[clang] [webkit.UncountedLambdaCapturesChecker] Ignore trivial functions and [[clang::noescape]]. (PR #113845)

Thu Oct 31 00:31:55 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `openmp-offload-libc-amdgpu-runtime` running on `omp-vega20-1` while building `clang` at step 7 "Add check check-clang".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/73/builds/7809

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 7 (Add check check-clang) failure: test (failure)
******************** TEST 'Clang :: Analysis/Checkers/WebKit/uncounted-lambda-captures.cpp' FAILED ********************
Exit Code: 139

Command Output (stderr):
--
RUN: at line 1: /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang -cc1 -internal-isystem /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/lib/clang/20/include -nostdsysteminc -analyze -analyzer-constraints=range -setup-static-analyzer -analyzer-checker=webkit.UncountedLambdaCapturesChecker -verify /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.src/clang/test/Analysis/Checkers/WebKit/uncounted-lambda-captures.cpp
+ /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang -cc1 -internal-isystem /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/lib/clang/20/include -nostdsysteminc -analyze -analyzer-constraints=range -setup-static-analyzer -analyzer-checker=webkit.UncountedLambdaCapturesChecker -verify /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.src/clang/test/Analysis/Checkers/WebKit/uncounted-lambda-captures.cpp
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang -cc1 -internal-isystem /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/lib/clang/20/include -nostdsysteminc -analyze -analyzer-constraints=range -setup-static-analyzer -analyzer-checker=webkit.UncountedLambdaCapturesChecker -verify /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.src/clang/test/Analysis/Checkers/WebKit/uncounted-lambda-captures.cpp
1.	<eof> parser at end of file
 #0 0x0000556fb85cabef llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0x2bbabef)
 #1 0x0000556fb85c8144 SignalHandler(int) Signals.cpp:0:0
 #2 0x00007fecd96ed420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
 #3 0x0000556fbc3d7358 clang::Expr::IgnoreParenCasts() (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0x69c7358)
 #4 0x0000556fbac38813 clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseDeclRefExpr(clang::DeclRefExpr*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) UncountedLambdaCapturesChecker.cpp:0:0
 #5 0x0000556fbac24eeb clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::dataTraverseNode(clang::Stmt*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) UncountedLambdaCapturesChecker.cpp:0:0
 #6 0x0000556fbac2d4c9 clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseStmt(clang::Stmt*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) (.constprop.0) UncountedLambdaCapturesChecker.cpp:0:0
 #7 0x0000556fbac3bbf8 clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseFunctionHelper(clang::FunctionDecl*) UncountedLambdaCapturesChecker.cpp:0:0
 #8 0x0000556fbac23d0f clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseDecl(clang::Decl*) (.part.0) UncountedLambdaCapturesChecker.cpp:0:0
 #9 0x0000556fbac2f8ef clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseDecl(clang::Decl*) UncountedLambdaCapturesChecker.cpp:0:0
#10 0x0000556fbac47fbc clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseFunctionTemplateDecl(clang::FunctionTemplateDecl*) UncountedLambdaCapturesChecker.cpp:0:0
#11 0x0000556fbac24b63 clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseDeclContextHelper(clang::DeclContext*) (.part.0) UncountedLambdaCapturesChecker.cpp:0:0
#12 0x0000556fbac47429 clang::RecursiveASTVisitor<(anonymous namespace)::UncountedLambdaCapturesChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor>::TraverseTranslationUnitDecl(clang::TranslationUnitDecl*) UncountedLambdaCapturesChecker.cpp:0:0
#13 0x0000556fbac4a41e void clang::ento::check::ASTDecl<clang::TranslationUnitDecl>::_checkDecl<(anonymous namespace)::UncountedLambdaCapturesChecker>(void*, clang::Decl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) UncountedLambdaCapturesChecker.cpp:0:0
#14 0x0000556fbad174a1 clang::ento::CheckerManager::runCheckersOnASTDecl(clang::Decl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0x53074a1)
#15 0x0000556fba71472e (anonymous namespace)::AnalysisConsumer::HandleTranslationUnit(clang::ASTContext&) AnalysisConsumer.cpp:0:0
#16 0x0000556fbaea7b4c clang::ParseAST(clang::Sema&, bool, bool) (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0x5497b4c)
#17 0x0000556fb923cd99 clang::FrontendAction::Execute() (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0x382cd99)
#18 0x0000556fb91b959e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0x37a959e)
#19 0x0000556fb9329696 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0x3919696)
#20 0x0000556fb6958b85 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0xf48b85)
#21 0x0000556fb69508fa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#22 0x0000556fb6954807 clang_main(int, char**, llvm::ToolContext const&) (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0xf44807)
#23 0x0000556fb6879ebb main (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0xe69ebb)
#24 0x00007fecd919b083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3
#25 0x0000556fb695038e _start (/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang+0xf4038e)
/home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/tools/clang/test/Analysis/Checkers/WebKit/Output/uncounted-lambda-captures.cpp.script: line 1: 1519700 Segmentation fault      (core dumped) /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/bin/clang -cc1 -internal-isystem /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.build/lib/clang/20/include -nostdsysteminc -analyze -analyzer-constraints=range -setup-static-analyzer -analyzer-checker=webkit.UncountedLambdaCapturesChecker -verify /home/ompworker/bbot/openmp-offload-libc-amdgpu-runtime/llvm.src/clang/test/Analysis/Checkers/WebKit/uncounted-lambda-captures.cpp

--

********************

```

</details>

https://github.com/llvm/llvm-project/pull/113845