* John via Gcc-help Dallman: > Hi, folks, > > I'm trying to eliminate calls to classic string functions (strcpy, > strcat, etc.) and memcpy from a shared library, built from C and C++ > code with GCC 11.2. With -D_FORTIFY=2 and a bit of work with macros, > I've eliminated all of them from the source, but I still have calls to > memcpy from the object files. My suspected causes of these are: > > a) Struct copying, with memcpy calls inserted by the compiler. GCC will also optimize __memcpy_chk calls to memcpy if it knows that the bounds cannot be wrong. With struct copies, such a mismatch can only happen if the types are wrong, and that's currently out of scope for source fortification. Thanks, Florian
