yaxunl added a comment. In D84364#2279684 <https://reviews.llvm.org/D84364#2279684>, @hctim wrote:
> Looks like this patch broke the MSan buildbots, PTAL (repro instructions > https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild): > > http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/46239/steps/check-clang%20msan/logs/stdio > > FAIL: Clang :: SemaCUDA/deferred-oeverload.cu (11308 of 26387) > ******************** TEST 'Clang :: SemaCUDA/deferred-oeverload.cu' FAILED > ******************** > Script: > -- > : 'RUN: at line 1'; > /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/clang -cc1 > -internal-isystem > /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/lib/clang/12.0.0/include > -nostdsysteminc -fcuda-is-device -fsyntax-only -verify=dev,com > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/test/SemaCUDA/deferred-oeverload.cu > -std=c++11 -fgpu-defer-diag > : 'RUN: at line 3'; > /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/clang -cc1 > -internal-isystem > /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/lib/clang/12.0.0/include > -nostdsysteminc -fsyntax-only -verify=host,com > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/test/SemaCUDA/deferred-oeverload.cu > -std=c++11 -fgpu-defer-diag > -- > Exit Code: 77 > > Command Output (stderr): > -- > ==41680==WARNING: MemorySanitizer: use-of-uninitialized-value > #0 0xddfbf73 in > clang::OverloadCandidateSet::CompleteCandidates(clang::Sema&, > clang::OverloadCandidateDisplayKind, llvm::ArrayRef<clang::Expr*>, > clang::SourceLocation, llvm::function_ref<bool (clang::OverloadCandidate&)>) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Sema/SemaOverload.cpp:11484:9 > #1 0xde4e7ca in > clang::OverloadCandidateSet::NoteCandidates(std::__1::pair<clang::SourceLocation, > clang::PartialDiagnostic>, clang::Sema&, > clang::OverloadCandidateDisplayKind, llvm::ArrayRef<clang::Expr*>, > llvm::StringRef, clang::SourceLocation, llvm::function_ref<bool > (clang::OverloadCandidate&)>) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Sema/SemaOverload.cpp:11529:9 > #2 0xde6316f in FinishOverloadedCallExpr(clang::Sema&, clang::Scope*, > clang::Expr*, clang::UnresolvedLookupExpr*, clang::SourceLocation, > llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*, > clang::OverloadCandidateSet*, clang::OverloadCandidate**, > clang::OverloadingResult, bool) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Sema/SemaOverload.cpp:12959:19 > #3 0xde6296b in clang::Sema::BuildOverloadedCallExpr(clang::Scope*, > clang::Expr*, clang::UnresolvedLookupExpr*, clang::SourceLocation, > llvm::MutableArrayRef<clang::Expr*>, clang::SourceLocation, clang::Expr*, > bool, bool) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Sema/SemaOverload.cpp:13032:10 > #4 0xd4e126b in clang::Sema::BuildCallExpr(clang::Scope*, clang::Expr*, > clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, > clang::SourceLocation, clang::Expr*, bool) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Sema/SemaExpr.cpp:6378:16 > #5 0xd53e073 in clang::Sema::ActOnCallExpr(clang::Scope*, clang::Expr*, > clang::SourceLocation, llvm::MutableArrayRef<clang::Expr*>, > clang::SourceLocation, clang::Expr*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Sema/SemaExpr.cpp:6275:7 > #6 0xcaa957f in > clang::Parser::ParsePostfixExpressionSuffix(clang::ActionResult<clang::Expr*, > true>) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseExpr.cpp:2066:23 > #7 0xcaaf03e in > clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, > clang::Parser::TypeCastState, bool, bool*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseExpr.cpp:1811:9 > #8 0xcaa5f3e in > clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, > clang::Parser::TypeCastState, bool, bool*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseExpr.cpp:681:20 > #9 0xcaa15f3 in > clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseExpr.cpp:173:20 > #10 0xcaa13ad in > clang::Parser::ParseExpression(clang::Parser::TypeCastState) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseExpr.cpp:124:18 > #11 0xcbc8288 in > clang::Parser::ParseExprStatement(clang::Parser::ParsedStmtContext) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:446:19 > #12 0xcbc2183 in > clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, > 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, > clang::Parser::ParsedAttributesWithRange&) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:234:12 > #13 0xcbc119d in > clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, > 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:106:20 > #14 0xcbdd830 in clang::Parser::ParseCompoundStatementBody(bool) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:1098:11 > #15 0xcbe0b67 in > clang::Parser::ParseFunctionStatementBody(clang::Decl*, > clang::Parser::ParseScope&) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:2259:21 > #16 0xc9c26d4 in > clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, > clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/Parser.cpp:1375:10 > #17 0xca17b5b in clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, > clang::DeclaratorContext, clang::SourceLocation*, > clang::Parser::ForRangeInit*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseDecl.cpp:1924:27 > #18 0xc9bf6ee in > clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, > clang::ParsingDeclSpec&, clang::AccessSpecifier) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/Parser.cpp:1135:10 > #19 0xc9bde93 in > clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&, > clang::ParsingDeclSpec*, clang::AccessSpecifier) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/Parser.cpp:1151:12 > #20 0xc9bb56b in > clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, > clang::ParsingDeclSpec*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/Parser.cpp:971:12 > #21 0xc9b5d18 in > clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, > bool) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/Parser.cpp:716:12 > #22 0xc9a49cf in clang::ParseAST(clang::Sema&, bool, bool) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Parse/ParseAST.cpp:158:20 > #23 0x8de7de0 in clang::FrontendAction::Execute() > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Frontend/FrontendAction.cpp:950:8 > #24 0x8ce176d in > clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:984:33 > #25 0x905ccb9 in > clang::ExecuteCompilerInvocation(clang::CompilerInstance*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:278:25 > #26 0xb9bc9d in cc1_main(llvm::ArrayRef<char const*>, char const*, > void*) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/tools/driver/cc1_main.cpp:240:15 > #27 0xb93aa6 in ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/tools/driver/driver.cpp:330:12 > #28 0xb928ad in main > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/tools/driver/driver.cpp:407:12 > #29 0x7f3d1d0dc09a in __libc_start_main > (/lib/x86_64-linux-gnu/libc.so.6+0x2409a) > #30 0xb15209 in _start > (/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/clang-12+0xb15209) > > SUMMARY: MemorySanitizer: use-of-uninitialized-value > /b/sanitizer-x86_64-linux-fast/build/llvm-project/clang/lib/Sema/SemaOverload.cpp:11484:9 > in clang::OverloadCandidateSet::CompleteCandidates(clang::Sema&, > clang::OverloadCandidateDisplayKind, llvm::ArrayRef<clang::Expr*>, > clang::SourceLocation, llvm::function_ref<bool (clang::OverloadCandidate&)>) > Exiting > > -- > > ******************** > Testing: 0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. > ******************** > Failed Tests (1): > Clang :: SemaCUDA/deferred-oeverload.cu I am trying to reproduce this issue by building clang with -fsanitize=memory. However I got memory sanitizer failures with llvm-tblgen: [422/2415] Building Options.inc... FAILED: cd /home/yaxunl/git/llvm/build-msan && /home/yaxunl/git/llvm/build-msan/bin/llvm-tblgen -gen-opt-parser-defs -I /home/yaxunl/git/llvm/llvm/tools/clang/include/clang/Driver -I/home/yaxunl/git/llvm/llvm/tools/clang/include -I/home/yaxunl/git/llvm/build-msan/tools/clang/include -I/home/yaxunl/git/llvm/build-msan/include -I/home/yaxunl/git/llvm/llvm/include /home/yaxunl/git/llvm/llvm/tools/clang/include/clang/Driver/Options.td --write-if-changed -o tools/clang/include/clang/Driver/Options.inc -d tools/clang/include/clang/Driver/Options.inc.d 30130==WARNING: MemorySanitizer: use-of-uninitialized-value ----------------------------------------------------------- #0 0xbdfe6a in find /home/yaxunl/git/llvm/llvm/include/llvm/ADT/StringRef.h:320:11 #1 0xbdfe6a in llvm::StringRef::split(llvm::SmallVectorImpl<llvm::StringRef>&, char, int, bool) const /home/yaxunl/git/llvm/llvm/lib/Support/StringRef.cpp:344:20 #2 0xbee57c in llvm::Triple::Triple(llvm::Twine const&) /home/yaxunl/git/llvm/llvm/lib/Support/Triple.cpp:747:19 #3 0xc29d25 in llvm::sys::getProcessTriple() /home/yaxunl/git/llvm/llvm/lib/Support/Host.cpp:1597:10 #4 0xb8704e in ParseCommandLineOptions /home/yaxunl/git/llvm/llvm/lib/Support/CommandLine.cpp:1337:17 #5 0xb8704e in llvm::cl::ParseCommandLineOptions(int, char const* const*, llvm::StringRef, llvm::raw_ostream*, char const*, bool) /home/yaxunl/git/llvm/llvm/lib/Support/CommandLine.cpp:1312:24 #6 0xb27a53 in main /home/yaxunl/git/llvm/llvm/utils/TableGen/TableGen.cpp:280:3 #7 0x7f4569cc883f in __libc_start_main /build/glibc-e6zv40/glibc-2.23/csu/../csu/libc-start.c:291 #8 0x42a7a8 in _start (/mnt/sdc1/home/yaxunl/git/llvm/build-msan/bin/llvm-tblgen+0x42a7a8) Is this some known issue? Thanks. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D84364/new/ https://reviews.llvm.org/D84364 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
