This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug c++/48026] New: #pragma optimize ignored for C++
- From: "sam at robots dot org.uk" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 7 Mar 2011 19:44:08 +0000
- Subject: [Bug c++/48026] New: #pragma optimize ignored for C++
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48026
Summary: #pragma optimize ignored for C++
Product: gcc
Version: 4.5.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: sam@robots.org.uk
#pragma optimize seems to be ignored for C++.
=== Makefile ===
all: opt_c.s opt_cxx.s
.PHONY: all
opt_c.s: opt.c
gcc -S -o $@ -O2 $<
opt_cxx.s: opt.c
g++ -S -o $@ -O2 $<
clean:
rm -f *.s
.PHONY: clean
=== opt.c ===
#pragma GCC optimize ("O0")
#ifdef __OPTIMIZE__
#error help!
#endif
int main () {
int i;
for (i = 0; i < 2000000000; ++i)
;
}
=== test output ===
$ make -k
gcc -S -o opt_c.s -O2 opt.c
g++ -S -o opt_cxx.s -O2 opt.c
opt.c:4:2: error: #error help!
make: *** [opt_cxx.s] Error 1
make: Target `all' not remade because of errors.