On Thursday 27 February 2014 21:06:04 Tony Van Eerd wrote: > Sorry, there is probably a KDE email list or something that I > should post this to, but I know it is very closely related to Qt: > > On > http://techbase.kde.org/Policies/Binary_Compatibility_Issues_With_ > C%2B%2B there is: > > You cannot... > > - For existing functions of any type: > - add an overload (BC, but not SC: makes &func ambiguous), adding > overloads to already overloaded functions is ok (any use of &func > already needed a cast). > > There is another issue - implicit casting. ie > > Foo.hpp // old > int foo(const char * ptr); > > MyCode.cpp > #include <Foo.hpp> > int x = foo(NULL); > > > Foo.hpp // NEW (1) > int foo(const char * ptr); > int foo(Bar *); > > MyCode (same as above) now has SC break - "ambiguous function call" > > Foo.hpp // NEW(2) - WORSE > int foo(const char * ptr); > int foo(int); > > MyCode.cpp now still compiles, *but calls a different function!* - > foo(int), as NULL is 0 is an int, and that is a closer match that > foo(const char *). > > > Anyone care? Where should I forward this email to? > > Thanks, > Tony
You are right, but what is your actual question? Christoph Feck (kdepepo) KDE Quality Team _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
