Attachment #132806 for bug #194975

Lines 525-531 start_record_layout (tree t) Link Here

(-)gcc/stor-layout.c (-1 / +9 lines)
525	#ifdef STRUCTURE_SIZE_BOUNDARY	525	#ifdef STRUCTURE_SIZE_BOUNDARY
526	/* Packed structures don't need to have minimum size. */	526	/* Packed structures don't need to have minimum size. */
527	if (! TYPE_PACKED (t))	527	if (! TYPE_PACKED (t))
528	rli->record_align = MAX (rli->record_align, (unsigned) STRUCTURE_SIZE_BOUNDARY);	528	{
		529	unsigned tmp;
		530
		531	/* #pragma pack overrides STRUCTURE_SIZE_BOUNDARY. */
		532	tmp = (unsigned) STRUCTURE_SIZE_BOUNDARY;
		533	if (maximum_field_alignment != 0)
		534	tmp = MIN (tmp, maximum_field_alignment);
		535	rli->record_align = MAX (rli->record_align, tmp);
		536	}
529	#endif	537	#endif
530		538
531	rli->offset = size_zero_node;	539	rli->offset = size_zero_node;

Line 0 Link Here

(-)gcc/testsuite/gcc.dg/pragma-pack-4.c (+10 lines)
	1	/* Check that pragma pack overrides STRUCTURE_SIZE_BOUNDARY. */
	2	/* { dg-do compile } */
	3
	4	#pragma pack(1)
	5	struct S
	6	{
	7	char a;
	8	};
	9
	10	int test[sizeof(struct S) == 1 ? 1: -1];

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