🚀 go-pugleaf

     I thought that the gcc built-in functions were functions that the
compiler included code for, perhaps in the compiler itself, perhaps
libgcc.a.  However, today I tried compiling a test program that used memcpy
and looking at the object file produced; yup, memcpy was listed as an
undefined symbol.  Then I looked at libgcc.a, and couldn't find memcpy
there.

     So, what purpose do the gcc built-in functions serve?  Are they only
there so you don't have to include certain header files?

--
Jason Merrill
jason@jarthur.claremont.edu