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From: "kab at acm dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/95468] New: ICE in expression sfinae Date: Mon, 01 Jun 2020 19:57:05 +0000 [thread overview] Message-ID: <bug-95468-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95468 Bug ID: 95468 Summary: ICE in expression sfinae Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: kab at acm dot org Target Milestone: --- The code below gets ICE with gcc9.2 and gcc7.5 (the versions I have immediately available to test with). The error message is: internal compiler error: unexpected expression '(bool)(true)' of kind cast_expr To test: g++ -c -std=c++11 ice-expr-sfinae.cpp Strangely, using a namespace scope function template instead of a static member function template works fine. To demonstrate that, compile with -DTRIGGER_ICE=0. ----- ice-expr-sfinae.cpp ----- #include <type_traits> #ifndef TRIGGER_ICE #define TRIGGER_ICE 1 #endif #if TRIGGER_ICE struct slip { template<bool C> static constexpr bool condition() { return C; } }; template<typename std::enable_if<slip::condition<bool(true)>(), int>::type = 0> static bool dispatch() { return true; } bool test() { return dispatch(); } #else // No ICE if the condition function is at namespace scope. template<bool C> static constexpr bool noslip_condition() { return C; } template<typename std::enable_if<noslip_condition<bool(true)>(), int>::type = 0> static bool dispatch() { return true; } bool test() { return dispatch(); } #endif ----- end of file -----
next reply other threads:[~2020-06-01 19:57 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-01 19:57 kab at acm dot org [this message] 2020-06-02 5:56 ` [Bug c++/95468] " marxin at gcc dot gnu.org 2020-06-03 1:09 ` kab at acm dot org 2020-06-03 15:23 ` [Bug c++/95468] [8/9/10/11 Regression] " ppalka at gcc dot gnu.org 2020-06-03 15:48 ` ppalka at gcc dot gnu.org 2021-01-14 8:57 ` rguenth at gcc dot gnu.org 2021-02-12 23:37 ` ppalka at gcc dot gnu.org 2021-02-23 14:40 ` cvs-commit at gcc dot gnu.org 2021-02-23 14:42 ` [Bug c++/95468] [8/9/10 " ppalka at gcc dot gnu.org 2021-03-31 12:33 ` cvs-commit at gcc dot gnu.org 2021-04-21 21:09 ` [Bug c++/95468] [8/9 " cvs-commit at gcc dot gnu.org 2021-05-14 13:58 ` [Bug c++/95468] [8 " jakub at gcc dot gnu.org
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