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[Bug fortran/31320] New: Illegal read with gfortran.dg/alloc_comp_assign_2.f90 and *_3.f90
- From: "burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 22 Mar 2007 23:16:45 -0000
- Subject: [Bug fortran/31320] New: Illegal read with gfortran.dg/alloc_comp_assign_2.f90 and *_3.f90
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
gfortran -g gfortran.dg/alloc_comp_assign_2.f90
valgrind ./a.out
==30049== Invalid read of size 1
==30049== at 0x4C24854: memcpy (in
/usr/lib64/valgrind/amd64-linux/vgpreload_memcheck.so)
==30049== by 0x401682: MAIN__ (in
/projects/tob/gcc/gcc/testsuite/gfortran.dg/a.out)
==30049== by 0x405FAB: main (fmain.c:22)
==30049== Address 0x404D64B is 3 bytes after a block of size 16 alloc'd
==30049== at 0x4C22C56: malloc (in
/usr/lib64/valgrind/amd64-linux/vgpreload_memcheck.so)
==30049== by 0x4E3DD78: _gfortrani_get_mem (memory.c:53)
==30049== by 0x400A5C: MAIN__ (in
/projects/tob/gcc/gcc/testsuite/gfortran.dg/a.out)
==30049== by 0x405FAB: main (fmain.c:22)
I checked the example itself with g95 and NAG f95 and both fail at the second,
third and fourth "call abort()" whereas ifort has a segv.
Is this example (PR 20541) really valid?
A check with NAG f95, g95 and ifort with valgrind shows no problem for NAG f95,
and invalid reads for g95 and ifort.
For alloc_comp_assign_3.f90: Compiles with g95, ifort and NAG f95 and gives no
"call abort()", however, gfortran has:
==30454== Invalid read of size 1
==30454== at 0x4C24854: memcpy (in
/usr/lib64/valgrind/amd64-linux/vgpreload_memcheck.so)
==30454== by 0x401223: MAIN__ (alloc_comp_assign_3.f90:22)
==30454== by 0x40444B: main (fmain.c:22)
==30454== Address 0x404D64B is 3 bytes after a block of size 16 alloc'd
==30454== at 0x4C22C56: malloc (in
/usr/lib64/valgrind/amd64-linux/vgpreload_memcheck.so)
==30454== by 0x4E3DD78: _gfortrani_get_mem (memory.c:53)
==30454== by 0x400A5C: MAIN__ (alloc_comp_assign_3.f90:19)
==30454== by 0x40444B: main (fmain.c:22)
For alloc_comp_initializer_1.f90 the same.
--
Summary: Illegal read with gfortran.dg/alloc_comp_assign_2.f90
and *_3.f90
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: burnus at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31320