https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68887
Bug ID: 68887
Summary: [6 regression] gfortran.dg/coarray/event_[12].f90
-fcoarray=lib -O2 -lcaf_single -latomic fails
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: ebotcazou at gcc dot gnu.org
Target Milestone: ---
The tests fail both on SPARC/Solaris and SPARC64/Solaris:
FAIL: gfortran.dg/coarray/event_1.f90 -fcoarray=lib -O2 -lcaf_single -latomic
execution test
FAIL: gfortran.dg/coarray/event_2.f90 -fcoarray=lib -O2 -lcaf_single -latomic
execution test
Reduced testcase:
use iso_fortran_env, only: event_type
implicit none
type(event_type), save :: var[*]
integer :: count, stat
count = -42
call event_query (var, count)
if (count /= 0) call abort()
end
The reduced testcase passes on x86-64/Linux but valgrind complains:
eric@polaris:~/build/gcc/native> valgrind ./event_1 ==30564== Memcheck, a
memory error detector
==30564== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==30564== Using Valgrind-3.10.0 and LibVEX; rerun with -h for copyright info
==30564== Command: ./event_1
==30564==
==30564== Invalid read of size 4
==30564== at 0x402E50: _gfortran_caf_event_query (single.c:1110)
==30564== by 0x40156C: MAIN__ (in /home/eric/build/gcc/native/event_1)
==30564== by 0x4015C7: main (in /home/eric/build/gcc/native/event_1)
==30564== Address 0x6072340 is 0 bytes inside a block of size 1 alloc'd
==30564== at 0x4C2B200: calloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==30564== by 0x4016E1: _gfortran_caf_register (single.c:106)
==30564== by 0x401526: _caf_init.1.3446 (in
/home/eric/build/gcc/native/event_1)
==30564== by 0x40312C: __libc_csu_init (elf-init.c:88)
==30564== by 0x5ACCA94: (below main) (in /lib64/libc-2.19.so)
