https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81120
Bug ID: 81120
Summary: __builtin_nansl ("") generates quiet NaN
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa-unknown-linux-gnu
Target: hppa-unknown-linux-gnu
Build: hppa-unknown-linux-gnu
The following code fails because __builtin_nansl generates a quiet NaN:
extern int __issignaling (double);
int
main (void)
{
double sNaN = __builtin_nansl ("");
if (!__issignaling(sNaN))
return 1;
return 0;
}
.LC0:
.word 2146959359
.word -1
(gdb) p/x 2146959359
$1 = 0x7ff7ffff
This is a quiet NaN on PA-RISC.
__builtin_nans() correctly generates a signaling NaN.
long double and double are the same on hppa-linux.
The problem causes several glibc testsuite failures.
