------- Comment #5 from dominiq at lps dot ens dot fr 2007-03-15 08:34 -------
> Can you check if the attached patch gives a more reasonable error?
I now get:
failure_v2.c: In function 'main':
failure_v2.c:15: sorry, unimplemented: no way to expand a call to 'cexpi'
but would not it be more natural to get the behavior I see with gcc version
4.2.0 20070221?
/usr/bin/ld: Undefined symbols:
___builtin_cexpi
collect2: ld returned 1 exit status
Now from this, am I right to conclude that TARGET_C99_FUNCTIONS is not set in
my build?
If yes, how does it come that g++ and gfortran use __builtin_cexpi when a code
use
cos(phi) and sin(phi) with -O1:
;; Function int main() (main)
Analyzing Edge Insertions.
int main() ()
{
complex double sincostmp.18;
<bb 2>:
sincostmp.18 = __builtin_cexpi (IMAGPART_EXPR <__builtin_clog (__complex__
(-1.0e+0, 0.0))> * 5.0e-1);
printf (&"%g %g\n"[0], REALPART_EXPR <sincostmp.18>, IMAGPART_EXPR
<sincostmp.18>);
return 0;
}
where __builtin_cexpi seems to be used and returning a wrong result, thus
leading to PR30980?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31161
