| Issue |
166866
|
| Summary |
Initialization of union not raise expected FPU flag
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
tydeman
|
#include <assert.h>
#include <limits.h>
#include <errno.h>
#include <stdio.h>
#include <float.h>
#include <fenv.h>
#include <complex.h>
#include <math.h> /* glibc 2.41-11 */
#pragma STDC FENV_ACCESS ON
#pragma STDC FP_CONTRACT OFF
#pragma STDC FENV_ROUND FE_TONEAREST
#pragma STDC FENV_DEC_ROUND FE_DEC_TONEAREST
#pragma STDC CX_LIMITED_RANGE OFF
int main(void){
feclearexcept(FE_ALL_EXCEPT);
errno = 0;
if(1){
union { float f32; int i; } uf0 = { 0.F / 0.F };
int flags;
flags = fetestexcept(FE_ALL_EXCEPT);
assert( 0 == errno );
assert( isnan( uf0.f32 ) );
assert( 0 != flags ); /* fails here */
assert( FE_INVALID == flags );
}
return 0;
}
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