High level conclusions

Fuzzer libgd/tests/fuzzing/fuzz_uhdr_decode.c is blocked:

The runtime code coverage of libgd/tests/fuzzing/fuzz_uhdr_decode.c covers 15.38% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzer gd_image_string_fuzzer is blocked:

The runtime code coverage of gd_image_string_fuzzer covers 27.39% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzers reach 7.847% of cyclomatic complexity.

Fuzzers reach 5.775% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

121 / 2095

Cyclomatic complexity statically reachable by fuzzers

578 / 7365

Runtime code coverage of functions

113 / 2095

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

Fuzzer: gd_image_string_fuzzer

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	154	74.7%
gold	[1:9]	0	0.0%
yellow	[10:29]	4	1.94%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	48	23.3%
All colors	206	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
73	84	gdImageSetPixel	call site: 00084	gdCompositePixel
29	165	gdAlphaBlend	call site: 00165	gdLayerOverlay
24	41	gdImageSetPixel	call site: 00041	gdImageSetPixel
15	66	gdImageSetPixel	call site: 00066	gdImageSetPixel
3	20	gdCalloc	call site: 00020
2	8	_gd_error_ex	call site: 00008	gd_error_ex
2	38	gdImageChar	call site: 00038	gdImageSetPixel
2	198	LLVMFuzzerTestOneInput	call site: 00198
2	202	gdImageDestroy	call site: 00202
1	16	gdImageCreateTrueColor	call site: 00016
1	36	gdImageString	call site: 00036	ASC

Runtime coverage analysis

Covered functions

21

Functions that are reachable but not covered

53

Reachable functions

73

Percentage of reachable functions covered

27.4%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
gd_image_string_fuzzer.cc	15
libgdgd.c	34
libgdgd_security.c	1
libgdgdhelpers.c	3
libgdgd_compositor.c	22
libgd/tests/vector2d/compositor.c	7

Fuzzer: libgd/tests/fuzzing/fuzz_jxl_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	62	72.0%
gold	[1:9]	3	3.48%
yellow	[10:29]	3	3.48%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	18	20.9%
All colors	86	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
18	20	_gd_error_ex	call site: 00020	overflow2
18	62	gdCalloc	call site: 00062	gdImageDestroy
12	41	gd_error_ex	call site: 00041	JxlImageFromRGBA
7	10	gdFree	call site: 00010	JxlReadCtxData
2	0	EP	call site: 00000	gdNewDynamicCtxEx
2	7	newDynamic	call site: 00007
2	82	gdImageDestroy	call site: 00082
1	59	gdImageCreateTrueColor	call site: 00059

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

7

Reachable functions

12

Percentage of reachable functions covered

41.67%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_jxl_decode.c	3
libgdgd_jxl.c	28
libgdgd_io_dp.c	4
libgdgdhelpers.c	4
libgdgd.c	9
libgdgd_security.c	1

Fuzzer: libgd/tests/fuzzing/fuzz_webp_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	56	70.0%
gold	[1:9]	3	3.75%
yellow	[10:29]	3	3.75%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	18	22.5%
All colors	80	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
26	48	gdCalloc	call site: 00048	WebpDecodeFirstImage
14	20	_gd_error_ex	call site: 00020	WebpDecodeFirstImage
7	10	gdFree	call site: 00010	WebpReadCtxData
2	0	EP	call site: 00000	gdNewDynamicCtxEx
2	7	newDynamic	call site: 00007
2	38	gd_error_ex	call site: 00038	gd_error_ex
2	76	gdImageDestroy	call site: 00076
1	45	gdImageCreateTrueColor	call site: 00045

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

5

Reachable functions

12

Percentage of reachable functions covered

58.33%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_webp_decode.c	3
libgdgd_webp.c	24
libgdgd_io_dp.c	4
libgdgdhelpers.c	4
libgdgd.c	9
libgdgd_security.c	1

Fuzzer: libgd/tests/fuzzing/fuzz_bmp_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	169	42.2%
gold	[1:9]	11	2.75%
yellow	[10:29]	3	0.75%
greenyellow	[30:49]	3	0.75%
lawngreen	50+	214	53.5%
All colors	400	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
73	186	gdImageSetPixel	call site: 00186	gdCompositePixel
29	267	gdAlphaBlend	call site: 00267	gdLayerOverlay
24	143	gdImageSetPixel	call site: 00143	gdImageSetPixel
15	168	gdImageSetPixel	call site: 00168	gdImageSetPixel
3	101	gdImageCreateTrueColor	call site: 00101
3	112	gdImageCreate	call site: 00112
2	7	newDynamic	call site: 00007
2	73	_gd_error_ex	call site: 00073	gd_error_ex
2	128	gdTell	call site: 00128
2	133	gdSeek	call site: 00133
2	140	bmp_read_1bit	call site: 00140	gdImageSetPixel
2	385	bmp_read_direct	call site: 00385

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

49

Reachable functions

96

Percentage of reachable functions covered

48.96%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_bmp_decode.c	3
libgdgd_bmp.c	41
libgdgd_io_dp.c	4
libgdgdhelpers.c	3
libgdgd_security.c	1
libgdgd.c	31
libgdgd_io.c	2
libgdgd_compositor.c	22
libgd/tests/vector2d/compositor.c	7

Fuzzer: parser_target.cc

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	4	36.3%
gold	[1:9]	2	18.1%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	5	45.4%
All colors	11	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
2	7	gdImageDestroy	call site: 00007
1	2	LLVMFuzzerTestOneInput	call site: 00002
1	4	gdFree	call site: 00004

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

2

Reachable functions

5

Percentage of reachable functions covered

60.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
parser_target.cc	3
libgdgd.c	1
libgdgdhelpers.c	1

Fuzzer: libgd/tests/fuzzing/fuzz_uhdr_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	41	91.1%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	4	8.88%
All colors	45	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
18	0	EP	call site: 00000	gdUhdrImageCreateFromPtr
18	26	gdFree	call site: 00026	gdUhdrSetError
3	19	gdCalloc	call site: 00019	gdUhdrSetError
2	23	gdMalloc	call site: 00023	gdUhdrSetError

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

22

Reachable functions

26

Percentage of reachable functions covered

15.38%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_uhdr_decode.c	3
libgdgd_uhdr.c	20
libgdgdhelpers.c	3

Fuzzer: libgd/tests/fuzzing/fuzz_tiff_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	284	86.5%
gold	[1:9]	3	0.91%
yellow	[10:29]	3	0.91%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	38	11.5%
All colors	328	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
82	232	gdAlphaBlend	call site: 00232	createFromTiffLines
73	151	gdImageSetPixel	call site: 00151	gdCompositePixel
24	108	gdImageSetPixel	call site: 00108	gdImageSetPixel
21	86	gdImageCreateTrueColor	call site: 00086	createFromTiffRgba
16	62	gdImageColorAllocate	call site: 00062	gdImageCreateTrueColor
15	33	gd_error_ex	call site: 00033	gdImageCreate
15	133	gdImageSetPixel	call site: 00133	gdImageSetPixel
13	17	_gd_error_ex	call site: 00017	TiffDecodeCurrentDirectory
8	319	gdImageDestroy	call site: 00319	gdImageDestroy
5	56	gdImageCreate	call site: 00056	readTiffColorMap
4	10	gdFree	call site: 00010	gdImageCreateFromTiffCtxEx
2	0	EP	call site: 00000	gdNewDynamicCtxEx

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

5

Reachable functions

12

Percentage of reachable functions covered

58.33%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_tiff_decode.c	3
libgdgd_tiff.c	42
libgdgd_io_dp.c	4
libgdgdhelpers.c	3
libgdgd.c	32
libgdgd_security.c	1
libgdgd_compositor.c	22
libgd/tests/vector2d/compositor.c	7

Fuzzer: libgd/tests/fuzzing/fuzz_jpeg_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	379	92.6%
gold	[1:9]	3	0.73%
yellow	[10:29]	3	0.73%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	24	5.86%
All colors	409	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
250	158	gdImageCreate	call site: 00158	gdImageScaleTwoPassWithMethod
47	104	gdImageCreateTrueColor	call site: 00104	gdImageScale
31	63	gdCalloc	call site: 00063	gdJpegCollectIccProfile
19	43	gdImageDestroy	call site: 00043	gdJpegCollectMetadata
9	20	_gd_error_ex	call site: 00020	gdJpegNormalizeReadOptions
7	31	gd_error	call site: 00031	gdImageDestroy
6	11	gdFree	call site: 00011	gdImageCreateFromJpegCtxWithOptionsAndMetadata
3	0	EP	call site: 00000	gdNewDynamicCtxEx
2	8	newDynamic	call site: 00008
2	40	gdImageDestroy	call site: 00040
1	96	overflow2	call site: 00096	gd_error_ex
1	102	gdImageCreateTrueColor	call site: 00102

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

5

Reachable functions

12

Percentage of reachable functions covered

58.33%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_jpeg_decode.c	3
libgdgd_jpeg.c	41
libgdgd_io_dp.c	4
libgdgdhelpers.c	3
libgdgd.c	17
libgdgd_metadata.c	9
libgdgd_security.c	1
libgdgd_interpolation.c	62

Fuzzer: libgd/tests/fuzzing/fuzz_gif_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	166	64.8%
gold	[1:9]	4	1.56%
yellow	[10:29]	8	3.12%
greenyellow	[30:49]	1	0.39%
lawngreen	50+	77	30.0%
All colors	256	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
73	135	gdImageSetPixel	call site: 00135	gdCompositePixel
29	216	gdAlphaBlend	call site: 00216	gdLayerOverlay
24	92	gdImageSetPixel	call site: 00092	gdImageSetPixel
15	117	gdImageSetPixel	call site: 00117	gdImageSetPixel
5	32	GetDataBlock_	call site: 00032	LM_to_uint
3	61	gdImageCreate	call site: 00061
2	7	newDynamic	call site: 00007
2	52	_gd_error_ex	call site: 00052	gd_error_ex
2	67	gdImageCreateFromGifCtx	call site: 00067
2	71	gdImageDestroy	call site: 00071
2	89	ReadImage	call site: 00089	gdImageSetPixel
1	0	EP	call site: 00000	gdImageCreateFromGifPtr

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

52

Reachable functions

80

Percentage of reachable functions covered

35.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_gif_decode.c	3
libgdgd_gif_in.c	23
libgdgd_io_dp.c	4
libgdgdhelpers.c	3
libgdgd.c	30
libgdgd_security.c	1
libgdgd_compositor.c	22
libgd/tests/vector2d/compositor.c	7

Fuzzer: libgd/tests/fuzzing/fuzz_png_decode.c

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	87	74.3%
gold	[1:9]	3	2.56%
yellow	[10:29]	3	2.56%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	24	20.5%
All colors	117	100

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
50	59	gdImageCreate	call site: 00059	gdImageDestroy
13	21	_gd_error_ex	call site: 00021	gdImageCreateTrueColor
8	10	gdFree	call site: 00010	gdImageCreateFromPngCtx
4	48	gdCalloc	call site: 00048	gdImageCreate
2	0	EP	call site: 00000	gdNewDynamicCtxEx
2	7	newDynamic	call site: 00007
2	38	gd_error_ex	call site: 00038	gd_error_ex
2	111	gdImageDestroy	call site: 00111
2	114	gdImageDestroy	call site: 00114	gdImageDestroy
1	45	gdImageCreateTrueColor	call site: 00045
1	57	gdImageCreate	call site: 00057

Runtime coverage analysis

Covered functions

114

Functions that are reachable but not covered

2

Reachable functions

6

Percentage of reachable functions covered

66.67%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
libgd/tests/fuzzing/fuzz_png_decode.c	3
libgdgd_png.c	38
libgdgd_io_dp.c	4
libgdgdhelpers.c	3
libgdgd.c	9
libgdgd_security.c	1

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name	Functions filename	Arg count	Args	Function depth	hitcount	instr count	bb count	cyclomatic complexity	Reachable functions	Incoming references	total cyclomatic complexity	Unreached complexity
render_tile	/src/libgd/examples/gradient_operators.c	2	['int', 'int']	16	0	28	3	2	330	0	984	883
assert_roundtrip	/src/libgd/tests/bmp/bmp_write_ex.c	6	['gdImagePtr', 'int', 'int', 'int', 'int', 'int']	11	0	9	2	1	196	0	926	488
dowheel	/src/libgd/src/fontwheeltest.c	9	['gdImagePtr', 'int', 'char*', 'int', 'double', 'int', 'int', 'int', 'char*']	13	0	16	2	2	135	0	523	427
gdUhdrImageWritePtr	/src/libgd/src/gd_uhdr.c	5	['gdUhdrImagePtr', 'int*', 'int', 'int', 'gdUhdrErrorPtr']	12	0	25	5	4	186	0	554	371
read_all_frames	/src/libgd/tests/gif/gif_conformance.c	1	['gif_case_t*']	10	0	33	3	5	108	1	347	155
gdImageCreateFromTiffCtxEx	/src/libgd/src/gd_tiff.c	2	['gdIOCtx*', 'int']	11	0	15	3	2	89	0	255	144
testDrawing	/src/libgd/src/testac.c	5	['gdImagePtr', 'double', 'int', 'int', 'char*']	11	0	13	2	1	130	0	530	118

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers

606 / 2095

Cyclomatic complexity statically reachable by fuzzers

3164 / 7365

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

gd_image_string_fuzzer.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdImageSetPixel', 'gdAlphaBlend', 'gdCalloc', '_gd_error_ex', 'gdImageChar', 'LLVMFuzzerTestOneInput', 'gdImageDestroy', 'gdImageCreateTrueColor']

libgd/tests/fuzzing/fuzz_jxl_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['_gd_error_ex', 'gdCalloc', 'gd_error_ex', 'gdFree', 'newDynamic', 'gdImageDestroy', 'gdImageCreateTrueColor']

libgd/tests/fuzzing/fuzz_webp_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdCalloc', '_gd_error_ex', 'gdFree', 'newDynamic', 'gd_error_ex', 'gdImageDestroy', 'gdImageCreateTrueColor']

libgd/tests/fuzzing/fuzz_bmp_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdImageSetPixel', 'gdAlphaBlend', 'gdImageCreateTrueColor', 'gdImageCreate', 'newDynamic', '_gd_error_ex', 'gdTell', 'gdSeek']

parser_target.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdImageDestroy', 'LLVMFuzzerTestOneInput', 'gdFree']

libgd/tests/fuzzing/fuzz_uhdr_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdFree', 'gdCalloc', 'gdMalloc']

libgd/tests/fuzzing/fuzz_tiff_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdAlphaBlend', 'gdImageSetPixel', 'gdImageCreateTrueColor', 'gdImageColorAllocate', 'gd_error_ex', '_gd_error_ex', 'gdImageDestroy', 'gdImageCreate']

libgd/tests/fuzzing/fuzz_jpeg_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdImageCreate', 'gdImageCreateTrueColor', 'gdCalloc', 'gdImageDestroy', '_gd_error_ex', 'gd_error', 'gdFree', 'newDynamic']

libgd/tests/fuzzing/fuzz_gif_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdImageSetPixel', 'gdAlphaBlend', 'GetDataBlock_', 'gdImageCreate', 'newDynamic', '_gd_error_ex', 'gdImageCreateFromGifCtx', 'gdImageDestroy']

libgd/tests/fuzzing/fuzz_png_decode.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['gdImageCreate', '_gd_error_ex', 'gdFree', 'gdCalloc', 'newDynamic', 'gd_error_ex', 'gdImageDestroy', 'gdImageCreateTrueColor']

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name	Function total lines	Lines covered at runtime	percentage covered	Reached by fuzzers
gdImageBrushApply	67	9	13.43%	['/src/libgd/tests/fuzzing/fuzz_bmp_decode.c', '/src/libgd/tests/fuzzing/fuzz_tiff_decode.c', '/src/libgd/tests/fuzzing/fuzz_jxl_decode.c', '/src/parser_target.cc', '/src/libgd/tests/fuzzing/fuzz_webp_decode.c', 'gd_image_string_fuzzer', '/src/libgd/tests/fuzzing/fuzz_png_decode.c', '/src/libgd/tests/fuzzing/fuzz_gif_decode.c', '/src/libgd/tests/fuzzing/fuzz_jpeg_decode.c', '/src/libgd/tests/fuzzing/fuzz_uhdr_decode.c']
gdImageTileApply	31	7	22.58%	['/src/libgd/tests/fuzzing/fuzz_bmp_decode.c', '/src/libgd/tests/fuzzing/fuzz_tiff_decode.c', '/src/libgd/tests/fuzzing/fuzz_jxl_decode.c', '/src/parser_target.cc', '/src/libgd/tests/fuzzing/fuzz_webp_decode.c', 'gd_image_string_fuzzer', '/src/libgd/tests/fuzzing/fuzz_png_decode.c', '/src/libgd/tests/fuzzing/fuzz_gif_decode.c', '/src/libgd/tests/fuzzing/fuzz_jpeg_decode.c', '/src/libgd/tests/fuzzing/fuzz_uhdr_decode.c']
dynamicSeek	31	14	45.16%	['/src/libgd/tests/fuzzing/fuzz_bmp_decode.c', '/src/libgd/tests/fuzzing/fuzz_tiff_decode.c', '/src/libgd/tests/fuzzing/fuzz_jxl_decode.c', '/src/parser_target.cc', '/src/libgd/tests/fuzzing/fuzz_webp_decode.c', '/src/libgd/tests/fuzzing/fuzz_png_decode.c', '/src/libgd/tests/fuzzing/fuzz_gif_decode.c', '/src/libgd/tests/fuzzing/fuzz_jpeg_decode.c', '/src/libgd/tests/fuzzing/fuzz_uhdr_decode.c']

New fuzzers

The below fuzzers are templates and suggestions for how to target the set of optimal functions above

gradient_operators.c

Target file: /src/libgd/examples/gradient_operators.c
Target functions: render_tile

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target render_tile */
  int new_var0 = ada_safe_get_int();
  int new_var1 = ada_safe_get_int();
  render_tile(new_var0, new_var1);

  af_safe_gb_cleanup();
}

bmp_write_ex.c

Target file: /src/libgd/tests/bmp/bmp_write_ex.c
Target functions: assert_roundtrip

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target assert_roundtrip */
  UNKNOWN_TYPE unknown_2;
  int new_var3 = ada_safe_get_int();
  int new_var4 = ada_safe_get_int();
  int new_var5 = ada_safe_get_int();
  int new_var6 = ada_safe_get_int();
  int new_var7 = ada_safe_get_int();
  assert_roundtrip(unknown_2, new_var3, new_var4, new_var5, new_var6, new_var7);

  af_safe_gb_cleanup();
}

fontwheeltest.c

Target file: /src/libgd/src/fontwheeltest.c
Target functions: dowheel

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target dowheel */
  UNKNOWN_TYPE unknown_8;
  int new_var9 = ada_safe_get_int();
  char *new_var10 = ada_safe_get_char_p();
  int new_var11 = ada_safe_get_int();
  UNKNOWN_TYPE unknown_12;
  int new_var13 = ada_safe_get_int();
  int new_var14 = ada_safe_get_int();
  int new_var15 = ada_safe_get_int();
  char *new_var16 = ada_safe_get_char_p();
  dowheel(unknown_8, new_var9, new_var10, new_var11, unknown_12, new_var13, new_var14, new_var15, new_var16);

  af_safe_gb_cleanup();
}

gd_uhdr.c

Target file: /src/libgd/src/gd_uhdr.c
Target functions: gdUhdrImageWritePtr

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target gdUhdrImageWritePtr */
  UNKNOWN_TYPE unknown_17;
  int *new_var18 = af_get_int_p();
  int new_var19 = ada_safe_get_int();
  int new_var20 = ada_safe_get_int();
  UNKNOWN_TYPE unknown_21;
  gdUhdrImageWritePtr(unknown_17, new_var18, new_var19, new_var20, unknown_21);

  af_safe_gb_cleanup();
}

gif_conformance.c

Target file: /src/libgd/tests/gif/gif_conformance.c
Target functions: read_all_frames

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target read_all_frames */
  UNKNOWN_TYPE unknown_22;
  read_all_frames(unknown_22);

  af_safe_gb_cleanup();
}

gd_tiff.c

Target file: /src/libgd/src/gd_tiff.c
Target functions: gdImageCreateFromTiffCtxEx

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target gdImageCreateFromTiffCtxEx */
  UNKNOWN_TYPE unknown_23;
  int new_var24 = ada_safe_get_int();
  gdImageCreateFromTiffCtxEx(unknown_23, new_var24);

  af_safe_gb_cleanup();
}

testac.c

Target file: /src/libgd/src/testac.c
Target functions: testDrawing

#include "ada_fuzz_header.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  af_safe_gb_init(data, size);

  /* target testDrawing */
  UNKNOWN_TYPE unknown_25;
  UNKNOWN_TYPE unknown_26;
  int new_var27 = ada_safe_get_int();
  int new_var28 = ada_safe_get_int();
  char *new_var29 = ada_safe_get_char_p();
  testDrawing(unknown_25, unknown_26, new_var27, new_var28, new_var29);

  af_safe_gb_cleanup();
}

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file	Reached by	Covered by
/src/libgd/src/gd_webp.c	['libgd/tests/fuzzing/fuzz_webp_decode.c']	['libgd/tests/fuzzing/fuzz_webp_decode.c']
/src/libgd/src/gd_gradient.c	[]	[]
/src/libgd/tests/vector2d/compositor.c	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c']	[]
/src/libgd/src/gd_jpeg.c	['libgd/tests/fuzzing/fuzz_jpeg_decode.c']	['libgd/tests/fuzzing/fuzz_jpeg_decode.c']
/src/libgd/tests/gif/gif_im2im.c	[]	[]
/src/libgd/tests/gdimagescale/options_content_aware.c	[]	[]
/src/libgd/examples/ctx_image_basic.c	[]	[]
/src/libgd/tests/metadata/jpeg_exiv2.cpp	[]	[]
/src/libgd/src/ftraster/gd_ft_raster.c	[]	[]
/src/libgd/tests/bmp/bmpsuite_read.c	[]	[]
/src/libgd/src/gd.h	[]	[]
/src/libgd/tests/gdimagepixelate/gdimagepixelate.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_png_decode.c	['libgd/tests/fuzzing/fuzz_png_decode.c']	['libgd/tests/fuzzing/fuzz_png_decode.c']
/src/libgd/tests/vector2d/gd_operators.c	[]	[]
/src/libgd/src/gd_nnquant.c	[]	[]
/src/libgd/src/ftraster/gd_ft_types.h	[]	[]
/src/libgd/tests/wbmp/wbmp_im2im.c	[]	[]
/src/libgd/tests/gdimageline/github_bug_167.c	[]	[]
/src/libgd/src/fontsizetest.c	[]	[]
/src/libgd/src/gd_surface.c	[]	[]
/src/libgd/tests/jpeg/bug00338.c	[]	[]
/src/libgd/tests/freetype/charmap_selection.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_uhdr_decode.c	['libgd/tests/fuzzing/fuzz_uhdr_decode.c']	['libgd/tests/fuzzing/fuzz_uhdr_decode.c']
/src/libgd/tests/vector2d/pattern_filter.c	[]	[]
/src/libgd/src/gd_draw_blend.c	[]	[]
/src/libgd/examples/ctx_image_blend_modes.c	[]	[]
/src/libgd/tests/gd2/gd2_im2im.c	[]	[]
/src/libgd/tests/bmp/bmp_size.c	[]	[]
/src/libgd/tests/uhdr/uhdr_cli_parity_quality_noop.c	[]	[]
/src/libgd/tests/gdinterpolatedscale/cache_locality.c	[]	[]
/src/libgd/tests/tga/tga_read.c	[]	[]
/src/libgd/src/gd_io.c	['libgd/tests/fuzzing/fuzz_bmp_decode.c']	['libgd/tests/fuzzing/fuzz_bmp_decode.c']
/src/libgd/tests/gdinterpolatedscale/alpha_weight.c	[]	[]
/src/libgd/src/gd_bmp.c	['libgd/tests/fuzzing/fuzz_bmp_decode.c']	['libgd/tests/fuzzing/fuzz_bmp_decode.c']
/src/libgd/src/gd_path_matrix.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_jpeg_decode.c	['libgd/tests/fuzzing/fuzz_jpeg_decode.c']	['libgd/tests/fuzzing/fuzz_jpeg_decode.c']
/src/libgd/tests/gif/animated_gif_reader.c	[]	[]
/src/libgd/tests/vector2d/path_ops.c	[]	[]
/src/libgd/examples/scale_entropy_visual_check.c	[]	[]
/src/libgd/examples/save_restore.c	[]	[]
/src/libgd/tests/gdimageaffine/matrix.c	[]	[]
/src/libgd/src/gd_filename.c	[]	[]
/src/libgd/tests/gdimagecolorreplace/gdimagecolorreplace.c	[]	[]
/src/libgd/src/gd_filter.c	[]	[]
/src/libgd/src/gd_path.c	[]	[]
/src/libgd/examples/ctx_image_advanced.c	[]	[]
/src/libgd/src/gd_uhdr.c	['libgd/tests/fuzzing/fuzz_uhdr_decode.c']	[]
/src/libgd/examples/vector2d_pattern_filter.c	[]	[]
/src/libgd/tests/readimage/readimage.c	[]	[]
/src/libgd/src/gd_rotate.c	[]	[]
/src/libgd/tests/gdimagetruecolortopalette/transparent_preserved.c	[]	[]
/src/libgd/src/gdfonts.c	[]	[]
/src/libgd/src/gd_jxl.c	['libgd/tests/fuzzing/fuzz_jxl_decode.c']	[]
/src/libgd/src/fontwheeltest.c	[]	[]
/src/libgd/tests/vector2d/text_curve.c	[]	[]
/src/libgd/examples/windows.c	[]	[]
/src/libgd/tests/tiff/tiff_invalid_read.c	[]	[]
/src/libgd/tests/gdtest/gdtest.h	[]	[]
/src/libgd/src/gd_color_match.c	[]	[]
/src/libgd/tests/bmp/bmp_write_ex.c	[]	[]
/src/libgd/tests/jxl/jxl_conformance.c	[]	[]
/src/libgd/tests/bmp/bmp_im2im.c	[]	[]
/src/libgd/tests/vector2d/image_context.c	[]	[]
/src/libgd/src/gd_topal.c	[]	[]
/src/libgd/src/gd_io_file.c	[]	[]
/src/libgd/src/ftraster/gd_ft_stroker.c	[]	[]
/src/libgd/src/gd_intern.h	[]	[]
/src/libgd/examples/tiger.c	[]	[]
/src/libgd/src/gd.c	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'parser_target.cc', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'parser_target.cc', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']
/src/libgd/examples/vector2d_example.h	[]	[]
/src/libgd/tests/jpeg/jpeg_write_options.c	[]	[]
/src/libgd/src/gd_draw.c	[]	[]
/src/libgd/tests/gdimageflip/gdimageflip.c	[]	[]
/src/libgd/src/gd_array.c	[]	[]
/src/libgd/src/gd_span_rle.h	[]	[]
/src/libgd/tests/jpeg/jpeg_read_options.c	[]	[]
/src/libgd/src/gdft.c	[]	[]
/src/libgd/tests/gdimagerectangle/point_ordering.c	[]	[]
/src/libgd/examples/uhdr.c	[]	[]
/src/libgd/tests/gif/bug000971.c	[]	[]
/src/libgd/tests/gdinterpolatedscale/linear_light.c	[]	[]
/src/libgd/tests/gdtest/gdpdiff.c	[]	[]
/src/libgd/src/gd_tiff.c	['libgd/tests/fuzzing/fuzz_tiff_decode.c']	['libgd/tests/fuzzing/fuzz_tiff_decode.c']
/src/libgd/src/gd_transform.c	[]	[]
/src/libgd/src/gdhelpers.c	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'parser_target.cc', 'libgd/tests/fuzzing/fuzz_uhdr_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'parser_target.cc', 'libgd/tests/fuzzing/fuzz_uhdr_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']
/src/libgd/tests/gdinterpolatedscale/gdTrivialResize.c	[]	[]
/src/libgd/examples/jxl_create_anim.c	[]	[]
/src/libgd/src/msinttypes/inttypes.h	[]	[]
/src/libgd/src/gd_compositor.c	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c']	[]
/src/libgd/tests/jxl/jxl_test_helpers.h	[]	[]
/src/libgd/tests/gdimageconvolution/basic.c	[]	[]
/src/libgd/tests/perceptualdiff/test_core.c	[]	[]
/src/libgd/tests/gdtest/readdir.c	[]	[]
/src/libgd/src/gd_path_dash.h	[]	[]
/src/libgd/src/gd_qoi.c	[]	[]
/src/libgd/examples/gradient_art.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_tiff_decode.c	['libgd/tests/fuzzing/fuzz_tiff_decode.c']	['libgd/tests/fuzzing/fuzz_tiff_decode.c']
/src/libgd/src/gd_gif_in.c	['libgd/tests/fuzzing/fuzz_gif_decode.c']	['libgd/tests/fuzzing/fuzz_gif_decode.c']
/src/libgd/src/gd_gif_out.c	[]	[]
/src/libgd/src/gdkanji.c	[]	[]
/src/libgd/src/msinttypes/stdint.h	[]	[]
/src/libgd/src/gd_png.c	['libgd/tests/fuzzing/fuzz_png_decode.c']	['libgd/tests/fuzzing/fuzz_png_decode.c']
/src/libgd/tests/uhdr/uhdr_roundtrip.c	[]	[]
/src/libgd/src/gdpp.cxx	[]	[]
/src/libgd/src/getopt.c	[]	[]
/src/libgd/tests/png/bug00193.c	[]	[]
/src/libgd/tests/jpeg/jpeg_conformance.c	[]	[]
/src/libgd/tests/vector2d/raster_parity.c	[]	[]
/src/libgd/src/gd_io_ss.c	[]	[]
/src/libgd/tests/bmp/bug00275.c	[]	[]
/src/libgd/tests/gd/gd_im2im.c	[]	[]
/src/libgd/src/gdfontmb.c	[]	[]
/src/libgd/src/gdtestft.c	[]	[]
/src/libgd/cmake/modules/TestForHighBitCharacters.c	[]	[]
/src/libgd/tests/vector2d/gradient.c	[]	[]
/src/libgd/src/gdcache.c	[]	[]
/src/libgd/src/gd_qoi.h	[]	[]
/src/libgd/src/gdfontt.c	[]	[]
/src/libgd/tests/gdimagerotate/gd223.c	[]	[]
/src/libgd/tests/vector2d/path_structure.c	[]	[]
/src/libgd/tests/gdimagefilter/gdCopyBlurred.c	[]	[]
/src/libgd/src/gd_tga.c	[]	[]
/src/libgd/tests/gdimagecrop/bug00485_auto.c	[]	[]
/src/libgd/tests/gdinterpolatedscale/gdBicubicFixed.c	[]	[]
/src/libgd/src/wbmp.c	[]	[]
/src/libgd/src/gd_version.c	[]	[]
/src/libgd/tests/uhdr/uhdr_metadata_resize.c	[]	[]
/src/libgd/examples/scale_bench.c	[]	[]
/src/libgd/tests/metadata/metadata_core.c	[]	[]
/src/libgd/tests/vector2d/matrix.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_gif_decode.c	['libgd/tests/fuzzing/fuzz_gif_decode.c']	['libgd/tests/fuzzing/fuzz_gif_decode.c']
/src/libgd/tests/uhdr/uhdr_cli_parity_noop.c	[]	[]
/src/libgd/src/gd_path_arc.c	[]	[]
/src/libgd/src/gdxpm.c	[]	[]
/src/libgd/src/gd_readimage.c	[]	[]
/src/libgd/tests/webp/webp_conformance.c	[]	[]
/src/libgd/tests/tiff/tiff_read_depth.c	[]	[]
/src/libgd/src/gd_wbmp.c	[]	[]
/src/libgd/src/gd_crop.c	[]	[]
/src/libgd/tests/gdimagescale/options_fit.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_webp_decode.c	['libgd/tests/fuzzing/fuzz_webp_decode.c']	['libgd/tests/fuzzing/fuzz_webp_decode.c']
/src/libgd/src/gd_path.h	[]	[]
/src/libgd/tests/gdinterpolatedscale/scale_flow.c	[]	[]
/src/libgd/src/testac.c	[]	[]
/src/libgd/src/gd_perceptual_diff.c	[]	[]
/src/libgd/tests/png/png_resolution.c	[]	[]
/src/libgd/examples/tiff_pages.c	[]	[]
/src/libgd/tests/gdimagecrop/autocrop_options.c	[]	[]
/src/libgd/tests/gdimagescale/bug00329.c	[]	[]
/src/libgd/examples/jxl_create_anim_vector.c	[]	[]
/src/libgd/src/gd_metadata.c	['libgd/tests/fuzzing/fuzz_jpeg_decode.c']	[]
/src/parser_target.cc	['parser_target.cc']	['parser_target.cc']
/src/libgd/src/gd_text.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_jxl_decode.c	['libgd/tests/fuzzing/fuzz_jxl_decode.c']	['libgd/tests/fuzzing/fuzz_jxl_decode.c']
/src/libgd/src/gd_interesting.c	[]	[]
/src/libgd/examples/gradient_operators.c	[]	[]
/src/libgd/src/ftraster/gd_ft_math.h	[]	[]
/src/libgd/tests/gdimageline/gdimageline_aa.c	[]	[]
/src/libgd/tests/jpeg/jpeg_im2im.c	[]	[]
/src/libgd/src/gd_matrix.c	[]	[]
/src/libgd/src/gdpp.h	[]	[]
/src/libgd/tests/metadata/png_metadata.c	[]	[]
/src/libgd/tests/png/png_im2im.c	[]	[]
/src/libgd/src/gd_path_stroke.c	[]	[]
/src/libgd/src/gd_io_stream.h	[]	[]
/src/libgd/src/gd_xbm.c	[]	[]
/src/libgd/tests/fuzzing/fuzz_bmp_decode.c	['libgd/tests/fuzzing/fuzz_bmp_decode.c']	['libgd/tests/fuzzing/fuzz_bmp_decode.c']
/src/libgd/tests/gdimagetruecolortopalette/neuquant_palette_order.c	[]	[]
/src/libgd/examples/crop.c	[]	[]
/src/libgd/src/gd_gd.c	[]	[]
/src/libgd/src/gd_security.c	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']	['gd_image_string_fuzzer', 'libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']
/src/libgd/tests/gdimageaffine/visual.c	[]	[]
/src/libgd/src/gd_gd2.c	[]	[]
/src/libgd/tests/gdimagebrightness/basic.c	[]	[]
/src/libgd/tests/gdimagecontrast/basic.c	[]	[]
/src/libgd/src/gd_color.c	[]	[]
/src/libgd/examples/text_curve.c	[]	[]
/src/libgd/tests/tiff/tiff_write.c	[]	[]
/src/libgd/src/gd_io_stream.cxx	[]	[]
/src/libgd/src/gdfontg.c	[]	[]
/src/libgd/tests/metadata/jpeg_metadata.c	[]	[]
/src/libgd/examples/gif_rewrite.c	[]	[]
/src/libgd/examples/flip.c	[]	[]
/src/libgd/examples/tiff_write_pages.c	[]	[]
/src/libgd/tests/gdimagefile/gdnametest.c	[]	[]
/src/libgd/tests/gdtest/gdtest.c	[]	[]
/src/libgd/src/gd_heif.c	[]	[]
/src/libgd/tests/gif/gif_conformance.c	[]	[]
/src/libgd/src/webpng.c	[]	[]
/src/libgd/src/gd_io_dp.c	['libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']	['libgd/tests/fuzzing/fuzz_jxl_decode.c', 'libgd/tests/fuzzing/fuzz_webp_decode.c', 'libgd/tests/fuzzing/fuzz_bmp_decode.c', 'libgd/tests/fuzzing/fuzz_tiff_decode.c', 'libgd/tests/fuzzing/fuzz_jpeg_decode.c', 'libgd/tests/fuzzing/fuzz_gif_decode.c', 'libgd/tests/fuzzing/fuzz_png_decode.c']
/src/libgd/src/gdfx.c	[]	[]
/src/libgd/src/gd_path_dash.c	[]	[]
/src/libgd/src/gd_fixed.h	[]	[]
/src/libgd/src/gd_color_map.c	[]	[]
/src/libgd/tests/qoi/qoi_conformance.c	[]	[]
/src/libgd/src/gd_interpolation.c	['libgd/tests/fuzzing/fuzz_jpeg_decode.c']	[]
/src/libgd/tests/uhdr/uhdr_ptr_roundtrip.c	[]	[]
/src/libgd/tests/vector2d/matrix_private.c	[]	[]
/src/libgd/src/ftraster/gd_ft_math.c	[]	[]
/src/libgd/tests/gdimagecopyresampled/bug00201.c	[]	[]
/src/libgd/tests/qoi/qoi_im2im.c	[]	[]
/src/libgd/tests/png/png_write_options.c	[]	[]
/src/libgd/tests/vector2d/text.c	[]	[]
/src/libgd/tests/tiff/tiff_dpi.c	[]	[]
/src/libgd/src/gd_span_rle.c	[]	[]
/src/libgd/tests/gdimagecopyrotated/bug00981_2.c	[]	[]
/src/libgd/tests/vector2d/state_save_restore.c	[]	[]
/src/libgd/src/ftraster/gd_ft_raster.h	[]	[]
/src/libgd/examples/composite_operators.c	[]	[]
/src/gd_image_string_fuzzer.cc	['gd_image_string_fuzzer']	['gd_image_string_fuzzer']
/src/libgd/tests/tiff/tiff_conformance.c	[]	[]
/src/libgd/src/gdtest.c	[]	[]
/src/libgd/tests/webp/webp_anim.c	[]	[]
/src/libgd/src/gd_ss.c	[]	[]
/src/libgd/src/gd_avif.c	[]	[]
/src/libgd/src/gdfontl.c	[]	[]
/src/libgd/src/gdhelpers.h	[]	[]
/src/libgd/tests/gdimagecopyrotated/bug00320.c	[]	[]

Directories in report

Directory
/src/libgd/src/
/src/libgd/tests/webp/
/src/libgd/tests/jxl/
/src/libgd/tests/gdimagetruecolortopalette/
/src/libgd/tests/gdimagerectangle/
/src/libgd/tests/gdimagefilter/
/src/libgd/tests/vector2d/
/src/libgd/examples/
/src/libgd/tests/gdimagecrop/
/src/libgd/tests/bmp/
/src/libgd/tests/gdimageconvolution/
/src/libgd/tests/gdimagecopyresampled/
/src/libgd/tests/png/
/src/libgd/tests/fuzzing/
/src/libgd/tests/gdimagecolorreplace/
/src/libgd/tests/uhdr/
/src/
/src/libgd/tests/gd2/
/src/libgd/tests/wbmp/
/src/libgd/tests/gdimagecontrast/
/src/libgd/tests/gd/
/src/libgd/tests/metadata/
/src/libgd/tests/gdimageaffine/
/src/libgd/tests/readimage/
/src/libgd/tests/gdinterpolatedscale/
/src/libgd/src/ftraster/
/src/libgd/tests/gdimagescale/
/src/libgd/tests/gdtest/
/src/libgd/tests/gdimagecopyrotated/
/src/libgd/tests/gif/
/src/libgd/tests/freetype/
/src/libgd/tests/qoi/
/src/libgd/tests/tiff/
/src/libgd/tests/gdimagerotate/
/src/libgd/cmake/modules/
/src/libgd/tests/jpeg/
/src/libgd/tests/tga/
/src/libgd/tests/gdimagebrightness/
/src/libgd/tests/gdimageline/
/src/libgd/tests/gdimagefile/
/src/libgd/src/msinttypes/
/src/libgd/tests/gdimagepixelate/
/src/libgd/tests/perceptualdiff/
/src/libgd/tests/gdimageflip/

This section shows a list of 3rd party function calls and their relative coverage information. By static analysis of the target project code, all of the 3rd party function call and their caller information, including the source file and line number that initiate the call are captured. The caller source code file and line number are shown in column 2 while column 1 is the function name of the 3rd party function call. Each occurrent of the 3rd party function call will occuply a separate row. Column 3 of each row indicate if the 3rd party call in the source file line is unreachable. Column 4 lists all fuzzers that have covered that particular system call in that specific location (source file and line)during their dynamic fuzzing.

Function in each files in report

Target sink	Callsite location	Reached by fuzzer	Covered by Fuzzers

This section contains multiple tables, each table contains a list of sink functions/methods found in the project for one of the CWE supported by the sink analyser, together with information like which fuzzers statically reach the sink functions/methods and possible call path to that sink functions/methods if it is not statically reached by any fuzzers. Column 1 is the function/method name of the sink functions/methods found in the project. Column 2 lists all fuzzers (or no fuzzers at all) that have covered that particular function method statically. Column 3 shows a list of possible call paths to reach the specific function/method call if none of the fuzzers cover the target function/method calls. Lastly, column 4 shows possible fuzzer blockers that prevent an existing fuzzer from reaching the target sink functions/methods dynamically.

Sink functions/methods found for CWE22

Target sink	Reached by fuzzer	Function call path	Possible branch blockers
readdir	[]	Path 1	N/A
opendir	[]	Path 1	N/A