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[Bug c++/70594] [6 Regression] -fcompare-debug failure
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 13 Apr 2016 08:34:57 +0000
- Subject: [Bug c++/70594] [6 Regression] -fcompare-debug failure
- Auto-submitted: auto-generated
- References: <bug-70594-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70594
--- Comment #28 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For the #c0 difference with the #c20 instrumentation there is:
/tmp/uids:"yynewstate" label_decl 101636 0 3
/tmp/uids:"yyabortlab" label_decl 101638 0 3
/tmp/uids:"yyacceptlab" label_decl 101639 0 3
/tmp/uids:"yyacceptlab" label_decl 139896 0 2
/tmp/uids:"yyabortlab" label_decl 139897 0 2
/tmp/uids:"yynewstate" label_decl 139898 0 2
/tmp/uids_:"yynewstate" label_decl 101633 0 3
/tmp/uids_:"yyabortlab" label_decl 101635 0 3
/tmp/uids_:"yyacceptlab" label_decl 101636 0 3
/tmp/uids_:"yynewstate" label_decl 139354 0 2
/tmp/uids_:"yyacceptlab" label_decl 139357 0 2
/tmp/uids_:"yyabortlab" label_decl 139358 0 2
which means that it is all about LABEL_DECLs, which are first created using
build_decl in the same order, just with tiny differences in DECL_UID, but then
the are copy_node copied in different order. So guess the question is why they
are copied in the different order.