diff options
Diffstat (limited to 'gcc/tree-ssa-strlen.c')
| -rw-r--r-- | gcc/tree-ssa-strlen.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/gcc/tree-ssa-strlen.c b/gcc/tree-ssa-strlen.c index 1266f39..72f6a17 100644 --- a/gcc/tree-ssa-strlen.c +++ b/gcc/tree-ssa-strlen.c @@ -1856,8 +1856,33 @@ maybe_diag_stxncpy_trunc (gimple_stmt_iterator gsi, tree src, tree cnt) avoid the truncation warning. */ gsi_next_nondebug (&gsi); gimple *next_stmt = gsi_stmt (gsi); + if (!next_stmt) + { + /* When there is no statement in the same basic block check + the immediate successor block. */ + if (basic_block bb = gimple_bb (stmt)) + { + if (single_succ_p (bb)) + { + /* For simplicity, ignore blocks with multiple outgoing + edges for now and only consider successor blocks along + normal edges. */ + edge e = EDGE_SUCC (bb, 0); + if (!(e->flags & EDGE_ABNORMAL)) + { + gsi = gsi_start_bb (e->dest); + next_stmt = gsi_stmt (gsi); + if (next_stmt && is_gimple_debug (next_stmt)) + { + gsi_next_nondebug (&gsi); + next_stmt = gsi_stmt (gsi); + } + } + } + } + } - if (!gsi_end_p (gsi) && is_gimple_assign (next_stmt)) + if (next_stmt && is_gimple_assign (next_stmt)) { tree lhs = gimple_assign_lhs (next_stmt); tree_code code = TREE_CODE (lhs); |