http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56082
Bug #: 56082
Summary: FAIL: gfortran.dg/bind_c_bool_1.f90 -O (test for
errors, line 18) on powerpc-apple-darwin9 with -m32
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: domi...@lps.ens.fr
CC: bur...@net-b.de, ia...@gcc.gnu.org,
mikest...@comcast.net
Host: powerpc-apple-darwin9
Target: powerpc-apple-darwin9
Build: powerpc-apple-darwin9
The test gfortran.dg/bind_c_bool_1.f90 fails on powerpc-apple-darwin9 with -m32
(but not with -m64). From
http://gcc.gnu.org/onlinedocs/gcc/Darwin-Options.html#Darwin-Options
-mone-byte-bool
Override the defaults for `bool' so that `sizeof(bool)==1'. By default
`sizeof(bool)' is `4' when compiling for Darwin/PowerPC and `1' when compiling
for Darwin/x86, so this option has no effect on x86.
As shown by the following test
[karma] f90/bug% cat c_bool.f90
use iso_c_binding; print *, C_Bool; end
[karma] f90/bug% gfc c_bool.f90
[karma] f90/bug% a.out
4
[karma] f90/bug% gfc c_bool.f90 -m64
[karma] f90/bug% a.out
1
[karma] f90/bug%
C_Bool is 4 for Darwin/PowerPC (32 bit mode) and the test
! { dg-do compile }
subroutine sub(x) bind(C) ! { dg-error "GNU Extension: LOGICAL dummy argument
'x' at .1. with non-C_Bool kind in BIND.C. procedure 'sub'" }
logical(kind=4) :: x
end subroutine sub
does not give any error even with -std=f2003.
I can think of at least 3 ways to fix the test:
(a) XFAIL the test.
--- /opt/gcc/_gcc_clean/gcc/testsuite/gfortran.dg/bind_c_bool_1.f90
2013-01-13 07:07:14.000000000 +0100
+++ /opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_bool_1_a.f90 2013-01-23
14:44:33.000000000 +0100
@@ -16,7 +16,7 @@ end function sub4
subroutine sub(x) bind(C) ! { dg-error "GNU Extension: LOGICAL dummy argument
'x' at .1. with non-C_Bool kind in BIND.C. procedure 'sub'" }
- logical(kind=4) :: x
+ logical(kind=2) :: x
end subroutine sub
subroutine sub3(y) bind(C)
(b) Use logical(kind=2), hoping that there is no targer with C_Bool==2.
--- /opt/gcc/_gcc_clean/gcc/testsuite/gfortran.dg/bind_c_bool_1.f90
2013-01-13 07:07:14.000000000 +0100
+++ /opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_bool_1_b.f90 2013-01-23
14:52:45.000000000 +0100
@@ -15,7 +15,7 @@ function sub4() bind(C) result(res) ! {
end function sub4
-subroutine sub(x) bind(C) ! { dg-error "GNU Extension: LOGICAL dummy argument
'x' at .1. with non-C_Bool kind in BIND.C. procedure 'sub'" }
+subroutine sub(x) bind(C) ! { dg-error "GNU Extension: LOGICAL dummy argument
'x' at .1. with non-C_Bool kind in BIND.C. procedure 'sub'" "" { xfail {
powerpc*-apple-darwin* && { ! lp64 } } } }
logical(kind=4) :: x
end subroutine sub
(c) Use the following patch
--- /opt/gcc/_gcc_clean/gcc/testsuite/gfortran.dg/bind_c_bool_1.f90
2013-01-13 07:07:14.000000000 +0100
+++ /opt/gcc/work/gcc/testsuite/gfortran.dg/bind_c_bool_1.f90 2013-01-21
19:50:29.000000000 +0100
@@ -1,5 +1,6 @@
! { dg-do compile }
! { dg-options "-std=f2003" }
+! { dg-additional-options "-mone-byte-bool" { target { powerpc*-apple-darwin*
&& { ! lp64 } } } }
!
! PR fortran/55758
!
What is the best one? or is there a better one?
