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Fix #14438 fuzzing crash (null-pointer-use) in singleAssignInScope() #8201

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Fix #14438 fuzzing crash (null-pointer-use) in singleAssignInScope() #8201

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19ffa9f
Update tokenize.cpp
chrchr-github Feb 12, 2026
b2a96d4
Create crash-c540e04fe675639b7ead821efc2f5c037b6c89e0
chrchr-github Feb 12, 2026
126481e
Update testgarbage.cpp
chrchr-github Feb 12, 2026
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4 changes: 2 additions & 2 deletions lib/tokenize.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9018,8 +9018,8 @@ void Tokenizer::findGarbageCode() const
syntaxError(tok);
if (Token::Match(tok, "? %assign%"))
syntaxError(tok);
if (Token::Match(tok, "!|~ %comp%") &&
!(cpp && tok->strAt(1) == ">" && Token::simpleMatch(tok->tokAt(-1), "operator")))
if (Token::Match(tok, "[!~+-/] %comp%") &&
!(cpp && Token::Match(tok->next(), "[<>]") && Token::simpleMatch(tok->tokAt(-1), "operator")))
syntaxError(tok);
if (Token::Match(tok, "%comp% {") && (!cpp || tok->str() != ">"))
syntaxError(tok);
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1 change: 1 addition & 0 deletions test/cli/fuzz-crash/crash-c540e04fe675639b7ead821efc2f5c037b6c89e0
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@@ -0,0 +1 @@
o o(){i n;for(i x:v)n=n+<1;}
2 changes: 1 addition & 1 deletion test/testgarbage.cpp
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Expand Up @@ -848,7 +848,7 @@ class TestGarbage : public TestFixture {
}

void garbageCode95() { // #6804
ASSERT_THROW_INTERNAL(checkCode("{ } x x ; { } h h [ ] ( ) ( ) { struct x ( x ) ; int __attribute__ ( ) f ( ) { h - > first = & x ; struct x * n = h - > first ; ( ) n > } }"), AST); // do not crash
ASSERT_THROW_INTERNAL(checkCode("{ } x x ; { } h h [ ] ( ) ( ) { struct x ( x ) ; int __attribute__ ( ) f ( ) { h - > first = & x ; struct x * n = h - > first ; ( ) n > } }"), SYNTAX); // do not crash
}

void garbageCode96() { // #6807
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