matmul_1.f90 fails with a segmentation fault on ia64-unknown-linux-gnu,
probably due to an array overrun:
$ gfortran -g matmul_1.f90
$ gfortran -v
Using built-in specs.
Target: ia64-unknown-linux-gnu
Configured with: ../gcc-4.1-20050611/configure --prefix=/home/zfkts --enable-
languages=c,f95
Thread model: posix
gcc version 4.1.0 20050611 (experimental)
$ gdb ./a.out
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This GDB was configured as "ia64-redhat-linux-gnu"...Using host libthread_db
library "/lib/tls/libthread_db.so.1".
(gdb) r
Starting program: /home/zfkts/Krempel/Matmul/a.out
Program received signal SIGSEGV, Segmentation fault.
0x20000000002cdf60 in _int_free () from /lib/tls/libc.so.6.1
(gdb) bt
#0 0x20000000002cdf60 in _int_free () from /lib/tls/libc.so.6.1
#1 0x20000000002cb6e0 in free () from /lib/tls/libc.so.6.1
#2 0x2000000000052380 in *_gfortrani_internal_free (mem=0x600000000000e508)
at ../../../gcc-4.1-20050611/libgfortran/runtime/memory.c:212
#3 0x20000000000525b0 in *_gfortran_deallocate (mem=0x60000fffffff93b8,
stat=0x0) at ../../../gcc-4.1-20050611/libgfortran/runtime/memory.c:311
#4 0x4000000000003a40 in MAIN__ () at matmul_1.f90:51
#5 0x4000000000003ba0 in main (argc=1, argv=0x60000fffffff9d68)
at ../../../gcc-4.1-20050611/libgfortran/fmain.c:18
(gdb)
There is some invalid code in matmul_1.f90. Line 36 should read
c(1:3,1:2) = matmul (a(7:9,3:N), b(3:N,3:4))
but that is not the cause for the segfault.
--
Summary: matmul_1.f90 testsuite failure
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P2
Component: libfortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tkoenig at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: ia64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22046
