[llvm-bugs] [Bug 24463] New: clang crashes at -Os and above on x86_64-linux-gnu
via llvm-bugs
llvm-bugs at lists.llvm.org
Fri Aug 14 11:34:13 PDT 2015
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: unassignedclangbugs at nondot.org
Reporter: su at cs.ucdavis.edu
CC: llvm-bugs at 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;
}
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