| Issue |
150338
|
| Summary |
clang crashes on valid code at -O1 and above on x86_64-linux-gnu: Assertion `hasUseList()' failed
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
zhendongsu
|
It appears to be a recent regression as it doesn't reproduce with the latest Compiler Explorer build.
```
[515] % clangtk -v
clang version 22.0.0git (https://github.com/llvm/llvm-project.git 71c06d7a5f99ef7039b024d75cbdcddd71872602)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/home/suz/suz-local/software/local/clang-trunk/bin
Build config: +assertions
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12
Candidate multilib: .;@m64
Selected multilib: .;@m64
Found CUDA installation: /usr/local/cuda, version 12.1
[516] %
[516] % clangtk -O1 small.c
clang-22: /local/suz-local/software/clangbuild/llvm-project/llvm/include/llvm/IR/Value.h:357: llvm::Value::use_iterator llvm::Value::materialized_use_begin(): Assertion `hasUseList()' 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: /local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22 -cc1 -triple x86_64-unknown-linux-gnu -O1 -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -main-file-name small.c -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/local/suz-local/software/emitesting/bugs/20250723-clangtk-m64-O3-build-232105/delta -fcoverage-compilation-dir=/local/suz-local/software/emitesting/bugs/20250723-clangtk-m64-O3-build-232105/delta -resource-dir /local/home/suz/suz-local/software/local/clang-trunk/lib/clang/22 -I /usr/local/include -I /local/suz-local/software/local/include -internal-isystem /local/home/suz/suz-local/software/local/clang-trunk/lib/clang/22/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -ferror-limit 19 -fmessage-length=100 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/small-7ab6d0.o -x c small.c
1. <eof> parser at end of file
2. Optimizer
3. Running pass "function<eager-inv>(float2int,lower-constant-intrinsics,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<interleave-forced-only;vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;no-hoist-loads-stores-with-cond-faulting;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,vector-combine,instcombine<max-iterations=1;no-verify-fixpoint>,loop-unroll<O1>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;hoist-loads-stores-with-cond-faulting;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)" on module "small.c"
4. Running pass "instcombine<max-iterations=1;no-verify-fixpoint>" on function "e"
#0 0x00005623f4e4ecd0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x4215cd0)
#1 0x00005623f4e4b97f llvm::sys::RunSignalHandlers() (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x421297f)
#2 0x00005623f4e4bad2 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007fc314aa6520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007fc314afa9fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
#5 0x00007fc314afa9fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
#6 0x00007fc314afa9fc pthread_kill ./nptl/pthread_kill.c:89:10
#7 0x00007fc314aa6476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
#8 0x00007fc314a8c7f3 abort ./stdlib/abort.c:81:7
#9 0x00007fc314a8c71b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x00007fc314a9de96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#11 0x00005623f3d3b209 (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x3102209)
#12 0x00005623f4f40361 llvm::wouldInstructionBeTriviallyDead(llvm::Instruction const*, llvm::TargetLibraryInfo const*) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x4307361)
#13 0x00005623f498607b llvm::InstCombinerImpl::run() (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x3d4d07b)
#14 0x00005623f4987e0a combineInstructionsOverFunction(llvm::Function&, llvm::InstructionWorklist&, llvm::AAResults*, llvm::AssumptionCache&, llvm::TargetLibraryInfo&, llvm::TargetTransformInfo&, llvm::DominatorTree&, llvm::OptimizationRemarkEmitter&, llvm::BlockFrequencyInfo*, llvm::BranchProbabilityInfo*, llvm::ProfileSummaryInfo*, llvm::InstCombineOptions const&) InstructionCombining.cpp:0:0
#15 0x00005623f49891e0 llvm::InstCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x3d501e0)
#16 0x00005623f50eb566 llvm::detail::PassModel<llvm::Function, llvm::InstCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x44b2566)
#17 0x00005623f47a67d7 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x3b6d7d7)
#18 0x00005623f1f212e6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x12e82e6)
#19 0x00005623f47a6d49 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x3b6dd49)
#20 0x00005623f1f219d6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x12e89d6)
#21 0x00005623f47a4af4 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x3b6baf4)
#22 0x00005623f50fa503 (anonymous namespace)::EmitAssemblyHelper::RunOptimizationPipeline(clang::BackendAction, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>&, std::unique_ptr<llvm::ToolOutputFile, std::default_delete<llvm::ToolOutputFile>>&, clang::BackendConsumer*) BackendUtil.cpp:0:0
#23 0x00005623f50feaf3 clang::emitBackendOutput(clang::CompilerInstance&, clang::CodeGenOptions&, llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>, std::unique_ptr<llvm::raw_pwrite_stream, std::default_delete<llvm::raw_pwrite_stream>>, clang::BackendConsumer*) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x44c5af3)
#24 0x00005623f57f035f clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x4bb735f)
#25 0x00005623f72391fc clang::ParseAST(clang::Sema&, bool, bool) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x66001fc)
#26 0x00005623f5b0c1f9 clang::FrontendAction::Execute() (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x4ed31f9)
#27 0x00005623f5a87ed5 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x4e4eed5)
#28 0x00005623f5bfc5b8 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0x4fc35b8)
#29 0x00005623f1aa5403 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0xe6c403)
#30 0x00005623f1a9b9ba ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#31 0x00005623f1aa0470 clang_main(int, char**, llvm::ToolContext const&) (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0xe67470)
#32 0x00005623f196d89b main (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0xd3489b)
#33 0x00007fc314a8dd90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#34 0x00007fc314a8de40 call_init ./csu/../csu/libc-start.c:128:20
#35 0x00007fc314a8de40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#36 0x00005623f1a9b0e5 _start (/local/home/suz/suz-local/software/local/clang-trunk/bin/clang-22+0xe620e5)
clangtk: error: unable to execute command: Aborted
clangtk: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 22.0.0git (https://github.com/llvm/llvm-project.git 71c06d7a5f99ef7039b024d75cbdcddd71872602)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/home/suz/suz-local/software/local/clang-trunk/bin
Build config: +assertions
clangtk: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clangtk: note: diagnostic msg: /tmp/small-db824a.c
clangtk: note: diagnostic msg: /tmp/small-db824a.sh
clangtk: note: diagnostic msg:
********************
[517] %
[517] % cat small.c
int a, c, d;
static int *b;
int *e(int **f) {
int g, *h = &g;
d = *b;
if (a)
e(&h);
return *f;
}
int main() {
c = a - (a & 744049087);
if (c > 1818615278) {
int i, **j = &b;
*j = &i;
}
return 0;
}
```
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