Fuzz introspector: Base64Fuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
27 7 [org.apache.commons.net.util.Base64].newStringUtf8(byte[]) call site: {node_id}
9 40 [org.apache.commons.net.util.Base64].encode(byte[]) call site: {node_id}
3 1 [Base64Fuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) call site: {node_id}
1 5 [org.apache.commons.net.util.Base64].containsBase64Byte(byte[]) call site: {node_id}
1 53 [org.apache.commons.net.util.Base64].encodeBase64(byte[]) call site: {node_id}

Fuzzer calltree

0 [Base64Fuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) [function] [call site] 00000
1 [org.apache.commons.net.util.Base64].<init>(int,byte[],boolean) [function] [call site] 00001
2 [java.lang.Object].<init>() [function] [call site] 00002
2 [java.lang.System].arraycopy(java.lang.Object,int,java.lang.Object,int,int) [function] [call site] 00003
2 [org.apache.commons.net.util.Base64].containsBase64Byte(byte[]) [function] [call site] 00004
3 [org.apache.commons.net.util.Base64].isBase64(byte) [function] [call site] 00005
2 [org.apache.commons.net.util.Base64].newStringUtf8(byte[]) [function] [call site] 00006
3 [java.lang.String].<init>(byte[],java.nio.charset.Charset) [function] [call site] 00007
4 [java.lang.String].<init>(byte[],int,int,java.nio.charset.Charset) [function] [call site] 00008
5 [java.lang.Object].<init>() [function] [call site] 00009
5 [java.lang.NullPointerException].<init>(java.lang.String) [function] [call site] 00010
6 [java.lang.RuntimeException].<init>(java.lang.String) [function] [call site] 00011
7 [java.lang.Exception].<init>(java.lang.String) [function] [call site] 00012
8 [java.lang.Throwable].<init>(java.lang.String) [function] [call site] 00013
9 [java.lang.Object].<init>() [function] [call site] 00014
9 [java.lang.Throwable].fillInStackTrace() [function] [call site] 00015
10 [java.lang.Throwable].fillInStackTrace(int) [function] [call site] 00016
9 [sun.nio.fs.UnixException].fillInStackTrace() [function] [call site] 00017
5 [java.lang.String].checkBoundsOffCount(int,int,int) [function] [call site] 00018
6 [java.lang.StringIndexOutOfBoundsException].<init>(java.lang.String) [function] [call site] 00019
6 [java.lang.StringBuilder].<init>() [function] [call site] 00020
6 [java.lang.StringBuilder].append(int) [function] [call site] 00021
6 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00022
6 [java.lang.StringBuilder].append(int) [function] [call site] 00023
6 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00024
6 [java.lang.StringBuilder].append(int) [function] [call site] 00025
6 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00026
6 [java.lang.StringBuilder].toString() [function] [call site] 00027
5 [java.lang.StringCoding].decode(java.nio.charset.Charset,byte[],int,int) [function] [call site] 00028
2 [java.lang.IllegalArgumentException].<init>(java.lang.String) [function] [call site] 00029
2 [java.lang.StringBuilder].<init>() [function] [call site] 00030
2 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00031
2 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00032
2 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00033
2 [java.lang.StringBuilder].toString() [function] [call site] 00034
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeBoolean() [function] [call site] 00035
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeBytes(int) [function] [call site] 00036
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeInt() [function] [call site] 00037
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeBytes(int) [function] [call site] 00038
1 [org.apache.commons.net.util.Base64].encode(byte[]) [function] [call site] 00039
2 [org.apache.commons.net.util.Base64].encode(byte[],int,byte[],boolean) [function] [call site] 00040
3 [org.apache.commons.net.util.Base64].isEmpty(byte[]) [function] [call site] 00041
3 [org.apache.commons.net.util.Base64].encodeBase64Chunked(byte[],int,byte[]) [function] [call site] 00042
4 [org.apache.commons.net.util.Base64].getEncodeLength(byte[],int,byte[]) [function] [call site] 00043
4 [java.lang.Math].toIntExact(long) [function] [call site] 00044
4 [java.util.Base64$Encoder].encode(byte[],byte[]) [function] [call site] 00045
4 [org.apache.commons.net.util.Base64].getMimeEncoder(int,byte[]) [function] [call site] 00046
5 [java.util.Base64].getMimeEncoder(int,byte[]) [function] [call site] 00047
4 [java.lang.System].arraycopy(java.lang.Object,int,java.lang.Object,int,int) [function] [call site] 00048
3 [org.apache.commons.net.util.Base64].encodeBase64(byte[]) [function] [call site] 00049
4 [java.util.Base64$Encoder].encode(byte[]) [function] [call site] 00050
4 [org.apache.commons.net.util.Base64].getEncoder() [function] [call site] 00051
5 [java.util.Base64].getEncoder() [function] [call site] 00052
4 [org.apache.commons.net.util.Base64].isEmpty(byte[]) [function] [call site] 00053
3 [org.apache.commons.net.util.Base64].encodeBase64URLSafe(byte[]) [function] [call site] 00054
4 [java.util.Base64$Encoder].encode(byte[]) [function] [call site] 00055
4 [org.apache.commons.net.util.Base64].getUrlEncoder() [function] [call site] 00056
5 [java.util.Base64].getUrlEncoder() [function] [call site] 00057
4 [java.util.Base64$Encoder].withoutPadding() [function] [call site] 00058
2 [org.apache.commons.net.util.Base64].isUrlSafe() [function] [call site] 00059
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeBytes(int) [function] [call site] 00060
1 [org.apache.commons.net.util.Base64].decode(byte[]) [function] [call site] 00061
2 [java.util.Base64$Decoder].decode(byte[]) [function] [call site] 00062
2 [org.apache.commons.net.util.Base64].getDecoder() [function] [call site] 00063
3 [java.util.Base64].getDecoder() [function] [call site] 00064
2 [org.apache.commons.net.util.Base64].isEmpty(byte[]) [function] [call site] 00065