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[Bug tree-optimization/76490] [5/6/7 Regression] when use -O2 -fcheck-founds compiler appears to hang and consumes all memory
- From: "dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 14 Aug 2016 08:45:28 +0000
- Subject: [Bug tree-optimization/76490] [5/6/7 Regression] when use -O2 -fcheck-founds compiler appears to hang and consumes all memory
- Authentication-results: sourceware.org; auth=none
- Auto-submitted: auto-generated
- References: <bug-76490-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=76490
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-08-14
Known to work| |4.9.4
Summary|when use -O2 -fcheck-founds |[5/6/7 Regression] when use
|compiler appears to hang |-O2 -fcheck-founds compiler
|and consumes all memory |appears to hang and
| |consumes all memory
Ever confirmed|0 |1
Known to fail| |5.4.0, 6.1.0, 7.0
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed with '-O1 -fcheck=bounds -ftree-vrp' from 5.4.0 up to trunk (7.0).
The test compiles with '-O2 -fcheck=bounds -fno-tree-vrp'.
The change occurred between revisions r226476 (2015-08-02, compiles) and
r227016 (2015-08-19, hangs).