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re PR target/92669 (ICE in pre_and_rev_post_order_compute_fn at gcc/cfganal.c:1034 since r278666)

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2019-11-26  Richard Biener  <rguenther@suse.de>

	PR middle-end/92669
	* cfganal.c (pre_and_rev_post_order_compute_fn): Deal with
	NULL pre_order.

From-SVN: r278723
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Richard Biener 2019-11-26 12:03:58 +00:00 committed by Richard Biener
parent 4abc46b51a
commit 1e89ab6ce5
2 changed files with 8 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-11-26 Richard Biener <rguenther@suse.de>
PR middle-end/92669
* cfganal.c (pre_and_rev_post_order_compute_fn): Deal with
NULL pre_order.
2019-11-26 Robin Dapp <rdapp@linux.ibm.com>
* config/s390/linux.h: Add undef for MUSL_DYNAMIC_LINKERxx.

2
gcc/cfganal.c
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@ -1030,6 +1030,8 @@ pre_and_rev_post_order_compute_fn (struct function *fn,
}
/* Clear the temporarily allocated flag. */
if (!rev_post_order)
rev_post_order = pre_order;
for (int i = 0; i < pre_order_num; ++i)
BASIC_BLOCK_FOR_FN (fn, rev_post_order[i])->flags &= ~visited;