https://gcc.gnu.org/g:1ceda79ca5fe1a1a296624a98de8fd04958fbe55
commit r16-4571-g1ceda79ca5fe1a1a296624a98de8fd04958fbe55 Author: Richard Biener <[email protected]> Date: Thu Oct 23 10:54:48 2025 +0200 Fix possible segfault in load/store-lane analysis The following fixes a segfault that appeared with a patch applying additional permutes to a reduction SLP instance root. * tree-vect-loop.cc (vect_analyze_loop_2): Deal with NULL element in SLP_TREE_SCALAR_STMTS. Diff: --- gcc/tree-vect-loop.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index 9320bf8e878d..bc01e12f05bc 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -2598,7 +2598,7 @@ again: stmt_vec_info vinfo; vinfo = SLP_TREE_SCALAR_STMTS (SLP_INSTANCE_TREE (instance))[0]; - if (! STMT_VINFO_GROUPED_ACCESS (vinfo)) + if (!vinfo || !STMT_VINFO_GROUPED_ACCESS (vinfo)) continue; vinfo = DR_GROUP_FIRST_ELEMENT (vinfo); unsigned int size = DR_GROUP_SIZE (vinfo);
