https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105311
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jsm28 at gcc dot gnu.org
Keywords| |documentation
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
All memcpy, memmove and memset are eventually emitted for aggregate copying and
initialization. Targets may choose to force inline them but there is indeed no
libgcc fallback with -ffreestanding.
Our -ffreestanding documentation ought to reflect this I guess. Joseph, do you
know of other library routines GCC requires but does not provide even with
-ffreestanding? There might or might not be a subset of the C standard library
that is supposed to be available in a freestanding implementation - like good
parts of the math runtime, and GCC likely doesn't diagnose usage with
-ffreestanding but assumes the user provides the necessary implementations via
custom libraries.
