https://llvm.org/bugs/show_bug.cgi?id=24463
Bug ID: 24463 Summary: clang crashes at -Os and above on x86_64-linux-gnu Product: clang Version: trunk Hardware: PC OS: All Status: NEW Severity: normal Priority: P Component: -New Bugs Assignee: unassignedclangb...@nondot.org Reporter: s...@cs.ucdavis.edu CC: llvm-bugs@lists.llvm.org Classification: Unclassified The current clang trunk (as well as 3.3 and later releases) crashes when compiling the following test case on x86_64-linux-gnu at -Os and above in both 32-bit and 64-bit modes. This is a regression from 3.2. $ clang-trunk -v clang version 3.8.0 (trunk 245033) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /usr/local/tools/bin Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.2 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.1.0 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.2 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.2 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.1.0 Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9 Candidate multilib: .;@m64 Candidate multilib: 32;@m32 Candidate multilib: x32;@mx32 Selected multilib: .;@m64 $ $ clang-trunk -O1 small.c; ./a.out $ clang-3.2 -Os small.c; ./a.out $ $ clang-trunk -Os small.c clang: /tmp/llvm/lib/Transforms/Scalar/SROA.cpp:2251: llvm::Value *extractInteger(const llvm::DataLayout &, IRBuilderTy &, llvm::Value *, llvm::IntegerType *, uint64_t, const llvm::Twine &): Assertion `DL.getTypeStoreSize(Ty) + Offset <= DL.getTypeStoreSize(IntTy) && "Element extends past full value"' failed. #0 0x2b8afed llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/usr/local/clang-trunk/bin/clang+0x2b8afed) #1 0x2b8a536 llvm::sys::RunSignalHandlers() (/usr/local/clang-trunk/bin/clang+0x2b8a536) #2 0x2b8c343 (/usr/local/clang-trunk/bin/clang+0x2b8c343) #3 0x7fc3f413c340 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x10340) #4 0x7fc3f30d7cc9 gsignal /build/buildd/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0 #5 0x7fc3f30db0d8 abort /build/buildd/eglibc-2.19/stdlib/abort.c:91:0 #6 0x7fc3f30d0b86 __assert_fail_base /build/buildd/eglibc-2.19/assert/assert.c:92:0 #7 0x7fc3f30d0c32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32) #8 0x2607fb8 (/usr/local/clang-trunk/bin/clang+0x2607fb8) #9 0x2602f11 (/usr/local/clang-trunk/bin/clang+0x2602f11) #10 0x2601733 (/usr/local/clang-trunk/bin/clang+0x2601733) #11 0x25f085b (/usr/local/clang-trunk/bin/clang+0x25f085b) #12 0x25ead3c (/usr/local/clang-trunk/bin/clang+0x25ead3c) #13 0x2ae9b94 llvm::FPPassManager::runOnFunction(llvm::Function&) (/usr/local/clang-trunk/bin/clang+0x2ae9b94) #14 0x27a8278 (/usr/local/clang-trunk/bin/clang+0x27a8278) #15 0x2aea2b5 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/usr/local/clang-trunk/bin/clang+0x2aea2b5) #16 0x982cb3 clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::raw_pwrite_stream*) (/usr/local/clang-trunk/bin/clang+0x982cb3) #17 0x973cf5 (/usr/local/clang-trunk/bin/clang+0x973cf5) #18 0xb90006 clang::ParseAST(clang::Sema&, bool, bool) (/usr/local/clang-trunk/bin/clang+0xb90006) #19 0x76d41e clang::FrontendAction::Execute() (/usr/local/clang-trunk/bin/clang+0x76d41e) #20 0x73bf6c clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/local/clang-trunk/bin/clang+0x73bf6c) #21 0x71d883 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/local/clang-trunk/bin/clang+0x71d883) #22 0x713c45 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/local/clang-trunk/bin/clang+0x713c45) #23 0x71bfac main (/usr/local/clang-trunk/bin/clang+0x71bfac) #24 0x7fc3f30c2ec5 __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:321:0 #25 0x7136dd _start (/usr/local/clang-trunk/bin/clang+0x7136dd) Stack dump: 0. Program arguments: /usr/local/clang-trunk/bin/clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name small.c -mrelocation-model static -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -target-linker-version 2.24 -momit-leaf-frame-pointer -dwarf-column-info -resource-dir /usr/local/clang-trunk/bin/../lib/clang/3.8.0 -internal-isystem /usr/local/include -internal-isystem /usr/local/clang-trunk/bin/../lib/clang/3.8.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Os -fdebug-compilation-dir /data2/test -ferror-limit 19 -fmessage-length 108 -mstackrealign -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o /tmp/small-ad3770.o -x c small.c 1. <eof> parser at end of file 2. Per-module optimization passes 3. Running pass 'CallGraph Pass Manager' on module 'small.c'. 4. Running pass 'SROA' on function '@main' clang: error: unable to execute command: Aborted clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 3.8.0 (trunk 245033) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /usr/local/tools/bin clang: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script. clang: note: diagnostic msg: ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang: note: diagnostic msg: /tmp/small-4d0e23.c clang: note: diagnostic msg: /tmp/small-4d0e23.sh clang: note: diagnostic msg: ******************** $ ------------------------------- int a, d, f, g, i, j; struct S0 { int f0; int f1; int f2; int f3; int f4; short f5; int f6; short f7; char f8; int f9; } b, c, e; int fn1 (int p) { return p; } void fn2 (int p1, struct S0 p2, struct S0 p3) { for (; b.f1; b.f1++) { for (; e.f3 < 1; e.f3++) c.f1 = p3.f7; if (p2.f4) { i = a || p2.f5 ? p2.f5 : 1 << a; e.f5 = p3.f6; } if (p1) continue; p3 = p2; } } int fn3 () { d = 1; j = 0; return d; } void fn4 () { } static int fn5 () { struct S0 h = { 0 }; fn4 (); g = fn3 (); fn2 (g, e, h); fn1 (h.f8); f = h.f5; return 0; } int main () { fn5 (); return 0; } -- You are receiving this mail because: You are on the CC list for the bug.
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