http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52307
Bug #: 52307
Summary: Segmentation fault in Lapack with -O3 -floop-flatten
-floop-strip-mine
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Running the Lapack tests (and looking at PR 50561), I encountered this:
All tests for SPP drivers passed the threshold ( 1910 tests run)
SPB routines passed the tests of the error exits
Program received signal 11 (SIGSEGV): Segmentation fault.
Backtrace for this error:
+ [0xfff8e340418]
+ function 0000009f.plt_call.cosf@@GLIBC_2.3+0 (0x100B6FDC)
from file crtstuff.c
tkoenig@gcc1-power7 TESTING]$ ~/bin/gfortran -v
Using built-in specs.
COLLECT_GCC=/home/tkoenig/bin/gfortran
COLLECT_LTO_WRAPPER=/home/tkoenig/libexec/gcc/powerpc64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: powerpc64-unknown-linux-gnu
Configured with: ../trunk/configure --prefix=/home/tkoenig
--enable-languages=c,fortran --with-ppl --with-cloog
Thread model: posix
gcc version 4.7.0 20120218 (experimental) [trunk revision 184372] (GCC)
[tkoenig@gcc1-power7 TESTING]$
This is after the fix for PR 50561, and may be related.
I haven't yet checked if this is a regression.
