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Fix segfault on verify_dominators error path 

* dominance.c (verify_dominators): Don't segfault on NULL imm_bb.

From-SVN: r236845
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Alan Modra 2016-05-28 18:46:00 +09:30 committed by Alan Modra
parent cdfa2b24d2
commit bcfbf25770
2 changed files with 5 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
2016-05-28 Alan Modra <amodra@gmail.com>
* dominance.c (verify_dominators): Don't segfault on NULL imm_bb.
2016-05-28 Alan Modra <amodra@gmail.com>
PR rtl-optimization/71275

1
gcc/dominance.c
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@ -1024,6 +1024,7 @@ verify_dominators (cdi_direction dir)
{
error ("dominator of %d status unknown", bb->index);
err = true;
continue;
}
basic_block imm_bb_correct = di.get_idom (bb);