This is with the Polyhedron aermod.f90 test case
(http://www.polyhedron.co.uk/pb05/polyhedron_benchmark_suite.html).
The program crashes (in << 1 sec) with
gfortran -funroll-loops -march=opteron -O2 -g aermod.f90
It does not crash:
- without: -march=opteron
- without: -funroll-loops
- with: -O1
It was working on 2007-04-23 (should be r124055) and started to fail since
2007-04-24 (should be r124093).
gdb shows:
Program received signal SIGSEGV, Segmentation fault.
#0 resini_ () at aermod.f90:23766
#1 0x00000000004c7357 in MAIN__ () at aermod.f90:2189
And valgrind:
==6590== Invalid write of size 4
==6590== at 0x4066D1: resini_ (aermod.f90:23766)
==6590== by 0x4C8BD6: MAIN__ (aermod.f90:2189)
==6590== by 0x4C95AB: main (fmain.c:22)
==6590== Address 0x1BE65FD0 is not stack'd, malloc'd or (recently) free'd
23757 DO K = 1 , NUMGRP
23758 DO J = 1 , NUMREC
23759 AVEVAL(J,K,L,M) = 0.0
23760 DO I = 1 , NHIVAL
23761 HIVALU(J,I,K,L,M) = 0.0
23762 NHIDAT(J,I,K,L,M) = 0
23763 HCLMSG(J,I,K,L,M) = ' '
23764 HMAX(I,K,L,M) = 0.0
23765 HMDATE(I,K,L,M) = 0
23766 HMLOC(I,K,L,M) = 0
23767 HMCLM(I,K,L,M) = ' '
23768 ENDDO
23769 ENDDO
--
Summary: [Regression 4.3] Crash of gen. prog. when using -
funroll-loops -march=opteron
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: burnus at gcc dot gnu dot org
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31697
