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Diffstat (limited to 'gcc/tree-ssa-threadedge.c')
| -rw-r--r-- | gcc/tree-ssa-threadedge.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/tree-ssa-threadedge.c b/gcc/tree-ssa-threadedge.c index 0b1f973..330ba15 100644 --- a/gcc/tree-ssa-threadedge.c +++ b/gcc/tree-ssa-threadedge.c @@ -981,7 +981,8 @@ thread_around_empty_blocks (edge taken_edge, else taken_edge = find_taken_edge (bb, cond); - if ((taken_edge->flags & EDGE_DFS_BACK) != 0) + if (!taken_edge + || (taken_edge->flags & EDGE_DFS_BACK) != 0) return false; if (bitmap_bit_p (visited, taken_edge->dest->index)) |