http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47774
--- Comment #1 from Adam Butcher <dev.lists at jessamine dot co.uk> 2011-02-16 23:03:22 UTC --- Created attachment 23369 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23369 Various declarations and constexpr specifications demonstrating problem -- runnable as sh script Added an additional test file, runnable as sh script, which tests various combinations of ctor specifications and member types. Compiling with gcc version 4.6.0 20110216 (experimental) (GCC) built tonight yields: $ sh constexpr-ctor-templ.cpp + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DPLAIN_T -DUSE_SYNTHESIZED_X_CTOR -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DPLAIN_T -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DPLAIN_T -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DPLAIN_T_ARRAY -DUSE_SYNTHESIZED_X_CTOR -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DPLAIN_T_ARRAY -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR constexpr-ctor-templ.cpp: In constructor ‘constexpr X<T>::X() [with T = ncbool]’: constexpr-ctor-templ.cpp:148:14: instantiated from here constexpr-ctor-templ.cpp:103:24: error: ‘ncbool::ncbool(bool)’ is not ‘constexpr’ -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DPLAIN_T_ARRAY -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR constexpr-ctor-templ.cpp: In constructor ‘constexpr X<T>::X() [with T = ncbool]’: constexpr-ctor-templ.cpp:148:14: instantiated from here constexpr-ctor-templ.cpp:103:24: error: ‘ncbool::ncbool(bool)’ is not ‘constexpr’ -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DFLAG_T -DUSE_SYNTHESIZED_X_CTOR constexpr-ctor-templ.cpp: In constructor ‘X<ncbool>::X()’: constexpr-ctor-templ.cpp:100:8: error: ‘constexpr flag<BoolType>::flag(bool) [with BoolType = ncbool]’ is not ‘constexpr’ constexpr-ctor-templ.cpp: In function ‘int main(int, char**)’: constexpr-ctor-templ.cpp:148:14: note: synthesized method ‘X<ncbool>::X()’ first required here -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DFLAG_T -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DFLAG_T -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DFLAG_T_ARRAY -DUSE_SYNTHESIZED_X_CTOR constexpr-ctor-templ.cpp: In constructor ‘constexpr X<ncbool>::X()’: constexpr-ctor-templ.cpp:100:8: error: ‘constexpr flag<BoolType>::flag(bool) [with BoolType = ncbool]’ is not ‘constexpr’ constexpr-ctor-templ.cpp:100:8: error: non-constant array initialization constexpr-ctor-templ.cpp: In function ‘int main(int, char**)’: constexpr-ctor-templ.cpp:148:14: note: synthesized method ‘X<ncbool>::X()’ first required here -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DFLAG_T_ARRAY -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR constexpr-ctor-templ.cpp: In constructor ‘constexpr X<T>::X() [with T = ncbool]’: constexpr-ctor-templ.cpp:148:14: instantiated from here constexpr-ctor-templ.cpp:103:24: error: ‘constexpr flag<BoolType>::flag(bool) [with BoolType = ncbool]’ is not ‘constexpr’ -------------------------------------------- + g++ -c constexpr-ctor-templ.cpp -std=c++0x -DFLAG_T_ARRAY -DGIVE_X_EXPLICIT_CONSTEXPR_CTOR constexpr-ctor-templ.cpp: In constructor ‘constexpr X<T>::X() [with T = ncbool]’: constexpr-ctor-templ.cpp:148:14: instantiated from here constexpr-ctor-templ.cpp:103:24: error: ‘constexpr flag<BoolType>::flag(bool) [with BoolType = ncbool]’ is not ‘constexpr’ -------------------------------------------- Failed 6
