https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120622
Bug ID: 120622
Summary: Compilation error ( no match for operator==) since
libstdc++ commit r15-4475-g7ed561f63e7955
Product: gcc
Version: 15.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: jamborm at gcc dot gnu.org
CC: jwakely.gcc at gmail dot com
Target Milestone: ---
Host: x86_64-linux-gnu
Target: x86_64-linux-gnu
The openSUSE package pythran fails to build with GCC 15 because of a
new compilation error:
./pythonic/builtins/map.hpp:129:36: error: no match for 'operator==' (operand
types are 'std::__tuple_element_t<0,
std::tuple<{anonymous}::pythonic::numpy::ndenumerate_iterator<{anonymous}::pythonic::types::ndarray<long
int, {anonymous}::pythonic::types::pshape<long int, long int> > > > >' {aka
'const
{anonymous}::pythonic::numpy::ndenumerate_iterator<{anonymous}::pythonic::types::ndarray<long
int, {anonymous}::pythonic::types::pshape<long int, long int> > >'} and
'std::__tuple_element_t<0,
std::tuple<{anonymous}::pythonic::numpy::ndenumerate_iterator<{anonymous}::pythonic::types::ndarray<long
int, {anonymous}::pythonic::types::pshape<long int, long int> > > > >' {aka
'const
{anonymous}::pythonic::numpy::ndenumerate_iterator<{anonymous}::pythonic::types::ndarray<long
int, {anonymous}::pythonic::types::pshape<long int, long int> > >'})
The code compiles fine with GCC 14. I have bisected the failure to
r15-4475-g7ed561f63e7955 (Jonathan Wakely: libstdc++: Inline memmove
optimizations for std::copy etc. [PR115444]).
I will attach two reproducers, one is a tarball with the original
source and all necessary includes, the second one is single file with
107 lines that only needs libstdc++ vector and tuple headers that I
obtained by brute force and that hopefully exhibits the same issue.
If this is in fact somehow a user error, my apologies for reporting it
but it but I'd appreciate any information about it that I could report
upstream and use to temporarily fix the package.
