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* [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE @ 2012-10-02 8:22 daniel.kruegler at googlemail dot com 2012-10-02 9:08 ` [Bug c++/54777] " mpolacek at gcc dot gnu.org ` (6 more replies) 0 siblings, 7 replies; 8+ messages in thread From: daniel.kruegler at googlemail dot com @ 2012-10-02 8:22 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 Bug #: 54777 Summary: [C++11] Comma operator in constexpr environment can cause ICE Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: daniel.kruegler@googlemail.com Using gcc 4.8.0 20120923 (experimental) and compiler flags -Wall -pedantic -std=c++11 the following code gives an ICE: //------------- struct array { int data[1]; constexpr const int& at(unsigned i) { return (i < 1 ? 0 : throw 1), data[i]; //return i < 1 ? data[i] : (throw 0, data[i]); // OK } }; int main() { constexpr array a{}; constexpr int i = a.at(0); } //------------- " main.cpp||In function 'int main()':| main.cpp|12| in constexpr expansion of 'a.array::at(0u)'| main.cpp|12|internal compiler error: in adjust_temp_type, at cp/semantics.c:6425| " The code should be accepted. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/54777] [C++11] Comma operator in constexpr environment can cause ICE 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com @ 2012-10-02 9:08 ` mpolacek at gcc dot gnu.org 2012-10-02 10:18 ` jakub at gcc dot gnu.org ` (5 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: mpolacek at gcc dot gnu.org @ 2012-10-02 9:08 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-10-02 CC| |mpolacek at gcc dot gnu.org Ever Confirmed|0 |1 --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-10-02 09:08:18 UTC --- Happens also with 4.7 HEAD. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/54777] [C++11] Comma operator in constexpr environment can cause ICE 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com 2012-10-02 9:08 ` [Bug c++/54777] " mpolacek at gcc dot gnu.org @ 2012-10-02 10:18 ` jakub at gcc dot gnu.org 2012-10-02 10:19 ` jakub at gcc dot gnu.org ` (4 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-02 10:18 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org |gnu.org | --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-02 10:18:27 UTC --- Created attachment 28325 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28325 gcc48-pr54777.patch Untested fix. Guess at least 4.7 and perhaps also 4.6 should get the fix. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/54777] [C++11] Comma operator in constexpr environment can cause ICE 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com 2012-10-02 9:08 ` [Bug c++/54777] " mpolacek at gcc dot gnu.org 2012-10-02 10:18 ` jakub at gcc dot gnu.org @ 2012-10-02 10:19 ` jakub at gcc dot gnu.org 2012-10-03 14:21 ` jakub at gcc dot gnu.org ` (3 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-02 10:19 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.6.4 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/54777] [C++11] Comma operator in constexpr environment can cause ICE 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com ` (2 preceding siblings ...) 2012-10-02 10:19 ` jakub at gcc dot gnu.org @ 2012-10-03 14:21 ` jakub at gcc dot gnu.org 2012-10-03 14:27 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-03 14:21 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-03 14:21:24 UTC --- Author: jakub Date: Wed Oct 3 14:21:20 2012 New Revision: 192036 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192036 Log: PR c++/54777 * semantics.c (cxx_eval_constant_expression) <case COMPOUND_EXPR>: If not ignoring the second operand, pass the original second operand and not one with stripped nops to cxx_eval_constant_expression. * g++.dg/cpp0x/constexpr-ref4.C: New test. Added: trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-ref4.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/semantics.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/54777] [C++11] Comma operator in constexpr environment can cause ICE 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com ` (3 preceding siblings ...) 2012-10-03 14:21 ` jakub at gcc dot gnu.org @ 2012-10-03 14:27 ` jakub at gcc dot gnu.org 2012-10-03 14:32 ` jakub at gcc dot gnu.org 2012-11-29 21:28 ` paolo.carlini at oracle dot com 6 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-03 14:27 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-03 14:27:35 UTC --- Author: jakub Date: Wed Oct 3 14:27:30 2012 New Revision: 192037 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192037 Log: PR c++/54777 * semantics.c (cxx_eval_constant_expression) <case COMPOUND_EXPR>: If not ignoring the second operand, pass the original second operand and not one with stripped nops to cxx_eval_constant_expression. * g++.dg/cpp0x/constexpr-ref4.C: New test. Added: branches/gcc-4_7-branch/gcc/testsuite/g++.dg/cpp0x/constexpr-ref4.C Modified: branches/gcc-4_7-branch/gcc/cp/ChangeLog branches/gcc-4_7-branch/gcc/cp/semantics.c branches/gcc-4_7-branch/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/54777] [C++11] Comma operator in constexpr environment can cause ICE 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com ` (4 preceding siblings ...) 2012-10-03 14:27 ` jakub at gcc dot gnu.org @ 2012-10-03 14:32 ` jakub at gcc dot gnu.org 2012-11-29 21:28 ` paolo.carlini at oracle dot com 6 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2012-10-03 14:32 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-03 14:31:35 UTC --- Fixed for 4.7+. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/54777] [C++11] Comma operator in constexpr environment can cause ICE 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com ` (5 preceding siblings ...) 2012-10-03 14:32 ` jakub at gcc dot gnu.org @ 2012-11-29 21:28 ` paolo.carlini at oracle dot com 6 siblings, 0 replies; 8+ messages in thread From: paolo.carlini at oracle dot com @ 2012-11-29 21:28 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54777 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |akrzemi1 at gmail dot com --- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-11-29 21:28:13 UTC --- *** Bug 55537 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2012-11-29 21:28 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-10-02 8:22 [Bug c++/54777] New: [C++11] Comma operator in constexpr environment can cause ICE daniel.kruegler at googlemail dot com 2012-10-02 9:08 ` [Bug c++/54777] " mpolacek at gcc dot gnu.org 2012-10-02 10:18 ` jakub at gcc dot gnu.org 2012-10-02 10:19 ` jakub at gcc dot gnu.org 2012-10-03 14:21 ` jakub at gcc dot gnu.org 2012-10-03 14:27 ` jakub at gcc dot gnu.org 2012-10-03 14:32 ` jakub at gcc dot gnu.org 2012-11-29 21:28 ` paolo.carlini at oracle dot com
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