https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91488
Bug ID: 91488
Summary: [9/10 Regression] char_traits::length causes "inlining
failed in call to always_inline" error with -fgnu-tm
-O2 -std=c++17
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: rs2740 at gmail dot com
Target Milestone: ---
Repro (https://gcc.godbolt.org/z/RO-2Ec):
#include <string>
int main() {
auto z = std::char_traits<char>::length("");
}
$ g++ -fgnu-tm -O2 -std=c++17
In file included from
/opt/compiler-explorer/gcc-trunk-20190818/include/c++/10.0.0/string:40,
from <source>:1:
/opt/compiler-explorer/gcc-trunk-20190818/include/c++/10.0.0/bits/char_traits.h:
In static member function 'static constexpr std::size_t
std::char_traits<char>::length(const char_type*)':
/opt/compiler-explorer/gcc-trunk-20190818/include/c++/10.0.0/bits/char_traits.h:231:5:
error: inlining failed in call to 'always_inline' 'constexpr bool
std::__constant_string_p(const _CharT*) [with _CharT = char]':
231 | __constant_string_p(const _CharT* __s)
| ^~~~~~~~~~~~~~~~~~~
/opt/compiler-explorer/gcc-trunk-20190818/include/c++/10.0.0/bits/char_traits.h:332:25:
note: called from here
332 | if (__constant_string_p(__s))
| ~~~~~~~~~~~~~~~~~~~^~~~~
/opt/compiler-explorer/gcc-trunk-20190818/include/c++/10.0.0/bits/char_traits.h:231:5:
error: inlining failed in call to 'always_inline' 'constexpr bool
std::__constant_string_p(const _CharT*) [with _CharT = char]':
231 | __constant_string_p(const _CharT* __s)
| ^~~~~~~~~~~~~~~~~~~
/opt/compiler-explorer/gcc-trunk-20190818/include/c++/10.0.0/bits/char_traits.h:332:25:
note: called from here
332 | if (__constant_string_p(__s))
| ~~~~~~~~~~~~~~~~~~~^~~~~
