Ubuntu
gcc-4.6 package

  1. Bug #841825
  2. Comment #8

Comment 8 for bug 841825

Revision history for this message
In , Jakub-gcc (jakub-gcc) wrote :

We have:
<bb 4>:
# DEBUG this => this_2(D)
reason_15 = reason_10(D);
reason_17 = reason_15;
# DEBUG reason => reason_17
D.137092_16 = &this_2(D)->D.122214;
mozilla::net::PWyciwygChannelChild::Send__delete__ (D.137092_16);
D.132395_6 = 0;

and ccp (substitute_and_fold called from ccp_finalize) decides (because has_zero_uses is true for reason_17) to remove reason_17 = reason_15; stmt first, which during gsi_remove adds a # DEBUG D#xxx => reason_15 stmt.
Then reason_15 = reason_10(D); is being removed, but for some reason the newly added debug stmt isn't found during FOR_EACH_IMM_USE_FAST for reason_15.