$ clang-trunk -v clang version 13.0.0 (https://github.com/llvm/llvm-project.git 2e9c75daffddd65e37c3236708b5b133e6f5f2f5) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /home/cnsun/usr/bin Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9 Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10 Candidate multilib: .;@m64 Candidate multilib: 32;@m32 Candidate multilib: x32;@mx32 Selected multilib: .;@m64 $ cat mutant.c p() { unsigned x[] = {p->a}; (unsigned)x; } $ clang-trunk mutant.c mutant.c:1:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int] p() { ^ mutant.c:2:20: error: member reference base type 'int ()' is not a structure or union unsigned x[] = {p->a}; ~^ ~ clang-13: /tmp/tmp.xjN6dMkdrg-clang-builder/llvm-project/clang/lib/Sema/SemaCast.cpp:2833: void {anonymous}::CastOperation::CheckCStyleCast(): Assertion `(DestType->containsErrors() || SrcExpr.get()->containsErrors() || SrcExpr.get()->containsErrors()) && "should only occur in error-recovery path."' failed. PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script. Stack dump: 0. Program arguments: /scratch/software/clang-trunk/bin/clang-13 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all --mrelax-relocations -disable-free -main-file-name mutant.c -mrelocation-model static -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210625_215453_00dc/delta/perses_result -resource-dir /scratch/software/clang-trunk/lib/clang/13.0.0 -c-isystem . -c-isystem /usr/local/include/cmsith -internal-isystem /scratch/software/clang-trunk/lib/clang/13.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdebug-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210625_215453_00dc/delta/perses_result -ferror-limit 19 -fgnuc-version=4.2.1 -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/mutant-19ef58.o -x c mutant.c 1. mutant.c:3:14: current parser token ';' 2. mutant.c:1:5: parsing function body 'p' 3. mutant.c:1:5: in compound statement ('{}') #0 0x00005645d9229184 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0 #1 0x00005645d922693e SignalHandler(int) Signals.cpp:0:0 #2 0x00007fa90c4193c0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0) #3 0x00007fa90beb818b raise /build/glibc-ZN95T4/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1 #4 0x00007fa90be97859 abort /build/glibc-ZN95T4/glibc-2.31/stdlib/abort.c:81:7 #5 0x00007fa90be97729 get_sysdep_segment_value /build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:509:8 #6 0x00007fa90be97729 _nl_load_domain /build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:970:34 #7 0x00007fa90bea8f36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36) #8 0x00005645db5b41e1 (anonymous namespace)::CastOperation::CheckCStyleCast() SemaCast.cpp:0:0 #9 0x00005645db5b5b5d clang::Sema::BuildCStyleCastExpr(clang::SourceLocation, clang::TypeSourceInfo*, clang::SourceLocation, clang::Expr*) (/scratch/software/clang-trunk/bin/clang-13+0x5ce7b5d) #10 0x00005645db8e5211 clang::Sema::ActOnCastExpr(clang::Scope*, clang::SourceLocation, clang::Declarator&, clang::OpaquePtr<clang::QualType>&, clang::SourceLocation, clang::Expr*) (/scratch/software/clang-trunk/bin/clang-13+0x6017211) #11 0x00005645db4a450f clang::Parser::ParseParenExpression(clang::Parser::ParenParseOption&, bool, bool, clang::OpaquePtr<clang::QualType>&, clang::SourceLocation&) (/scratch/software/clang-trunk/bin/clang-13+0x5bd650f) #12 0x00005645db49a610 clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, bool&, clang::Parser::TypeCastState, bool, bool*) (/scratch/software/clang-trunk/bin/clang-13+0x5bcc610) #13 0x00005645db49c50b clang::Parser::ParseCastExpression(clang::Parser::CastParseKind, bool, clang::Parser::TypeCastState, bool, bool*) (/scratch/software/clang-trunk/bin/clang-13+0x5bce50b) #14 0x00005645db49c5ad clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) (/scratch/software/clang-trunk/bin/clang-13+0x5bce5ad) #15 0x00005645db49fb0d clang::Parser::ParseExpression(clang::Parser::TypeCastState) (/scratch/software/clang-trunk/bin/clang-13+0x5bd1b0d) #16 0x00005645db50774e clang::Parser::ParseExprStatement(clang::Parser::ParsedStmtContext) (/scratch/software/clang-trunk/bin/clang-13+0x5c3974e) #17 0x00005645db4fece2 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributesWithRange&) (/scratch/software/clang-trunk/bin/clang-13+0x5c30ce2) #18 0x00005645db4ff6ca clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/scratch/software/clang-trunk/bin/clang-13+0x5c316ca) #19 0x00005645db500649 clang::Parser::ParseCompoundStatementBody(bool) (/scratch/software/clang-trunk/bin/clang-13+0x5c32649) #20 0x00005645db502c5a clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/scratch/software/clang-trunk/bin/clang-13+0x5c34c5a) #21 0x00005645db448ef2 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/scratch/software/clang-trunk/bin/clang-13+0x5b7aef2) #22 0x00005645db475850 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/scratch/software/clang-trunk/bin/clang-13+0x5ba7850) #23 0x00005645db4436f6 clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/scratch/software/clang-trunk/bin/clang-13+0x5b756f6) #24 0x00005645db443ce1 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (.part.0) Parser.cpp:0:0 #25 0x00005645db44a4e7 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) (/scratch/software/clang-trunk/bin/clang-13+0x5b7c4e7) #26 0x00005645db44ba7e clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool) (/scratch/software/clang-trunk/bin/clang-13+0x5b7da7e) #27 0x00005645db44be29 clang::Parser::ParseFirstTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) (/scratch/software/clang-trunk/bin/clang-13+0x5b7de29) #28 0x00005645db43e29a clang::ParseAST(clang::Sema&, bool, bool) (/scratch/software/clang-trunk/bin/clang-13+0x5b7029a) #29 0x00005645da385968 clang::CodeGenAction::ExecuteAction() (/scratch/software/clang-trunk/bin/clang-13+0x4ab7968) #30 0x00005645d9c35599 clang::FrontendAction::Execute() (/scratch/software/clang-trunk/bin/clang-13+0x4367599) #31 0x00005645d9bc87e6 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/scratch/software/clang-trunk/bin/clang-13+0x42fa7e6) #32 0x00005645d9d13480 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/scratch/software/clang-trunk/bin/clang-13+0x4445480) #33 0x00005645d6b33696 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/scratch/software/clang-trunk/bin/clang-13+0x1265696) #34 0x00005645d6b2f9d8 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0 #35 0x00005645d6a5d0e6 main (/scratch/software/clang-trunk/bin/clang-13+0x118f0e6) #36 0x00007fa90be990b3 __libc_start_main /build/glibc-ZN95T4/glibc-2.31/csu/../csu/libc-start.c:342:3 #37 0x00005645d6b2f54e _start (/scratch/software/clang-trunk/bin/clang-13+0x126154e) clang-13: error: unable to execute command: Aborted (core dumped) clang-13: error: clang frontend command failed due to signal (use -v to see invocation) clang version 13.0.0 (https://github.com/llvm/llvm-project.git 2e9c75daffddd65e37c3236708b5b133e6f5f2f5) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /home/cnsun/usr/bin clang-13: note: diagnostic msg: ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang-13: note: diagnostic msg: /tmp/mutant-d3de8a.c clang-13: note: diagnostic msg: /tmp/mutant-d3de8a.sh clang-13: note: diagnostic msg: ********************