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[clang][analysis] Fix flaky clang/test/Analysis/live-stmts.cpp test (2nd attempt) (#127406) #139591

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Merged
merged 1 commit into from
May 13, 2025
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[clang][analysis] Fix flaky clang/test/Analysis/live-stmts.cpp test (2nd attempt) (#127406) #139591

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11 changes: 9 additions & 2 deletions clang/lib/Analysis/LiveVariables.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -662,12 +662,19 @@ void LiveVariables::dumpExprLiveness(const SourceManager &M) {
}

void LiveVariablesImpl::dumpExprLiveness(const SourceManager &M) {
const ASTContext &Ctx = analysisContext.getASTContext();
auto ByIDs = [&Ctx](const Expr *L, const Expr *R) {
return L->getID(Ctx) < R->getID(Ctx);
};

// Don't iterate over blockEndsToLiveness directly because it's not sorted.
for (const CFGBlock *B : *analysisContext.getCFG()) {

llvm::errs() << "\n[ B" << B->getBlockID()
<< " (live expressions at block exit) ]\n";
for (const Expr *E : blocksEndToLiveness[B].liveExprs) {
std::vector<const Expr *> LiveExprs;
llvm::append_range(LiveExprs, blocksEndToLiveness[B].liveExprs);
llvm::sort(LiveExprs, ByIDs);
for (const Expr *E : LiveExprs) {
llvm::errs() << "\n";
E->dump();
}
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2 changes: 2 additions & 0 deletions clang/test/Analysis/live-stmts.cpp
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Expand Up @@ -44,6 +44,8 @@ int testThatDumperWorks(int x, int y, int z) {
// CHECK-NEXT: ImplicitCastExpr {{.*}} <IntegralToBoolean>
// CHECK-NEXT: `-ImplicitCastExpr {{.*}} <LValueToRValue>
// CHECK-NEXT: `-DeclRefExpr {{.*}} 'x' 'int'
// CHECK-EMPTY:
// CHECK-EMPTY:
// CHECK: [ B4 (live expressions at block exit) ]
// CHECK-EMPTY:
// CHECK-NEXT: DeclRefExpr {{.*}} 'y' 'int'
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