[clang] [alpha.webkit.UnretainedCallArgsChecker] Add a checker for NS or CF type call arguments. (PR #130729)

Tue Mar 11 12:59:20 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-sie-ubuntu-fast` running on `sie-linux-worker` while building `clang` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/144/builds/20047

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'Clang :: Analysis/Checkers/WebKit/unretained-call-args.mm' FAILED ********************
Exit Code: 134

Command Output (stderr):
--
RUN: at line 1: /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang -cc1 -internal-isystem /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/lib/clang/21/include -nostdsysteminc -analyze -analyzer-constraints=range -setup-static-analyzer -analyzer-checker=alpha.webkit.UnretainedCallArgsChecker -verify /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/Analysis/Checkers/WebKit/unretained-call-args.mm
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang -cc1 -internal-isystem /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/lib/clang/21/include -nostdsysteminc -analyze -analyzer-constraints=range -setup-static-analyzer -analyzer-checker=alpha.webkit.UnretainedCallArgsChecker -verify /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/Analysis/Checkers/WebKit/unretained-call-args.mm
clang: /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/include/llvm/Support/Casting.h:662: decltype(auto) llvm::dyn_cast(From*) [with To = clang::ParenExpr; From = clang::Expr]: Assertion `detail::isPresent(Val) && "dyn_cast on a non-existent value"' failed.
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/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang -cc1 -internal-isystem /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/lib/clang/21/include -nostdsysteminc -analyze -analyzer-constraints=range -setup-static-analyzer -analyzer-checker=alpha.webkit.UnretainedCallArgsChecker -verify /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/Analysis/Checkers/WebKit/unretained-call-args.mm
1.	<eof> parser at end of file
 #0 0x0000642e8f7284c0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x21b94c0)
 #1 0x0000642e8f7258bf llvm::sys::RunSignalHandlers() (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x21b68bf)
 #2 0x0000642e8f725a0a SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #3 0x0000735e5ab0a520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x0000735e5ab5e9fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #5 0x0000735e5ab5e9fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
 #6 0x0000735e5ab5e9fc pthread_kill ./nptl/pthread_kill.c:89:10
 #7 0x0000735e5ab0a476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #8 0x0000735e5aaf07f3 abort ./stdlib/abort.c:81:7
 #9 0x0000735e5aaf071b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x0000735e5ab01e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#11 0x0000642e921fceb4 (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x4c8deb4)
#12 0x0000642e92d5b8b8 clang::Expr::IgnoreParenCasts() (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x57ec8b8)
#13 0x0000642e918f41bf (anonymous namespace)::RawPtrRefCallArgsChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor::VisitObjCMessageExpr(clang::ObjCMessageExpr*) RawPtrRefCallArgsChecker.cpp:0:0
#14 0x0000642e92c9b6d0 clang::DynamicRecursiveASTVisitorBase<false>::TraverseObjCMessageExpr(clang::ObjCMessageExpr*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x572c6d0)
#15 0x0000642e92c88ff1 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::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) DynamicRecursiveASTVisitor.cpp:0:0
#16 0x0000642e92c89134 clang::DynamicRecursiveASTVisitorBase<false>::TraverseStmt(clang::Stmt*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x571a134)
#17 0x0000642e92c9b608 clang::DynamicRecursiveASTVisitorBase<false>::TraverseObjCMessageExpr(clang::ObjCMessageExpr*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x572c608)
#18 0x0000642e92c88ff1 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::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) DynamicRecursiveASTVisitor.cpp:0:0
#19 0x0000642e92c89134 clang::DynamicRecursiveASTVisitorBase<false>::TraverseStmt(clang::Stmt*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x571a134)
#20 0x0000642e92c95378 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::TraverseBreakStmt(clang::BreakStmt*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) (.part.0) DynamicRecursiveASTVisitor.cpp:0:0
#21 0x0000642e92cb0f13 clang::DynamicRecursiveASTVisitorBase<false>::TraverseCallExpr(clang::CallExpr*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x5741f13)
#22 0x0000642e92c88ff1 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::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) DynamicRecursiveASTVisitor.cpp:0:0
#23 0x0000642e92c89134 clang::DynamicRecursiveASTVisitorBase<false>::TraverseStmt(clang::Stmt*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x571a134)
#24 0x0000642e92c95378 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::TraverseBreakStmt(clang::BreakStmt*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) (.part.0) DynamicRecursiveASTVisitor.cpp:0:0
#25 0x0000642e92cafb13 clang::DynamicRecursiveASTVisitorBase<false>::TraverseCXXBindTemporaryExpr(clang::CXXBindTemporaryExpr*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x5740b13)
#26 0x0000642e92c88ff1 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::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) DynamicRecursiveASTVisitor.cpp:0:0
#27 0x0000642e92c89134 clang::DynamicRecursiveASTVisitorBase<false>::TraverseStmt(clang::Stmt*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x571a134)
#28 0x0000642e92c95378 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::TraverseBreakStmt(clang::BreakStmt*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) (.part.0) DynamicRecursiveASTVisitor.cpp:0:0
#29 0x0000642e92c97ea6 clang::DynamicRecursiveASTVisitorBase<false>::TraverseExprWithCleanups(clang::ExprWithCleanups*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x5728ea6)
#30 0x0000642e92c88ff1 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::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) DynamicRecursiveASTVisitor.cpp:0:0
#31 0x0000642e92c89134 clang::DynamicRecursiveASTVisitorBase<false>::TraverseStmt(clang::Stmt*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x571a134)
#32 0x0000642e92cbee4d clang::DynamicRecursiveASTVisitorBase<false>::TraverseVarDecl(clang::VarDecl*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x574fe4d)
#33 0x0000642e918f2edb (anonymous namespace)::RawPtrRefCallArgsChecker::checkASTDecl(clang::TranslationUnitDecl const*, clang::ento::AnalysisManager&, clang::ento::BugReporter&) const::LocalVisitor::TraverseDecl(clang::Decl*) RawPtrRefCallArgsChecker.cpp:0:0
#34 0x0000642e92c88856 clang::DynamicRecursiveASTVisitorBase<false>::TraverseDeclStmt(clang::DeclStmt*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x5719856)
#35 0x0000642e92c88ff1 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::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) DynamicRecursiveASTVisitor.cpp:0:0
#36 0x0000642e92c89134 clang::DynamicRecursiveASTVisitorBase<false>::TraverseStmt(clang::Stmt*) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang+0x571a134)
#37 0x0000642e92c95378 clang::RecursiveASTVisitor<(anonymous namespace)::Impl<false>>::TraverseBreakStmt(clang::BreakStmt*, llvm::SmallVectorImpl<llvm::PointerIntPair<clang::Stmt*, 1u, bool, llvm::PointerLikeTypeTraits<clang::Stmt*>, llvm::PointerIntPairInfo<clang::Stmt*, 1u, llvm::PointerLikeTypeTraits<clang::Stmt*>>>>*) (.part.0) DynamicRecursiveASTVisitor.cpp:0:0
...

```

</details>

https://github.com/llvm/llvm-project/pull/130729