Re: [PATCH] C undefined behavior fix

Momchil Velikov
2002-01-02T10:42:13Z

>>>>> "Florian" == Florian Weimer <fw@deneb.enyo.de> writes:

Florian> Momchil Velikov <velco@fadata.bg> writes:
>> - strcpy(namep, RELOC("linux,phandle"));
>> + memcpy (namep, RELOC("linux,phandle"), sizeof("linux,phandle"));

Florian> Doesn't this still trigger undefined behavior, as far as the C
Florian> standard is concerned? It's probably a better idea to fix the linker,
Florian> so that it performs proper relocation.

Well, strictly speaking it _is_ undefined, however adding/subtracting
__PAGE_OFFSET is far too common operation and one can resonably expect
to get away with it in the _vast_ majority of cases. IMHO, it is
better to fix the particular case, which triggers the undefined
behaviour, as these cases are bound to be _very_ rare.

Regards,
-velco