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* [Bug c++/38427] New: crash for reference init code @ 2008-12-06 11:45 dcb314 at hotmail dot com 2008-12-06 12:05 ` [Bug c++/38427] [4.4 Regression] " rguenth at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: dcb314 at hotmail dot com @ 2008-12-06 11:45 UTC (permalink / raw) To: gcc-bugs I just tried to compile the following C++ source code with the GNU C compiler version 4.4 snapshot 20081205. struct S { int & ref; S() : ref() { }; }; The compiler said $ ~/gcc/20081205/results/bin/g++ jun17.cc jun17.cc: In constructor 'S::S()': jun17.cc:5: warning: default-initialization of 'int& S::ref', which has reference type jun17.cc:5: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. Here is valgrind helping out with a stack backtrace ==32646== Invalid read of size 2 ==32646== at 0x54A935: cp_gimplify_expr (cp-gimplify.c:435) ==32646== by 0x6FB6F4: gimplify_expr (gimplify.c:6255) ==32646== by 0x704DD6: gimplify_stmt (gimplify.c:5006) ==32646== by 0x705E4B: gimplify_cleanup_point_expr (gimplify.c:4808) ==32646== by 0x6FC164: gimplify_expr (gimplify.c:6576) ==32646== by 0x704DD6: gimplify_stmt (gimplify.c:5006) ==32646== by 0x7058B5: gimplify_bind_expr (gimplify.c:1264) ==32646== by 0x6FBF36: gimplify_expr (gimplify.c:6430) ==32646== by 0x704DD6: gimplify_stmt (gimplify.c:5006) ==32646== by 0x704EBD: gimplify_body (gimplify.c:7226) ==32646== by 0x7051B4: gimplify_function_tree (gimplify.c:7304) ==32646== by 0x58B259: c_genericize (c-gimplify.c:107) ==32646== Address 0x0 is not stack'd, malloc'd or (recently) free'd This code used to compile ok on snapshot 20081128 -- Summary: crash for reference init code Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com GCC host triplet: suse-linux-x86_64 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38427 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/38427] [4.4 Regression] crash for reference init code 2008-12-06 11:45 [Bug c++/38427] New: crash for reference init code dcb314 at hotmail dot com @ 2008-12-06 12:05 ` rguenth at gcc dot gnu dot org 2008-12-09 19:38 ` mmitchel at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu dot org @ 2008-12-06 12:05 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from rguenth at gcc dot gnu dot org 2008-12-06 12:03 ------- Confirmed. It would be error-recovery if GCC rejected the code as required (2.95.4 rejects it). Default-initialization of references is not valid. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Keywords| |accepts-invalid, ice-on- | |invalid-code Known to work| |2.95.4 4.3.2 Last reconfirmed|0000-00-00 00:00:00 |2008-12-06 12:03:39 date| | Summary|crash for reference init |[4.4 Regression] crash for |code |reference init code Target Milestone|--- |4.4.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38427 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/38427] [4.4 Regression] crash for reference init code 2008-12-06 11:45 [Bug c++/38427] New: crash for reference init code dcb314 at hotmail dot com 2008-12-06 12:05 ` [Bug c++/38427] [4.4 Regression] " rguenth at gcc dot gnu dot org @ 2008-12-09 19:38 ` mmitchel at gcc dot gnu dot org 2008-12-18 20:53 ` jakub at gcc dot gnu dot org 2008-12-18 20:59 ` jakub at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: mmitchel at gcc dot gnu dot org @ 2008-12-09 19:38 UTC (permalink / raw) To: gcc-bugs -- mmitchel at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38427 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/38427] [4.4 Regression] crash for reference init code 2008-12-06 11:45 [Bug c++/38427] New: crash for reference init code dcb314 at hotmail dot com 2008-12-06 12:05 ` [Bug c++/38427] [4.4 Regression] " rguenth at gcc dot gnu dot org 2008-12-09 19:38 ` mmitchel at gcc dot gnu dot org @ 2008-12-18 20:53 ` jakub at gcc dot gnu dot org 2008-12-18 20:59 ` jakub at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu dot org @ 2008-12-18 20:53 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from jakub at gcc dot gnu dot org 2008-12-18 20:52 ------- Subject: Bug 38427 Author: jakub Date: Thu Dec 18 20:51:07 2008 New Revision: 142818 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142818 Log: PR c++/38427 * init.c (perform_member_init): For value-initialized references call permerror instead of warning and don't emit any INIT_EXPR. * g++.dg/init/ctor9.C: New test. Added: trunk/gcc/testsuite/g++.dg/init/ctor9.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/init.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38427 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/38427] [4.4 Regression] crash for reference init code 2008-12-06 11:45 [Bug c++/38427] New: crash for reference init code dcb314 at hotmail dot com ` (2 preceding siblings ...) 2008-12-18 20:53 ` jakub at gcc dot gnu dot org @ 2008-12-18 20:59 ` jakub at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: jakub at gcc dot gnu dot org @ 2008-12-18 20:59 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from jakub at gcc dot gnu dot org 2008-12-18 20:57 ------- Fixed. -- jakub at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38427 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2008-12-18 20:59 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2008-12-06 11:45 [Bug c++/38427] New: crash for reference init code dcb314 at hotmail dot com 2008-12-06 12:05 ` [Bug c++/38427] [4.4 Regression] " rguenth at gcc dot gnu dot org 2008-12-09 19:38 ` mmitchel at gcc dot gnu dot org 2008-12-18 20:53 ` jakub at gcc dot gnu dot org 2008-12-18 20:59 ` jakub at gcc dot gnu dot org
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