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From: "gcc at mailinator dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/99309] New: Segmentation fault with __builtin_constant_p usage at -O2 Date: Sun, 28 Feb 2021 10:33:51 +0000 [thread overview] Message-ID: <bug-99309-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99309 Bug ID: 99309 Summary: Segmentation fault with __builtin_constant_p usage at -O2 Product: gcc Version: 10.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: gcc at mailinator dot com Target Milestone: --- Compile: g++ -O2 a.cpp ./a.out Current output: 1 610334368 Segmentation fault (core dumped) Code: #include<iostream> struct T { int val; explicit constexpr operator int() const { return val; } constexpr T(int64_t v):val(v){} void operator*=(T m) { //std::cerr<<"start\n"; if(__builtin_constant_p(m.val)){ std::cerr<<"normal\n"; return; }else if(__builtin_constant_p(val)){ std::cerr<<"recursive\n"; return; }else{ std::cerr<<"return\n"; return; } } }; int main(){ T constexpr step=610334368; T value=1; for(int _=0; _<100; ++_){ std::cerr<<(int)value<<' '<<(int)step<<'\n'; value*=step; std::cerr<<(int)value<<' '<<(int)step<<'\n'; } }
next reply other threads:[~2021-02-28 10:33 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-28 10:33 gcc at mailinator dot com [this message] 2021-03-01 9:31 ` [Bug c++/99309] [10/11 Regression] " rguenth at gcc dot gnu.org 2021-03-01 9:44 ` jakub at gcc dot gnu.org 2021-03-08 15:45 ` [Bug ipa/99309] " mpolacek at gcc dot gnu.org 2021-03-29 14:07 ` jakub at gcc dot gnu.org 2021-03-31 18:18 ` hubicka at gcc dot gnu.org 2021-03-31 18:29 ` jakub at gcc dot gnu.org 2021-03-31 18:46 ` hubicka at ucw dot cz 2021-04-08 12:02 ` rguenth at gcc dot gnu.org 2021-04-15 9:49 ` hubicka at gcc dot gnu.org 2022-03-24 13:59 ` [Bug ipa/99309] [10/11/12 " rguenth at gcc dot gnu.org 2022-06-28 10:43 ` [Bug ipa/99309] [10/11/12/13 " jakub at gcc dot gnu.org 2023-07-07 10:39 ` [Bug ipa/99309] [11/12/13/14 " rguenth at gcc dot gnu.org 2023-08-17 0:19 ` pinskia at gcc dot gnu.org
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