[Bug ada/22533] [4.1 regression] Ada ICE during bootstrap on many platforms
--- Comment #29 from ebotcazou at gcc dot gnu dot org 2005-11-16 17:27 --- So I guess it would be possible right now to fix the bootstrap issue by a pure front-end patch. (This doesn't address the more general question of whether or not the gimplifier has a bug that can be exposed by other front-ends too, of course ...) OK, thanks for the analysis. Richard, what do you think? The pure front-end patch Ulrich is talking about is the Ada FE part of http://gcc.gnu.org/ml/gcc-patches/2005-07/msg01666.html -- ebotcazou at gcc dot gnu dot org changed: What|Removed |Added CC||kenner at vlsi1 dot ultra ||dot nyu dot edu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22533
[Bug ada/22533] [4.1 regression] Ada ICE during bootstrap on many platforms
--- Comment #30 from uweigand at gcc dot gnu dot org 2005-11-17 01:08 --- With that patch applied, Ada bootstraps on s390-ibm-linux and s390x-ibm-linux. Regression test results are at: http://gcc.gnu.org/ml/gcc-testresults/2005-11/msg00831.html http://gcc.gnu.org/ml/gcc-testresults/2005-11/msg00832.html There's still quite a number of regressions, but the good news is that all of them are already known from other platforms. Sorted by PR number, the regressions are: both s390 and s390x: PR 18659: c32001e c64105b c95086b PR 22333: c34007p c34007r c45282b PR 20548: c52103x c52104x c52104y PR 22561: ca11c01 s390x only: PR 18819: cdd2a01(*) cdd2a02 s390 only: PR 20753: ce3810b (*) The PR mentions only cdd2a02. But cdd2a01 fails with seemingly the same symptom for me ... -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22533
[Bug ada/22533] [4.1 regression] Ada ICE during bootstrap on many platforms
--- Comment #28 from uweigand at gcc dot gnu dot org 2005-11-15 18:31 --- Just one additional comment: the patch from comment #10 was rejected, maybe because it required changes to the core gimplifier. However, I've tested just the Ada front-end pieces from that patch, and this *already* fixed the problem for me. The reason appears to be that -in general- occurrences of ADDR_EXPR (CONSTRUCTOR) do not constitute a problem. The problem only comes when such constructs occur in turn as part of another (outer) CONSTRUCTOR. The middle-end never generates that case, only the Ada front-end does -- thus it suffices to fix those cases in the Ada front-end itself. So I guess it would be possible right now to fix the bootstrap issue by a pure front-end patch. (This doesn't address the more general question of whether or not the gimplifier has a bug that can be exposed by other front-ends too, of course ...) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22533
[Bug ada/22533] [4.1 regression] Ada ICE during bootstrap on many platforms
--- Comment #26 from ebotcazou at gcc dot gnu dot org 2005-11-15 06:31 --- Investigating. -- ebotcazou at gcc dot gnu dot org changed: What|Removed |Added AssignedTo|unassigned at gcc dot gnu |ebotcazou at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2005-07-23 15:24:35 |2005-11-15 06:31:15 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22533
[Bug ada/22533] [4.1 regression] Ada ICE during bootstrap on many platforms
-- ebotcazou at gcc dot gnu dot org changed: What|Removed |Added Severity|normal |critical http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22533
[Bug ada/22533] [4.1 regression] Ada ICE during bootstrap on many platforms
--- Comment #27 from ebotcazou at gcc dot gnu dot org 2005-11-15 07:47 --- Mark, Downgraded to P5. If this is not Ada-specific, please attach a C/C++ test case. Well, this is definitely not Ada-specific, see comment #11. According to your analysis for PR c++/23171, the middle-end has started rejecting constructs it used to accept, lightly breaking the C++ compiler and severely breaking the Ada compiler in the process. What should we do for 4.1? -- ebotcazou at gcc dot gnu dot org changed: What|Removed |Added CC|ebotcazou at gcc dot gnu dot|mark at codesourcery dot com |org | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22533
