[GNATS 24963] Spurious diagnostic for an in-class initializer

[jhsedg]

Customer bug ID

best/tests/doc/core_1_refresher.test/core_1_refresher.cpp, gnats/24693.C and gnats/_24693.C (full expanded case)

Description

​[ellen@lin1 tmp]$ $CPFE --c++14 -tused --gnu_version=110100 inclass.reduced.C
​"inclass.reduced.C", line 52: error: a member of type "const untracked_t"
​ cannot have an in-class initializer
​ static const T static_query_v = static_query;
​ ^
​ detected during:
​ instantiation of "const T untracked_t::static_query_v [with E=int,
​ T=untracked_t]" at line 23
​ instantiation of class "static_query_default [with
​ Property=untracked_t]" at line 37
​ instantiation of class "can_query<, Property> [with
​ =int, Property=untracked_t]" at line 37
​ instantiation of class "can_query<, Property> [with
​ =int, Property=prefer_only]" at line 41
​ instantiation of class
​ "supportable_properties::is_valid_target<>
​ [with Prop=prefer_only, =int]" at line 46
​ instantiation of class "is_valid_target_executor [with
​ Props=prefer_only]" at line 61
​
​1 error detected in the compilation of "inclass.reduced.C".

Notes

​ellen, 2023-08-17:
​This is for C++14 only.