Public bug reported:
Version 20.0+dfsg-1.2
log snippet:
```
...
1653s In file included from src/unittest/gl_vec.cc:1:
1653s src/unittest/gl_vec.cc: In function ‘void
____C_A_T_C_H____T_E_S_T____0()’:
1653s src/unittest/gl_vec.cc:24:20: error: call of overloaded ‘rsqrt(double)’
is ambiguous
1653s 24 | CHECK(rsqrt(16.0 ) == 0.25 );
1653s | ~~~~~^~~~~~~
1653s src/unittest/gl_vec.cc:24:20: note: there are 3 candidates
1653s In file included from /usr/include/features.h:523,
1653s from
/usr/include/x86_64-linux-gnu/c++/15/bits/os_defines.h:39,
1653s from
/usr/include/x86_64-linux-gnu/c++/15/bits/c++config.h:727,
1653s from /usr/include/c++/15/cstddef:51,
1653s from Contrib/catch2/catch.hpp:328:
1653s /usr/include/x86_64-linux-gnu/bits/mathcalls.h:206:1: note: candidate 1:
‘double rsqrt(double)’
1653s 206 | __MATHCALL (rsqrt,, (_Mdouble_ __x));
1653s | ^~~~~~~~~~
1653s In file included from src/unittest/gl_vec.cc:2:
1653s src/video/gl_vec.hh:196:28: note: candidate 2: ‘float gl::rsqrt(float)’
1653s 196 | [[nodiscard]] inline float rsqrt(float x)
1653s | ^~~~~
1653s src/video/gl_vec.hh:200:29: note: candidate 3: ‘double gl::rsqrt(double)’
1653s 200 | [[nodiscard]] inline double rsqrt(double x)
1653s | ^~~~~
...
```
** Affects: openmsx (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2120875
Title:
gl_vec.cc fails to compile with C23 with "error: call of overloaded
‘rsqrt(double)’ is ambiguous"
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