diff options
Diffstat (limited to 'gcc/tree-eh.c')
| -rw-r--r-- | gcc/tree-eh.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c index 8a99ad3..270d76d 100644 --- a/gcc/tree-eh.c +++ b/gcc/tree-eh.c @@ -3670,6 +3670,8 @@ cleanup_empty_eh_unsplit (basic_block bb, edge e_out, eh_landing_pad lp) { gimple_stmt_iterator gsi; tree lab; + edge_iterator ei; + edge e; /* We really ought not have totally lost everything following a landing pad label. Given that BB is empty, there had better @@ -3692,6 +3694,22 @@ cleanup_empty_eh_unsplit (basic_block bb, edge e_out, eh_landing_pad lp) return false; } + /* The destination block must not be a regular successor for any + of the preds of the landing pad. Thus, avoid turning + <..> + | \ EH + | <..> + | / + <..> + into + <..> + | | EH + <..> + which CFG verification would choke on. See PR45172. */ + FOR_EACH_EDGE (e, ei, bb->preds) + if (find_edge (e->src, e_out->dest)) + return false; + /* Attempt to move the PHIs into the successor block. */ if (cleanup_empty_eh_merge_phis (e_out->dest, bb, e_out, false)) { |