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[clang][analyzer] Fix a nullptr dereference when -ftime-trace is used #139820

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Merged
merged 3 commits into from
May 14, 2025
Merged

[clang][analyzer] Fix a nullptr dereference when -ftime-trace is used #139820

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89f1cd7
[clang][analyzer] Fix a nullptr dereference when `-ftime-trace` is used
fangyi-zhou May 14, 2025
f872c3c
minor style fix
fangyi-zhou May 14, 2025
8b02b3d
use clang_analyze_cc1 in test
fangyi-zhou May 14, 2025
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2 changes: 2 additions & 0 deletions clang/include/clang/StaticAnalyzer/Core/PathSensitive/SymbolManager.h
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Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,8 @@ class SymbolConjured : public SymbolData {
const Stmt *getStmt() const {
switch (Elem->getKind()) {
case CFGElement::Initializer:
if (Elem->castAs<CFGInitializer>().getInitializer() == nullptr)
return nullptr;
return Elem->castAs<CFGInitializer>().getInitializer()->getInit();
case CFGElement::ScopeBegin:
return Elem->castAs<CFGScopeBegin>().getTriggerStmt();
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5 changes: 5 additions & 0 deletions clang/test/Analysis/ftime-trace-no-init.cpp
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@@ -0,0 +1,5 @@
// RUN: %clang --analyze %s -ftime-trace -Xclang -verify
// expected-no-diagnostics

// GitHub issue 139779
struct {} a; // no-crash