Fuzz introspector: CharUtilsFuzzer
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
23 16 [org.apache.commons.lang3.CharSequenceUtils].subSequence(java.lang.CharSequence,int) call site: {node_id}
16 160 [CharUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) call site: {node_id}
15 43 [org.apache.commons.lang3.CharSequenceUtils].subSequence(java.lang.CharSequence,int) call site: {node_id}
15 69 [org.apache.commons.lang3.CharSequenceUtils].toCharArray(java.lang.CharSequence) call site: {node_id}
10 139 [CharUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) call site: {node_id}
5 130 [CharUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) call site: {node_id}
3 2 [CharUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) call site: {node_id}
3 153 [CharUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) call site: {node_id}
2 87 [org.apache.commons.lang3.CharSetUtils].deepEmpty(java.lang.String[]) call site: {node_id}
2 117 [org.apache.commons.lang3.CharSet]. (java.lang.String[]) call site: {node_id}
2 120 [org.apache.commons.lang3.CharSet]. (java.lang.String[]) call site: {node_id}
2 123 [org.apache.commons.lang3.CharSet].contains(char) call site: {node_id}

Fuzzer calltree

0 [CharUtilsFuzzer].fuzzerTestOneInput(com.code_intelligence.jazzer.api.FuzzedDataProvider) [function] [call site] 00000
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeInt(int,int) [function] [call site] 00001
1 [java.lang.Integer].valueOf(int) [function] [call site] 00002
2 [java.lang.Integer].<init>(int) [function] [call site] 00003
3 [java.lang.Number].<init>() [function] [call site] 00004
4 [java.lang.Object].<init>() [function] [call site] 00005
1 [java.lang.Integer].intValue() [function] [call site] 00006
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00007
1 [org.apache.commons.lang3.CharSequenceUtils].subSequence(java.lang.CharSequence,int) [function] [call site] 00008
2 [java.nio.CharBuffer].length() [function] [call site] 00009
2 [java.lang.String].length() [function] [call site] 00010
3 [java.lang.String].coder() [function] [call site] 00011
2 [java.lang.StringBuilder].length() [function] [call site] 00012
2 [java.lang.AbstractStringBuilder].length() [function] [call site] 00013
2 [org.apache.commons.lang3.text.StrBuilder].length() [function] [call site] 00014
2 [java.lang.StringBuffer].length() [function] [call site] 00015
2 [org.apache.commons.lang3.text.StrBuilder].subSequence(int,int) [function] [call site] 00016
3 [java.lang.StringIndexOutOfBoundsException].<init>(int) [function] [call site] 00017
3 [java.lang.StringIndexOutOfBoundsException].<init>(int) [function] [call site] 00018
3 [java.lang.StringIndexOutOfBoundsException].<init>(int) [function] [call site] 00019
3 [org.apache.commons.lang3.text.StrBuilder].substring(int,int) [function] [call site] 00020
4 [org.apache.commons.lang3.text.StrBuilder].validateRange(int,int) [function] [call site] 00021
5 [java.lang.StringIndexOutOfBoundsException].<init>(int) [function] [call site] 00022
5 [java.lang.StringIndexOutOfBoundsException].<init>(java.lang.String) [function] [call site] 00023
4 [java.lang.String].<init>(char[],int,int) [function] [call site] 00024
5 [java.lang.String].<init>(char[],int,int,java.lang.Void) [function] [call site] 00025
6 [java.lang.Object].<init>() [function] [call site] 00026
6 [java.lang.StringUTF16].compress(char[],int,int) [function] [call site] 00027
6 [java.lang.StringUTF16].toBytes(char[],int,int) [function] [call site] 00028
5 [java.lang.String].rangeCheck(char[],int,int) [function] [call site] 00029
6 [java.lang.String].checkBoundsOffCount(int,int,int) [function] [call site] 00030
7 [java.lang.StringIndexOutOfBoundsException].<init>(java.lang.String) [function] [call site] 00031
7 [java.lang.StringBuilder].<init>() [function] [call site] 00032
7 [java.lang.StringBuilder].append(int) [function] [call site] 00033
7 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00034
7 [java.lang.StringBuilder].append(int) [function] [call site] 00035
7 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00036
7 [java.lang.StringBuilder].append(int) [function] [call site] 00037
7 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00038
7 [java.lang.StringBuilder].toString() [function] [call site] 00039
2 [java.lang.StringBuffer].subSequence(int,int) [function] [call site] 00040
3 [java.lang.AbstractStringBuilder].substring(int,int) [function] [call site] 00041
2 [java.lang.StringBuilder].subSequence(int,int) [function] [call site] 00042
2 [java.lang.String].subSequence(int,int) [function] [call site] 00043
3 [java.lang.String].substring(int,int) [function] [call site] 00044
4 [java.lang.String].length() [function] [call site] 00045
4 [java.lang.String].checkBoundsBeginEnd(int,int,int) [function] [call site] 00046
5 [java.lang.StringIndexOutOfBoundsException].<init>(java.lang.String) [function] [call site] 00047
5 [java.lang.StringBuilder].<init>() [function] [call site] 00048
5 [java.lang.StringBuilder].append(int) [function] [call site] 00049
5 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00050
5 [java.lang.StringBuilder].append(int) [function] [call site] 00051
5 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00052
5 [java.lang.StringBuilder].append(int) [function] [call site] 00053
5 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00054
5 [java.lang.StringBuilder].toString() [function] [call site] 00055
4 [java.lang.String].isLatin1() [function] [call site] 00056
4 [java.lang.StringLatin1].newString(byte[],int,int) [function] [call site] 00057
4 [java.lang.StringUTF16].newString(byte[],int,int) [function] [call site] 00058
2 [java.lang.AbstractStringBuilder].subSequence(int,int) [function] [call site] 00059
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00060
1 [org.apache.commons.lang3.CharSequenceUtils].toCharArray(java.lang.CharSequence) [function] [call site] 00061
2 [org.apache.commons.lang3.StringUtils].length(java.lang.CharSequence) [function] [call site] 00062
3 [java.nio.CharBuffer].length() [function] [call site] 00063
3 [java.lang.String].length() [function] [call site] 00064
3 [java.lang.StringBuilder].length() [function] [call site] 00065
3 [java.lang.AbstractStringBuilder].length() [function] [call site] 00066
3 [org.apache.commons.lang3.text.StrBuilder].length() [function] [call site] 00067
3 [java.lang.StringBuffer].length() [function] [call site] 00068
2 [java.lang.String].toCharArray() [function] [call site] 00069
3 [java.lang.String].isLatin1() [function] [call site] 00070
3 [java.lang.StringLatin1].toChars(byte[]) [function] [call site] 00071
3 [java.lang.StringUTF16].toChars(byte[]) [function] [call site] 00072
2 [java.lang.StringBuffer].charAt(int) [function] [call site] 00073
3 [java.lang.AbstractStringBuilder].charAt(int) [function] [call site] 00074
2 [java.lang.StringBuilder].charAt(int) [function] [call site] 00075
2 [java.lang.String].charAt(int) [function] [call site] 00076
3 [java.lang.String].isLatin1() [function] [call site] 00077
3 [java.lang.StringLatin1].charAt(byte[],int) [function] [call site] 00078
3 [java.lang.StringUTF16].charAt(byte[],int) [function] [call site] 00079
2 [java.nio.CharBuffer].charAt(int) [function] [call site] 00080
2 [org.apache.commons.lang3.text.StrBuilder].charAt(int) [function] [call site] 00081
3 [org.apache.commons.lang3.text.StrBuilder].length() [function] [call site] 00082
3 [java.lang.StringIndexOutOfBoundsException].<init>(int) [function] [call site] 00083
2 [java.lang.AbstractStringBuilder].charAt(int) [function] [call site] 00084
1 [org.apache.commons.lang3.CharSetUtils].containsAny(java.lang.String,java.lang.String[]) [function] [call site] 00085
2 [org.apache.commons.lang3.CharSetUtils].deepEmpty(java.lang.String[]) [function] [call site] 00086
3 [org.apache.commons.lang3.CharSetUtils$isEmpty__2].bootstrap$() [function] [call site] 00087
4 [org.apache.commons.lang3.CharSetUtils$isEmpty__2].<init>() [function] [call site] 00088
5 [java.lang.Object].<init>() [function] [call site] 00089
3 [org.apache.commons.lang3.stream.Streams].of(java.lang.Object[]) [function] [call site] 00090
4 [java.util.stream.Stream].empty() [function] [call site] 00091
4 [java.util.stream.Stream].of(java.lang.Object[]) [function] [call site] 00092
2 [org.apache.commons.lang3.StringUtils].isEmpty(java.lang.CharSequence) [function] [call site] 00093
3 [java.nio.CharBuffer].length() [function] [call site] 00094
3 [java.lang.String].length() [function] [call site] 00095
3 [java.lang.StringBuilder].length() [function] [call site] 00096
3 [java.lang.AbstractStringBuilder].length() [function] [call site] 00097
3 [org.apache.commons.lang3.text.StrBuilder].length() [function] [call site] 00098
3 [java.lang.StringBuffer].length() [function] [call site] 00099
2 [org.apache.commons.lang3.CharSet].getInstance(java.lang.String[]) [function] [call site] 00100
3 [java.util.jar.Attributes].get(java.lang.Object) [function] [call site] 00101
3 [java.security.Provider].get(java.lang.Object) [function] [call site] 00102
3 [java.util.Hashtable].get(java.lang.Object) [function] [call site] 00103
3 [java.util.LinkedHashMap].get(java.lang.Object) [function] [call site] 00104
3 [java.util.TreeMap].get(java.lang.Object) [function] [call site] 00105
3 [java.util.concurrent.ConcurrentHashMap].get(java.lang.Object) [function] [call site] 00106
3 [java.util.WeakHashMap].get(java.lang.Object) [function] [call site] 00107
3 [java.util.HashMap].get(java.lang.Object) [function] [call site] 00108
3 [java.util.IdentityHashMap].get(java.lang.Object) [function] [call site] 00109
3 [java.util.Properties].get(java.lang.Object) [function] [call site] 00110
3 [java.util.EnumMap].get(java.lang.Object) [function] [call site] 00111
3 [java.util.AbstractMap].get(java.lang.Object) [function] [call site] 00112
3 [org.apache.commons.lang3.CharSet].<init>(java.lang.String[]) [function] [call site] 00113
4 [java.util.HashSet].<init>() [function] [call site] 00114
4 [java.util.Collections].synchronizedSet(java.util.Set) [function] [call site] 00115
4 [java.lang.Object].<init>() [function] [call site] 00116
4 [org.apache.commons.lang3.CharSet$add__4].bootstrap$(org.apache.commons.lang3.CharSet) [function] [call site] 00117
5 [org.apache.commons.lang3.CharSet$add__4].<init>(org.apache.commons.lang3.CharSet) [function] [call site] 00118
6 [java.lang.Object].<init>() [function] [call site] 00119
4 [java.util.stream.Stream].of(java.lang.Object[]) [function] [call site] 00120
2 [java.lang.String].toCharArray() [function] [call site] 00121
2 [org.apache.commons.lang3.CharSet].contains(char) [function] [call site] 00122
3 [org.apache.commons.lang3.CharSet$lambda_contains_0__3].bootstrap$(char) [function] [call site] 00123
4 [org.apache.commons.lang3.CharSet$lambda_contains_0__3].<init>(char) [function] [call site] 00124
5 [java.lang.Object].<init>() [function] [call site] 00125
3 [java.util.Collection].stream() [function] [call site] 00126
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00127
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeString(int) [function] [call site] 00128
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].remainingBytes() [function] [call site] 00129
1 [org.apache.commons.lang3.CharSetUtils].count(java.lang.String,java.lang.String[]) [function] [call site] 00130
2 [org.apache.commons.lang3.CharSetUtils].deepEmpty(java.lang.String[]) [function] [call site] 00131
2 [org.apache.commons.lang3.StringUtils].isEmpty(java.lang.CharSequence) [function] [call site] 00132
2 [org.apache.commons.lang3.CharSet].getInstance(java.lang.String[]) [function] [call site] 00133
2 [java.lang.String].toCharArray() [function] [call site] 00134
2 [org.apache.commons.lang3.CharSet].contains(char) [function] [call site] 00135
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00136
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeString(int) [function] [call site] 00137
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].remainingBytes() [function] [call site] 00138
1 [org.apache.commons.lang3.CharSetUtils].delete(java.lang.String,java.lang.String[]) [function] [call site] 00139
2 [org.apache.commons.lang3.CharSetUtils].deepEmpty(java.lang.String[]) [function] [call site] 00140
2 [org.apache.commons.lang3.StringUtils].isEmpty(java.lang.CharSequence) [function] [call site] 00141
2 [org.apache.commons.lang3.CharSetUtils].modify(java.lang.String,java.lang.String[],boolean) [function] [call site] 00142
3 [org.apache.commons.lang3.CharSet].getInstance(java.lang.String[]) [function] [call site] 00143
3 [java.lang.StringBuilder].<init>(int) [function] [call site] 00144
3 [java.lang.String].length() [function] [call site] 00145
3 [java.lang.String].toCharArray() [function] [call site] 00146
3 [org.apache.commons.lang3.CharSet].contains(char) [function] [call site] 00147
3 [java.lang.StringBuilder].append(char) [function] [call site] 00148
3 [java.lang.StringBuilder].toString() [function] [call site] 00149
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00150
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeString(int) [function] [call site] 00151
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].remainingBytes() [function] [call site] 00152
1 [org.apache.commons.lang3.CharSetUtils].keep(java.lang.String,java.lang.String[]) [function] [call site] 00153
2 [org.apache.commons.lang3.CharSetUtils].deepEmpty(java.lang.String[]) [function] [call site] 00154
2 [java.lang.String].isEmpty() [function] [call site] 00155
2 [org.apache.commons.lang3.CharSetUtils].modify(java.lang.String,java.lang.String[],boolean) [function] [call site] 00156
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00157
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeString(int) [function] [call site] 00158
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].remainingBytes() [function] [call site] 00159
1 [org.apache.commons.lang3.CharSetUtils].squeeze(java.lang.String,java.lang.String[]) [function] [call site] 00160
2 [org.apache.commons.lang3.CharSetUtils].deepEmpty(java.lang.String[]) [function] [call site] 00161
2 [org.apache.commons.lang3.StringUtils].isEmpty(java.lang.CharSequence) [function] [call site] 00162
2 [org.apache.commons.lang3.CharSet].getInstance(java.lang.String[]) [function] [call site] 00163
2 [java.lang.StringBuilder].<init>(int) [function] [call site] 00164
2 [java.lang.String].length() [function] [call site] 00165
2 [java.lang.String].toCharArray() [function] [call site] 00166
2 [java.lang.StringBuilder].append(char) [function] [call site] 00167
2 [java.lang.Character].charValue() [function] [call site] 00168
2 [java.lang.Character].charValue() [function] [call site] 00169
2 [org.apache.commons.lang3.CharSet].contains(char) [function] [call site] 00170
2 [java.lang.Character].valueOf(char) [function] [call site] 00171
3 [java.lang.Character].<init>(char) [function] [call site] 00172
4 [java.lang.Object].<init>() [function] [call site] 00173
2 [java.lang.Character].valueOf(char) [function] [call site] 00174
2 [java.lang.StringBuilder].append(char) [function] [call site] 00175
2 [java.lang.StringBuilder].toString() [function] [call site] 00176
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00177
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeString(int) [function] [call site] 00178
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].remainingBytes() [function] [call site] 00179
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeChar() [function] [call site] 00180
1 [org.apache.commons.lang3.CharUtils].isAsciiAlphanumeric(char) [function] [call site] 00181
2 [org.apache.commons.lang3.CharUtils].isAsciiAlpha(char) [function] [call site] 00182
3 [org.apache.commons.lang3.CharUtils].isAsciiAlphaLower(char) [function] [call site] 00183
3 [org.apache.commons.lang3.CharUtils].isAsciiAlphaUpper(char) [function] [call site] 00184
2 [org.apache.commons.lang3.CharUtils].isAsciiNumeric(char) [function] [call site] 00185
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeRemainingAsString() [function] [call site] 00186
1 [org.apache.commons.lang3.CharUtils].toCharacterObject(java.lang.String) [function] [call site] 00187
2 [java.lang.String].charAt(int) [function] [call site] 00188
2 [org.apache.commons.lang3.StringUtils].isEmpty(java.lang.CharSequence) [function] [call site] 00189
2 [java.lang.Character].valueOf(char) [function] [call site] 00190
1 [com.code_intelligence.jazzer.api.FuzzedDataProvider].consumeChar() [function] [call site] 00191
1 [org.apache.commons.lang3.CharUtils].unicodeEscaped(char) [function] [call site] 00192
2 [java.lang.StringBuilder].<init>() [function] [call site] 00193
2 [java.lang.StringBuilder].append(char) [function] [call site] 00194
2 [java.lang.StringBuilder].append(char) [function] [call site] 00195
2 [java.lang.StringBuilder].append(char) [function] [call site] 00196
2 [java.lang.StringBuilder].append(char) [function] [call site] 00197
2 [java.lang.StringBuilder].append(java.lang.String) [function] [call site] 00198
2 [java.lang.StringBuilder].toString() [function] [call site] 00199