--- Comment #3 from dickinsm at gmail dot com 2010-06-26 18:26 ---
Apologies; I seem to have messed up the original bug report, by accidentally
pasting a slightly edited version of the original bug file. The minimal
test-case is as follows:
#include
#include
int copysign_bug
--- Comment #2 from dickinsm at gmail dot com 2010-06-26 18:16 ---
I'm also seeing this bug in gcc 4.5.0 on OS X, and it's been independently
confirmed in gcc 4.4.3 on Fedora 12 (see http://bugs.python.org/issue9069).
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44683
--- Comment #1 from dickinsm at gmail dot com 2010-06-26 17:01 ---
Created an attachment (id=21012)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21012&action=view)
Preprocessed source file
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44683
-lgcc_eh
/usr/local/lib/gcc/i386-pc-solaris2.11/4.4.4/amd64/crtend.o
/usr/lib/amd64/crtn.o
ld: Software Generation Utilities - Solaris Link Editors: 5.11-1.1689
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Summary: Optimization bug with copysign builtin
Product: gcc
Version: 4.4.4
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dickinsm at gmail dot com
GCC build triplet: i386-pc-solaris2.11
GCC host triplet: i386-pc-solaris2.11
GCC target triplet: i386-pc-solaris2.11
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44683
--- Comment #5 from dickinsm at gmail dot com 2009-08-29 07:05 ---
A quick note for anyone else who comes across this: this libm bug is fixed in
Snow Leopard (darwin 10).
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37714
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dickinsm at gmail dot com
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40143
--- Comment #4 from dickinsm at gmail dot com 2008-10-02 15:53 ---
Makes sense. Thanks for the explanation.
I'll go and file a bug with Apple.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37714
--- Comment #2 from dickinsm at gmail dot com 2008-10-02 14:34 ---
Thanks for the response!
It does appear to be true that cexp doesn't follow
Annex G of C99, on OS X 10.5.5. I agree that this
is undesirable, but I can't see why it should
be considered a bug.
Annex G of C99
double gamma ( double );
extern int matherr ( struct exception * );
extern double significand ( double );
extern double drem ( double, double );
# 29 "/usr/include/math.h" 2 3 4
# 3 "main.c" 2
typedef struct {
double real;
double imag;
} my_complex;
static my_comple
