0f0e31cf51
Per the GCC info page:
If the function is declared 'extern', then this definition of the
function is used only for inlining. In no case is the function
compiled as a standalone function, not even if you take its address
explicitly. Such an address becomes an external reference, as if
you had only declared the function, and had not defined it.
Respect that behavior for inline builtins: keep the original definition, and
generate a copy of the declaration suffixed by '.inline' that's only referenced
in direct call.
This fixes holes in c3717b6858d32d64514a187ede1a77be8ba4e542.
Differential Revision: https://reviews.llvm.org/D111009
20 lines
551 B
C++
20 lines
551 B
C++
#include <stddef.h>
|
|
extern void *memcpy(void *dest, void const *from, size_t n);
|
|
|
|
#ifdef WITH_DECL
|
|
inline __attribute__((always_inline)) __attribute__((gnu_inline)) void *memcpy(void *dest, void const *from, size_t n) {
|
|
char const *ifrom = from;
|
|
char *idest = dest;
|
|
while (n--)
|
|
*idest++ = *ifrom++;
|
|
return dest;
|
|
}
|
|
#endif
|
|
#ifdef WITH_SELF_REFERENCE_DECL
|
|
inline __attribute__((always_inline)) __attribute__((gnu_inline)) void *memcpy(void *dest, void const *from, size_t n) {
|
|
if (n != 0)
|
|
memcpy(dest, from, n);
|
|
return dest;
|
|
}
|
|
#endif
|