https://llvm.org/bugs/show_bug.cgi?id=31615
Bug ID: 31615
Summary: Brackets inside inline asm crash backend
Product: new-bugs
Version: 3.9
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: pmatos@linki.tools
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
The following code snippet crashs the backend:
// inlbra2.c
void foo() { __asm__("#{{[a-zA-Z]}}":::"memory"); }
int main(void) { return 0; }
Try:
$ ~/INSTALLS/clang+llvm-3.9.0-x86_64-fedora23/bin/clang -S -o- inbra2.c
.text
.file "inbra2.c"
.globl foo
.p2align 4, 0x90
.type foo,@function
foo: # @foo
.cfi_startproc
# BB#0:
pushq %rbp
.Ltmp0:
.cfi_def_cfa_offset 16
.Ltmp1:
.cfi_offset %rbp, -16
movq %rsp, %rbp
.Ltmp2:
.cfi_def_cfa_register %rbp
#APP
fatal error: error in backend: Nested variants found in inline asm string:
'#$($([a-zA-Z]$)$)'
clang-3.9: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
clang version 3.9.0 (tags/RELEASE_390/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/pmatos/INSTALLS/clang+llvm-3.9.0-x86_64-fedora23/bin
clang-3.9: 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-3.9: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.9: note: diagnostic msg: /tmp/inbra2-2cc6fb.c
clang-3.9: note: diagnostic msg: /tmp/inbra2-2cc6fb.sh
clang-3.9: note: diagnostic msg:
********************
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