https://llvm.org/bugs/show_bug.cgi?id=28935
Bug ID: 28935
Summary: crash at -Os and above in 64-bit mode on
x86_64-linux-gnu (Assertion
`getTypeSizeInBits(Op->getType()) <
getTypeSizeInBits(Ty) && "This is not an extending
conversion!"' failed.)
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: chengnian...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
$ clang-trunk -v
clang version 4.0.0 (trunk 278233)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
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/4.9.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.3.0
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ clang-trunk -Os small.c
clang-4.0:
/tmp/llvm-builder/llvm-source-trunk/lib/Analysis/ScalarEvolution.cpp:1407:
const llvm::SCEV* llvm::ScalarEvolution::getZeroExtendExpr(const llvm::SCEV*,
llvm::Type*): Assertion `getTypeSizeInBits(Op->getType()) <
getTypeSizeInBits(Ty) && "This is not an extending conversion!"' failed.
#0 0x0000000001c22da5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/clang-trunk/bin/clang-4.0+0x1c22da5)
#1 0x0000000001c20d0e llvm::sys::RunSignalHandlers()
(/usr/local/clang-trunk/bin/clang-4.0+0x1c20d0e)
#2 0x0000000001c20e72 SignalHandler(int)
(/usr/local/clang-trunk/bin/clang-4.0+0x1c20e72)
#3 0x00007fe050527330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007fe04f318c37 gsignal
/build/eglibc-oGUzwX/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007fe04f31c028 abort
/build/eglibc-oGUzwX/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007fe04f311bf6 __assert_fail_base
/build/eglibc-oGUzwX/eglibc-2.19/assert/assert.c:92:0
#7 0x00007fe04f311ca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x00000000014faf7c llvm::ScalarEvolution::getZeroExtendExpr(llvm::SCEV
const*, llvm::Type*) (/usr/local/clang-trunk/bin/clang-4.0+0x14faf7c)
#9 0x0000000001ad67d2 (anonymous namespace)::IndVarSimplify::run(llvm::Loop*)
[clone .part.454] (/usr/local/clang-trunk/bin/clang-4.0+0x1ad67d2)
#10 0x0000000001ad93d9 (anonymous
namespace)::IndVarSimplifyLegacyPass::runOnLoop(llvm::Loop*,
llvm::LPPassManager&) [clone .part.455]
(/usr/local/clang-trunk/bin/clang-4.0+0x1ad93d9)
#11 0x0000000002492b5f llvm::LPPassManager::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-4.0+0x2492b5f)
#12 0x00000000018a5763 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/clang-trunk/bin/clang-4.0+0x18a5763)
#13 0x0000000002471bc0 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-4.0+0x2471bc0)
#14 0x00000000018a5dff llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/clang-trunk/bin/clang-4.0+0x18a5dff)
#15 0x0000000001d7bea0 clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions
const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/local/clang-trunk/bin/clang-4.0+0x1d7bea0)
#16 0x00000000023716e8
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/clang-trunk/bin/clang-4.0+0x23716e8)
#17 0x00000000026c419b clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/clang-trunk/bin/clang-4.0+0x26c419b)
#18 0x0000000002371ade clang::CodeGenAction::ExecuteAction()
(/usr/local/clang-trunk/bin/clang-4.0+0x2371ade)
#19 0x000000000208ee46 clang::FrontendAction::Execute()
(/usr/local/clang-trunk/bin/clang-4.0+0x208ee46)
#20 0x0000000002069e4e
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/clang-trunk/bin/clang-4.0+0x2069e4e)
#21 0x0000000002114946
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/clang-trunk/bin/clang-4.0+0x2114946)
#22 0x0000000000a52ee8 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/clang-trunk/bin/clang-4.0+0xa52ee8)
#23 0x00000000009fdbcf main (/usr/local/clang-trunk/bin/clang-4.0+0x9fdbcf)
#24 0x00007fe04f303f45 __libc_start_main
/build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:321:0
#25 0x0000000000a4ed9d _start (/usr/local/clang-trunk/bin/clang-4.0+0xa4ed9d)
Stack dump:
0. Program arguments: /usr/local/clang-trunk/bin/clang-4.0 -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
-momit-leaf-frame-pointer -dwarf-column-info -debugger-tuning=gdb -resource-dir
/usr/local/clang-trunk/bin/../lib/clang/4.0.0 -c-isystem . -c-isystem
/usr/local/include/csmith-2.2.0/ -c-isystem /usr/local/include/csmith-2.2.0/
-internal-isystem /usr/local/include -internal-isystem
/usr/local/clang-trunk/bin/../lib/clang/4.0.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -Os -fdebug-compilation-dir
/home/cnsun/ramdisk/hermes/run-2/res/20160810-clang-trunk-m64-g-O3-build-134704/delta
-ferror-limit 19 -fmessage-length 118 -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp
-o /tmp/small-fba2b9.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 'Loop Pass Manager' on function '@fn2'
5. Running pass 'Induction Variable Simplification' on basic block
'%for.cond'
clang-4.0: error: unable to execute command: Aborted (core dumped)
clang-4.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 4.0.0 (trunk 278233)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-4.0: 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-4.0: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-4.0: note: diagnostic msg: /tmp/small-6e2525.c
clang-4.0: note: diagnostic msg: /tmp/small-6e2525.sh
clang-4.0: note: diagnostic msg:
********************
$ cat small.c
int a;
char d;
unsigned short fn1(unsigned short, long long);
static char fn2(p1) {
char e;
int f;
for (;; f++) {
e = fn1(f, f);
d = e << a;
}
}
unsigned short fn1(unsigned short p1, long long p2) {
fn2(p2);
return p1;
}
$
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