On Wed, 31 Jan 2024, Jakub Jelinek wrote:
> Hi!
>
> This spot uses SCALAR_INT_TYPE_MODE which obviously ICEs for large/huge
> BITINT_TYPE types which have BLKmode. But such large BITINT_TYPEs certainly
> don't fit into DWARF2_ADDR_SIZE either, so we can just assume it would be
> false if type has BLKmode.
>
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
OK
> 2024-01-31 Jakub Jelinek <ja...@redhat.com>
>
> PR debug/113637
> * dwarf2out.cc (loc_list_from_tree_1): Assume integral types
> with BLKmode are larger than DWARF2_ADDR_SIZE.
>
> * gcc.dg/bitint-80.c: New test.
>
> --- gcc/dwarf2out.cc.jj 2024-01-24 13:11:21.132468150 +0100
> +++ gcc/dwarf2out.cc 2024-01-30 17:23:41.249054946 +0100
> @@ -19027,6 +19027,7 @@ loc_list_from_tree_1 (tree loc, int want
> && ! DECL_IGNORED_P (loc)
> && (INTEGRAL_TYPE_P (TREE_TYPE (loc))
> || POINTER_TYPE_P (TREE_TYPE (loc)))
> + && TYPE_MODE (TREE_TYPE (loc)) != BLKmode
> && (GET_MODE_SIZE (SCALAR_INT_TYPE_MODE (TREE_TYPE (loc)))
> <= DWARF2_ADDR_SIZE))
> {
> --- gcc/testsuite/gcc.dg/bitint-80.c.jj 2024-01-30 17:30:02.843696120
> +0100
> +++ gcc/testsuite/gcc.dg/bitint-80.c 2024-01-30 17:32:33.301583203 +0100
> @@ -0,0 +1,15 @@
> +/* PR debug/113637 */
> +/* { dg-do compile { target bitint } } */
> +/* { dg-options "-g -std=c23" } */
> +
> +#if __BITINT_MAXWIDTH__ >= 639
> +typedef _BitInt(639) B;
> +#else
> +typedef _BitInt(63) B;
> +#endif
> +
> +void
> +foo (B n)
> +{
> + extern void bar (int [][n]);
> +}
>
> Jakub
>
>
--
Richard Biener <rguent...@suse.de>
SUSE Software Solutions Germany GmbH,
Frankenstrasse 146, 90461 Nuernberg, Germany;
GF: Ivo Totev, Andrew McDonald, Werner Knoblich; (HRB 36809, AG Nuernberg)
