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-rw-r--r--Python/flowgraph.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/Python/flowgraph.c b/Python/flowgraph.c
index 69d7e0a..3888629 100644
--- a/Python/flowgraph.c
+++ b/Python/flowgraph.c
@@ -1001,13 +1001,14 @@ remove_unreachable(basicblock *entryblock) {
basicblock **sp = stack;
entryblock->b_predecessors = 1;
*sp++ = entryblock;
+ entryblock->b_visited = 1;
while (sp > stack) {
basicblock *b = *(--sp);
- b->b_visited = 1;
if (b->b_next && BB_HAS_FALLTHROUGH(b)) {
if (!b->b_next->b_visited) {
assert(b->b_next->b_predecessors == 0);
*sp++ = b->b_next;
+ b->b_next->b_visited = 1;
}
b->b_next->b_predecessors++;
}
@@ -1017,8 +1018,8 @@ remove_unreachable(basicblock *entryblock) {
if (is_jump(instr) || is_block_push(instr)) {
target = instr->i_target;
if (!target->b_visited) {
- assert(target->b_predecessors == 0 || target == b->b_next);
*sp++ = target;
+ target->b_visited = 1;
}
target->b_predecessors++;
}