This snippet ist from the Plumhall 2014 xvs test suite: #if CXX03 || CXX11 || CXX14 static float (*p1_)(float) = abs; ... checkthat(__LINE__, p1_ != 0); #endif
(With the testsuite specific macros doing the obvious). abs() is declared as: int abs(int j) Am I missing some odd C++ feature or is that part of the test just plain wrong? I don't know where to look in the C++ standard; is this supposed to compile (with or without a warning?) or generate an error or is it just undefined? error: invalid conversion from ‘int (*)(int) throw ()’ to ‘float (*)(float)’ [-fpermissive] (Of course even with -fpermissive this won't work because (at least on my platform) ints are passed in different registers than floats.) Ciao Dominik ^_^ ^_^ -- Dominik Vogt IBM Germany
