http://sourceware.org/bugzilla/show_bug.cgi?id=12557
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #31 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-02
10:36:33 UTC ---
Simple testcase
double x;
int main()
{
return x*x*x*x;
}
> gcc-4.6 -o t t.o -O -ffast-math -flto
> gcc-4.6 -o t t.o -flto
/tmp/ccIqK5i6.ltrans0.ltrans.o: In function `main':
ccIqK5i6.ltrans0.o:(.text+0x19): undefined reference to `pow'
collect2: ld returned 1 exit status
> gcc-4.6 -o t t.o -flto -lm
> gcc-4.6 -o t t.o -flto -Wl,--as-needed -lm
which works for me with the 2.21.1 release.
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