From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2153) id 050863858D3C; Sun, 21 Nov 2021 20:08:47 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 050863858D3C MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Jakub Jelinek To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-5442] fortran, debug: Fix up DW_AT_rank [PR103315] X-Act-Checkin: gcc X-Git-Author: Jakub Jelinek X-Git-Refname: refs/heads/master X-Git-Oldrev: 364539710f828851b9fac51c39033cd09aa620de X-Git-Newrev: da17c304e22ba256eba0b03710aa329115163b08 Message-Id: <20211121200847.050863858D3C@sourceware.org> Date: Sun, 21 Nov 2021 20:08:47 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Nov 2021 20:08:47 -0000 https://gcc.gnu.org/g:da17c304e22ba256eba0b03710aa329115163b08 commit r12-5442-gda17c304e22ba256eba0b03710aa329115163b08 Author: Jakub Jelinek Date: Sun Nov 21 21:08:04 2021 +0100 fortran, debug: Fix up DW_AT_rank [PR103315] For DW_AT_rank we were emitting .uleb128 0x4 # DW_AT_rank .byte 0x97 # DW_OP_push_object_address .byte 0x23 # DW_OP_plus_uconst .uleb128 0x1c .byte 0x6 # DW_OP_deref on 64-bit and .uleb128 0x4 # DW_AT_rank .byte 0x97 # DW_OP_push_object_address .byte 0x23 # DW_OP_plus_uconst .uleb128 0x10 .byte 0x6 # DW_OP_deref on 32-bit. I think this is wrong, as dtype.rank field in the descriptor has unsigned char type, not pointer type nor pointer sized integral. E.g. if we have a REAL :: a(..) dummy argument, which is passed as a reference to the function descriptor, we want to evaluate a->dtype.rank. The above DWARF expressions perform *(uintptr_t *)(a + 0x1c) and *(uintptr_t *)(a + 0x10) respectively. The following patch changes those to: .uleb128 0x5 # DW_AT_rank .byte 0x97 # DW_OP_push_object_address .byte 0x23 # DW_OP_plus_uconst .uleb128 0x1c .byte 0x94 # DW_OP_deref_size .byte 0x1 and .uleb128 0x5 # DW_AT_rank .byte 0x97 # DW_OP_push_object_address .byte 0x23 # DW_OP_plus_uconst .uleb128 0x10 .byte 0x94 # DW_OP_deref_size .byte 0x1 which perform *(unsigned char *)(a + 0x1c) and *(unsigned char *)(a + 0x10) respectively. 2021-11-21 Jakub Jelinek PR debug/103315 * trans-types.c (gfc_get_array_descr_info): Use DW_OP_deref_size 1 instead of DW_OP_deref for DW_AT_rank. Diff: --- gcc/fortran/trans-types.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/gcc/fortran/trans-types.c b/gcc/fortran/trans-types.c index e5d36d5a58f..eec4aa6f5fc 100644 --- a/gcc/fortran/trans-types.c +++ b/gcc/fortran/trans-types.c @@ -3459,8 +3459,8 @@ gfc_get_array_descr_info (const_tree type, struct array_descr_info *info) if (!integer_zerop (dtype_off)) t = fold_build_pointer_plus (t, rank_off); - t = build1 (NOP_EXPR, build_pointer_type (gfc_array_index_type), t); - t = build1 (INDIRECT_REF, gfc_array_index_type, t); + t = build1 (NOP_EXPR, build_pointer_type (TREE_TYPE (field)), t); + t = build1 (INDIRECT_REF, TREE_TYPE (field), t); info->rank = t; t = build0 (PLACEHOLDER_EXPR, TREE_TYPE (dim_off)); t = size_binop (MULT_EXPR, t, dim_size);