https://gcc.gnu.org/g:020abf25ff799b8070c41448d88959b573397583
commit 020abf25ff799b8070c41448d88959b573397583 Author: Sandra Loosemore <[email protected]> Date: Thu Jul 2 18:10:40 2026 +0000 OpenMP: Fix ICE in libgomp testcase declare-mapper-10.f90 This fix was originally included in OG15 commit 4c4064a5736d ("OpenMP/Fortran: Map intermediate array descriptors [PR120505]"), but not in the mainline version of that patch. It's necessary to avoid a null pointer dereference in the libgomp testcase declare-mapper-10.f90. gcc/ChangeLog * gimplify.cc (omp_build_struct_sibling_lists): Avoid null pointer dereference from trying to move nodes that aren't associated with the base object. Co-authored-by: Paul-Antoine Arras <[email protected]> Diff: --- gcc/gimplify.cc | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/gcc/gimplify.cc b/gcc/gimplify.cc index 80ac032d9bd1..3d904f5fdd0e 100644 --- a/gcc/gimplify.cc +++ b/gcc/gimplify.cc @@ -13964,7 +13964,9 @@ omp_build_struct_sibling_lists (enum tree_code code, gcc_assert (TREE_CODE (base) == NOP_EXPR); base = build_fold_indirect_ref (base); tree *struct_node = struct_map_to_clause->get (base); - omp_siblist_move_node_after (c, cp, &OMP_CLAUSE_CHAIN (*struct_node)); + if (struct_node) + omp_siblist_move_node_after (c, cp, + &OMP_CLAUSE_CHAIN (*struct_node)); } }
