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* [Bug translation/15397] New: c float function called from fortran gives wrong result
@ 2004-05-13 3:04 harald dot vogt at desy dot de
2004-05-13 4:39 ` [Bug fortran/15397] " bangerth at dealii dot org
` (13 more replies)
0 siblings, 14 replies; 18+ messages in thread
From: harald dot vogt at desy dot de @ 2004-05-13 3:04 UTC (permalink / raw)
To: gcc-bugs
This bug is specific for the x86_64 architecture. On 32 bit architectures it
does not occur.
[lx64 16:27] ~/test/cernlib/x86_64 > gcc -v -save-temps -O test1.f funct2.c
-lg2c -lfrtbegin
Reading specs from
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/specs
Configured with: /usr/src/packages/BUILD/gcc-3.4.0/configure
--prefix=/opt/products/gcc/3.4.0 --enable-shared --enable-cpp
--enable-threads=posix --enable-languages=c,c++,f77,java
--with-local-prefix=/opt/products/gcc/3.4.0
--with-gxx-include-dir=/opt/products/gcc/3.4.0/include/g++-3
Thread model: posix
gcc version 3.4.0
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/f771
test1.f -quiet -dumpbase test1.f -mtune=k8 -auxbase test1 -O -version -o test1.s
GNU F77 version 3.4.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 3.4.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
as -V -Qy -o test1.o test1.s
GNU assembler version 2.14.90.0.5 (x86_64-suse-linux) using BFD version
2.14.90.0.5 20030722 (SuSE Linux)
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/cc1
-E -quiet -v -iprefix
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/
funct2.c -mtune=k8 -O -o funct2.i
ignoring nonexistent directory
"/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../x86_64-unknown-linux-gnu/include"
ignoring duplicate directory
"/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/include"
ignoring nonexistent directory
"/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/include
/opt/products/gcc/3.4.0/include
/usr/include
End of search list.
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/cc1
-fpreprocessed funct2.i -quiet -dumpbase funct2.c -mtune=k8 -auxbase funct2 -O
-version -o funct2.s
GNU C version 3.4.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 3.4.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
as -V -Qy -o funct2.o funct2.s
GNU assembler version 2.14.90.0.5 (x86_64-suse-linux) using BFD version
2.14.90.0.5 20030722 (SuSE Linux)
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/collect2
--eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2
/usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/crtbegin.o
-L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0
-L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc
-L/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0
-L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../lib64
-L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../..
-L/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../lib64
-L/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../..
-L/lib/../lib64 -L/usr/lib/../lib64 test1.o funct2.o -lg2c -lfrtbegin -lgcc
-lgcc_eh -lc -lgcc -lgcc_eh
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/crtend.o
/usr/lib/../lib64/crtn.o
example code
test1.f:
program test
*
* error connected with return value from c routines
*
implicit none
*
real funct1, funct2, retval
integer funct3, iretval
* for calling a fortran function
retval = funct1 (1.1111)
print *, 'in test1: retval from fortran call is ', retval
retval = funct2 (1.1111)
print *, 'in test1: retval from c(float) call is ', retval
iretval = funct3 (2)
print *, 'in test1: retval from c(int) call is ', iretval
stop
end
real function funct1 ( inval )
implicit none
real inval, retval
retval = inval
print *, 'funct1: return value = ', retval
funct1 = retval
end
funct2.c:
float funct2_( float* value ) {
float retval = *value ;
printf ("funct2: return value = %f\n", retval);
return retval ;
}
int funct3_( int* value ) {
int retval = *value ;
printf ("funct2: return value = %d\n", retval);
return retval ;
}
Job output:
[lx64 16:45] ~/test/cernlib/x86_64 > ./a.out
funct1: return value = 1.11109996
in test1: retval from fortran call is 1.11109996
funct2: return value = 1.111100
in test1: retval from c(float) call is 0.
funct2: return value = 2
in test1: retval from c(int) call is 2
--
Summary: c float function called from fortran gives wrong result
Product: gcc
Version: 3.4.0
Status: UNCONFIRMED
Severity: critical
Priority: P1
Component: translation
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: harald dot vogt at desy dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: x86_64 GNU/Linux
GCC host triplet: x86_64 GNU/Linux
GCC target triplet: x86_64 GNU/Linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug fortran/15397] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
@ 2004-05-13 4:39 ` bangerth at dealii dot org
2004-05-13 10:53 ` pinskia at gcc dot gnu dot org
` (12 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: bangerth at dealii dot org @ 2004-05-13 4:39 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Component|translation |fortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug fortran/15397] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
2004-05-13 4:39 ` [Bug fortran/15397] " bangerth at dealii dot org
@ 2004-05-13 10:53 ` pinskia at gcc dot gnu dot org
2004-05-30 16:23 ` [Bug fortran/15397] [g77] " toon at moene dot indiv dot nluug dot nl
` (11 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-05-13 10:53 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|critical |normal
Keywords| |wrong-code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug fortran/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
2004-05-13 4:39 ` [Bug fortran/15397] " bangerth at dealii dot org
2004-05-13 10:53 ` pinskia at gcc dot gnu dot org
@ 2004-05-30 16:23 ` toon at moene dot indiv dot nluug dot nl
2004-06-03 23:37 ` [Bug target/15397] " pinskia at gcc dot gnu dot org
` (10 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: toon at moene dot indiv dot nluug dot nl @ 2004-05-30 16:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From toon at moene dot indiv dot nluug dot nl 2004-05-29 13:36 -------
This is a g77 problem.
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|c float function called from|[g77] c float function
|fortran gives wrong result |called from fortran gives
| |wrong result
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (2 preceding siblings ...)
2004-05-30 16:23 ` [Bug fortran/15397] [g77] " toon at moene dot indiv dot nluug dot nl
@ 2004-06-03 23:37 ` pinskia at gcc dot gnu dot org
2004-09-18 0:10 ` pinskia at gcc dot gnu dot org
` (9 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-06-03 23:37 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Component|fortran |target
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (3 preceding siblings ...)
2004-06-03 23:37 ` [Bug target/15397] " pinskia at gcc dot gnu dot org
@ 2004-09-18 0:10 ` pinskia at gcc dot gnu dot org
2004-10-07 9:34 ` giovannibajo at libero dot it
` (8 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-09-18 0:10 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-09-18 00:10 -------
*** Bug 17541 has been marked as a duplicate of this bug. ***
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |rkoenker at uiuc dot edu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (4 preceding siblings ...)
2004-09-18 0:10 ` pinskia at gcc dot gnu dot org
@ 2004-10-07 9:34 ` giovannibajo at libero dot it
2004-11-17 9:19 ` Thomas dot Koenig at online dot de
` (7 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: giovannibajo at libero dot it @ 2004-10-07 9:34 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-10-07 09:34 -------
Toon, can you confirm this bug as actual on the 3.4 branch? Is this a
regression? Can this be double-checked with gfortran on mainline?
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |toon at moene dot indiv dot
| |nluug dot nl, giovannibajo
| |at libero dot it
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (5 preceding siblings ...)
2004-10-07 9:34 ` giovannibajo at libero dot it
@ 2004-11-17 9:19 ` Thomas dot Koenig at online dot de
2004-11-23 8:54 ` harald dot vogt at desy dot de
` (6 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: Thomas dot Koenig at online dot de @ 2004-11-17 9:19 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From Thomas dot Koenig at online dot de 2004-11-17 09:18 -------
(In reply to comment #3)
I checked this with gcc-4.0-20041107 on a ia64, and the problem didn't occur:
$ gfortran -v
Reading specs from /home/zfkts/lib/gcc/ia64-unknown-linux-gnu/4.0.0/specs
Configured with: ../gcc-4.0-20041107/configure --prefix=/home/zfkts
--enable-languages=c,c++,f95
Thread model: posix
gcc version 4.0.0 20041107 (experimental)
$ gfortran -O test1.f funct2.c
funct2.c: In function 'funct2_':
funct2.c:3: warning: incompatible implicit declaration of built-in function 'printf'
funct2.c: In function 'funct3_':
funct2.c:8: warning: incompatible implicit declaration of built-in function 'printf'
$ ./a.out
funct1: return value = 1.111100
in test1: retval from fortran call is 1.111100
funct2: return value = 1.111100
in test1: retval from c(float) call is 1.111100
funct2: return value = 2
in test1: retval from c(int) call is 2
STOP 0
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (6 preceding siblings ...)
2004-11-17 9:19 ` Thomas dot Koenig at online dot de
@ 2004-11-23 8:54 ` harald dot vogt at desy dot de
2005-06-12 3:23 ` pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: harald dot vogt at desy dot de @ 2004-11-23 8:54 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From harald dot vogt at desy dot de 2004-11-23 08:53 -------
(In reply to comment #0)
> This bug is specific for the x86_64 architecture. On 32 bit architectures it
> does not occur.
>
>
> [lx64 16:27] ~/test/cernlib/x86_64 > gcc -v -save-temps -O test1.f funct2.c
> -lg2c -lfrtbegin
> Reading specs from
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/specs
> Configured with: /usr/src/packages/BUILD/gcc-3.4.0/configure
> --prefix=/opt/products/gcc/3.4.0 --enable-shared --enable-cpp
> --enable-threads=posix --enable-languages=c,c++,f77,java
> --with-local-prefix=/opt/products/gcc/3.4.0
> --with-gxx-include-dir=/opt/products/gcc/3.4.0/include/g++-3
> Thread model: posix
> gcc version 3.4.0
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/f771
> test1.f -quiet -dumpbase test1.f -mtune=k8 -auxbase test1 -O -version -o test1.s
> GNU F77 version 3.4.0 (x86_64-unknown-linux-gnu)
> compiled by GNU C version 3.4.0.
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
> as -V -Qy -o test1.o test1.s
> GNU assembler version 2.14.90.0.5 (x86_64-suse-linux) using BFD version
> 2.14.90.0.5 20030722 (SuSE Linux)
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/cc1
> -E -quiet -v -iprefix
> /afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/
> funct2.c -mtune=k8 -O -o funct2.i
> ignoring nonexistent directory
>
"/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../x86_64-unknown-linux-gnu/include"
> ignoring duplicate directory
> "/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/include"
> ignoring nonexistent directory
>
"/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../x86_64-unknown-linux-gnu/include"
> #include "..." search starts here:
> #include <...> search starts here:
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/include
> /opt/products/gcc/3.4.0/include
> /usr/include
> End of search list.
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/cc1
> -fpreprocessed funct2.i -quiet -dumpbase funct2.c -mtune=k8 -auxbase funct2 -O
> -version -o funct2.s
> GNU C version 3.4.0 (x86_64-unknown-linux-gnu)
> compiled by GNU C version 3.4.0.
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
> as -V -Qy -o funct2.o funct2.s
> GNU assembler version 2.14.90.0.5 (x86_64-suse-linux) using BFD version
> 2.14.90.0.5 20030722 (SuSE Linux)
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../libexec/gcc/x86_64-unknown-linux-gnu/3.4.0/collect2
> --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2
> /usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/crtbegin.o
>
-L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0
> -L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc
> -L/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0
>
-L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../lib64
>
-L/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../..
> -L/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../../../lib64
> -L/opt/products/gcc/3.4.0/lib/gcc/x86_64-unknown-linux-gnu/3.4.0/../../..
> -L/lib/../lib64 -L/usr/lib/../lib64 test1.o funct2.o -lg2c -lfrtbegin -lgcc
> -lgcc_eh -lc -lgcc -lgcc_eh
>
/afs/ifh.de/@sys/products/gcc/3.4.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/3.4.0/crtend.o
> /usr/lib/../lib64/crtn.o
>
> example code
>
> test1.f:
>
> program test
> *
> * error connected with return value from c routines
> *
> implicit none
> *
> real funct1, funct2, retval
> integer funct3, iretval
>
> * for calling a fortran function
> retval = funct1 (1.1111)
> print *, 'in test1: retval from fortran call is ', retval
> retval = funct2 (1.1111)
> print *, 'in test1: retval from c(float) call is ', retval
> iretval = funct3 (2)
> print *, 'in test1: retval from c(int) call is ', iretval
> stop
>
> end
>
> real function funct1 ( inval )
>
> implicit none
>
> real inval, retval
>
> retval = inval
> print *, 'funct1: return value = ', retval
> funct1 = retval
>
> end
>
> funct2.c:
>
> float funct2_( float* value ) {
> float retval = *value ;
> printf ("funct2: return value = %f\n", retval);
> return retval ;
> }
> int funct3_( int* value ) {
> int retval = *value ;
> printf ("funct2: return value = %d\n", retval);
> return retval ;
> }
>
> Job output:
> [lx64 16:45] ~/test/cernlib/x86_64 > ./a.out
> funct1: return value = 1.11109996
> in test1: retval from fortran call is 1.11109996
> funct2: return value = 1.111100
> in test1: retval from c(float) call is 0.
> funct2: return value = 2
> in test1: retval from c(int) call is 2
(In reply to comment #4)
> (In reply to comment #3)
>
> I checked this with gcc-4.0-20041107 on a ia64, and the problem didn't occur:
>
> $ gfortran -v
> Reading specs from /home/zfkts/lib/gcc/ia64-unknown-linux-gnu/4.0.0/specs
> Configured with: ../gcc-4.0-20041107/configure --prefix=/home/zfkts
> --enable-languages=c,c++,f95
> Thread model: posix
> gcc version 4.0.0 20041107 (experimental)
> $ gfortran -O test1.f funct2.c
> funct2.c: In function 'funct2_':
> funct2.c:3: warning: incompatible implicit declaration of built-in function
'printf'
> funct2.c: In function 'funct3_':
> funct2.c:8: warning: incompatible implicit declaration of built-in function
'printf'
> $ ./a.out
> funct1: return value = 1.111100
> in test1: retval from fortran call is 1.111100
> funct2: return value = 1.111100
> in test1: retval from c(float) call is 1.111100
> funct2: return value = 2
> in test1: retval from c(int) call is 2
> STOP 0
May be the following may give a hint to the g77 developers:
if using the -fno-f2c compile option the error does not occur on AMD64
architectures.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (7 preceding siblings ...)
2004-11-23 8:54 ` harald dot vogt at desy dot de
@ 2005-06-12 3:23 ` pinskia at gcc dot gnu dot org
2005-06-12 15:09 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-06-12 3:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-06-12 03:23 -------
(In reply to comment #5)
> May be the following may give a hint to the g77 developers:
> if using the -fno-f2c compile option the error does not occur on AMD64
> architectures.
That means the ABI is different with those two.
I don't think this is a bug.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (8 preceding siblings ...)
2005-06-12 3:23 ` pinskia at gcc dot gnu dot org
@ 2005-06-12 15:09 ` pinskia at gcc dot gnu dot org
2005-07-06 19:22 ` gnu at the-meissners dot org
` (3 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-06-12 15:09 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
GCC build triplet|x86_64 GNU/Linux |
GCC host triplet|x86_64 GNU/Linux |
GCC target triplet|x86_64 GNU/Linux |x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (9 preceding siblings ...)
2005-06-12 15:09 ` pinskia at gcc dot gnu dot org
@ 2005-07-06 19:22 ` gnu at the-meissners dot org
2005-07-13 13:17 ` [Bug target/15397] [3.4 only] " pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
13 siblings, 0 replies; 18+ messages in thread
From: gnu at the-meissners dot org @ 2005-07-06 19:22 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From gnu at the-meissners dot org 2005-07-06 19:22 -------
FWIW, I tried this with the 4.0 compiler on an AMD64 system, and it doesn't fail
with gfortran.
I did bring over the 3.4.4 release, and tried it with g77, and it failed as
reported. It passed if I used -m32 with the traditional x86 calling sequence.
If I link the 3.4.4 fortran object with the 4.0.0 C object, it fails. If I link
the 4.0.0 fortran with the 3.4.4 C object, it passes.
Looking at the code for -O1, between 3.4.4 and 4.0.0, I see, the 4.0.0 generates:
call funct2_
movss %xmm0, 12(%rsp)
and the 3.4.4 fortran generates:
call funct2_
cvtsd2ss %xmm0, %xmm0
movss %xmm0, 16(%rsp)
Ie, g77 is expecting float values to be returned as a double, and then doing the
conversion.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [3.4 only] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (10 preceding siblings ...)
2005-07-06 19:22 ` gnu at the-meissners dot org
@ 2005-07-13 13:17 ` pinskia at gcc dot gnu dot org
2005-09-08 15:34 ` harald dot vogt at desy dot de
2005-09-22 14:17 ` kmccarty at princeton dot edu
13 siblings, 0 replies; 18+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-13 13:17 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|[g77] c float function |[3.4 only] [g77] c float
|called from fortran gives |function called from fortran
|wrong result |gives wrong result
Target Milestone|--- |3.4.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [3.4 only] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (11 preceding siblings ...)
2005-07-13 13:17 ` [Bug target/15397] [3.4 only] " pinskia at gcc dot gnu dot org
@ 2005-09-08 15:34 ` harald dot vogt at desy dot de
2005-09-22 14:17 ` kmccarty at princeton dot edu
13 siblings, 0 replies; 18+ messages in thread
From: harald dot vogt at desy dot de @ 2005-09-08 15:34 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From harald dot vogt at desy dot de 2005-09-08 15:34 -------
(In reply to comment #7)
gfortran has changed the default!
Looking in the gfortran manual the -fno-f2c is now the default and -ff2c will
switch back to the g77 default. Therefore gfortran gives a correct result. Can
you check the code with "gfortran -ff2c"?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [3.4 only] [g77] c float function called from fortran gives wrong result
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
` (12 preceding siblings ...)
2005-09-08 15:34 ` harald dot vogt at desy dot de
@ 2005-09-22 14:17 ` kmccarty at princeton dot edu
13 siblings, 0 replies; 18+ messages in thread
From: kmccarty at princeton dot edu @ 2005-09-22 14:17 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From kmccarty at princeton dot edu 2005-09-22 14:17 -------
Could anyone find out whether this g77 bug applies to other 64-bit Linux
architectures as well as AMD64? I'm thinking of Alpha, Itanium, S390x, and
64-bit PowerPC and SPARC. Thanks in advance for any such information,
especially on the first two of these.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |kmccarty at princeton dot
| |edu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [3.4 only] [g77] c float function called from fortran gives wrong result
[not found] <bug-15397-4@http.gcc.gnu.org/bugzilla/>
@ 2014-02-16 13:13 ` jackie.rosen at hushmail dot com
0 siblings, 0 replies; 18+ messages in thread
From: jackie.rosen at hushmail dot com @ 2014-02-16 13:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
Jackie Rosen <jackie.rosen at hushmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jackie.rosen at hushmail dot com
--- Comment #11 from Jackie Rosen <jackie.rosen at hushmail dot com> ---
*** Bug 260998 has been marked as a duplicate of this bug. ***
Seen from the domain http://volichat.com
Page where seen: http://volichat.com/adult-chat-rooms
Marked for reference. Resolved as fixed @bugzilla.
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [3.4 only] [g77] c float function called from fortran gives wrong result
[not found] <bug-15397-8520@http.gcc.gnu.org/bugzilla/>
2005-10-07 3:21 ` gdr at gcc dot gnu dot org
@ 2006-02-28 9:24 ` gdr at gcc dot gnu dot org
1 sibling, 0 replies; 18+ messages in thread
From: gdr at gcc dot gnu dot org @ 2006-02-28 9:24 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from gdr at gcc dot gnu dot org 2006-02-28 09:23 -------
won't fix for 3.4.6.
--
gdr at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |WONTFIX
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
* [Bug target/15397] [3.4 only] [g77] c float function called from fortran gives wrong result
[not found] <bug-15397-8520@http.gcc.gnu.org/bugzilla/>
@ 2005-10-07 3:21 ` gdr at gcc dot gnu dot org
2006-02-28 9:24 ` gdr at gcc dot gnu dot org
1 sibling, 0 replies; 18+ messages in thread
From: gdr at gcc dot gnu dot org @ 2005-10-07 3:21 UTC (permalink / raw)
To: gcc-bugs
--
gdr at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.4.5 |3.4.6
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15397
^ permalink raw reply [flat|nested] 18+ messages in thread
end of thread, other threads:[~2014-02-16 13:13 UTC | newest]
Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-05-13 3:04 [Bug translation/15397] New: c float function called from fortran gives wrong result harald dot vogt at desy dot de
2004-05-13 4:39 ` [Bug fortran/15397] " bangerth at dealii dot org
2004-05-13 10:53 ` pinskia at gcc dot gnu dot org
2004-05-30 16:23 ` [Bug fortran/15397] [g77] " toon at moene dot indiv dot nluug dot nl
2004-06-03 23:37 ` [Bug target/15397] " pinskia at gcc dot gnu dot org
2004-09-18 0:10 ` pinskia at gcc dot gnu dot org
2004-10-07 9:34 ` giovannibajo at libero dot it
2004-11-17 9:19 ` Thomas dot Koenig at online dot de
2004-11-23 8:54 ` harald dot vogt at desy dot de
2005-06-12 3:23 ` pinskia at gcc dot gnu dot org
2005-06-12 15:09 ` pinskia at gcc dot gnu dot org
2005-07-06 19:22 ` gnu at the-meissners dot org
2005-07-13 13:17 ` [Bug target/15397] [3.4 only] " pinskia at gcc dot gnu dot org
2005-09-08 15:34 ` harald dot vogt at desy dot de
2005-09-22 14:17 ` kmccarty at princeton dot edu
[not found] <bug-15397-8520@http.gcc.gnu.org/bugzilla/>
2005-10-07 3:21 ` gdr at gcc dot gnu dot org
2006-02-28 9:24 ` gdr at gcc dot gnu dot org
[not found] <bug-15397-4@http.gcc.gnu.org/bugzilla/>
2014-02-16 13:13 ` jackie.rosen at hushmail dot com
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