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ansi: Implement strncat()

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This commit is contained in:
Alexander van der Grinten 2019-03-23 14:33:44 +01:00
parent 265a4fdd8a
commit cffdf686af
1 changed files with 10 additions and 2 deletions
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12
options/ansi/generic/string-stubs.cpp
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@ -38,8 +38,16 @@ char *strcat(char *__restrict dest, const char *__restrict src) {
return dest;
}
char *strncat(char *__restrict dest, const char *__restrict src, size_t max_size) {
__ensure(!"Not implemented");
__builtin_unreachable();
auto dest_bytes = static_cast<char *>(dest);
auto src_bytes = static_cast<const char *>(src);
dest_bytes += strlen(dest);
size_t i = 0;
while(*src_bytes && i < max_size) {
*(dest_bytes++) = *(src_bytes++);
i++;
}
*dest_bytes = 0;
return dest;
}
int memcmp(const void *a, const void *b, size_t size) {