Prepping a patch for dmd to correct some of the C++11 Correctness
issues.
I came across this set and am a bit hesitant to change it without
knowing side effects.
/home/huhlig/Temp/d/ldc/dmd2/struct.c:239:14: error: case value
evaluates to -1, which cannot be narrowed to type 'structalign_t'
(aka 'unsigned int')
[-Wc++11-narrowing]
case STRUCTALIGN_DEFAULT:
^
/home/huhlig/Temp/d/ldc/dmd2/mars.h:308:29: note: expanded from
macro 'STRUCTALIGN_DEFAULT'
#define STRUCTALIGN_DEFAULT ~0 // magic value means "match
whatever the underlying C compiler does"
void AggregateDeclaration::alignmember(
structalign_t alignment, // struct alignment that is in
effect
unsigned size, // alignment requirement of
field
unsigned *poffset)
{
//printf("alignment = %d, size = %d, offset =
%d\n",alignment,size,offset);
switch (alignment)
{
case 1:
// No alignment
break;
case STRUCTALIGN_DEFAULT:
{ /* Must match what the corresponding C compiler's
default
* alignment behavior is.
*/
assert(size != 3);
unsigned sa = (size == 0 || 8 < size) ? 8 : size;
*poffset = (*poffset + sa - 1) & ~(sa - 1);
break;
}
default:
// Align on alignment boundary, which must be a
positive power of 2
assert(alignment > 0 && !(alignment & (alignment -
1)));
*poffset = (*poffset + alignment - 1) & ~(alignment -
1);
break;
}
}
