https://llvm.org/bugs/show_bug.cgi?id=27178
Bug ID: 27178
Summary: optimization generates a segfault or bus error
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: pavel.sa...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
- Optimized binary with -O1 or -O2 generates a segfault or bus error on two
different installations (opensuse Leap 42.1 and 13.2), but not on opensuse 13.1
- Non-optimized binary runs cleanly
- Linking with -ldmalloc finds no memory issues
- Compiled with gcc, either optimized or not, the binary runs cleanly
Platform:
pavel@sparse{gridutils}uname -a
Linux sparse 4.4.1-2.gddc5d70-default #1 SMP PREEMPT Tue Feb 2 16:31:39 UTC
2016 (ddc5d70) x86_64 x86_64 x86_64 GNU/Linux
pavel@sparse{gridutils}clang --version
clang version 3.7.0 (tags/RELEASE_370/final 246586)
Target: x86_64-suse-linux
Thread model: posix
How to reproduce:
1. svn checkout https://github.com/sakov/gridutils-c
2. cd gridutils-c/trunk/gridutils
3. ./configure
4. make
5. cd test
6. ../getnodes gridpoints_DD-raw.txt -i DD -o DD -v > gridpoints_DD.txt
7. ../getnodes gridpoints_DD.txt -i DD -o CO > gridpoints_CO.txt
8. ../getnodes gridpoints_CO.txt -i CO -o CE > gridpoints_CE.txt
9. ../getnodes gridpoints_CE.txt -i CE -o CO > gridpoints_CO2.txt
gets: Segmentation fault
Cheers,
Pavel Sakov
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