Add strndup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11638 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/runtime/GCCLibraries/libc/string.c b/runtime/GCCLibraries/libc/string.c
index 0ed4ced..c13b112 100644
--- a/runtime/GCCLibraries/libc/string.c
+++ b/runtime/GCCLibraries/libc/string.c
@@ -6,8 +6,6 @@
#include <stdlib.h>
#include <string.h>
-void *malloc(size_t);
-void free(void *);
size_t strlen(const char *Str) {
size_t Count = 0;
@@ -16,12 +14,21 @@
}
char *strdup(const char *str) {
- long Len = strlen(str);
+ size_t Len = strlen(str);
char *Result = (char*)malloc((Len+1)*sizeof(char));
memcpy(Result, str, Len+1);
return Result;
}
+char *strndup(const char *str, size_t n) {
+ size_t Len = strlen(str);
+ if (Len > n) Len = n;
+ char *Result = (char*)malloc((Len+1)*sizeof(char));
+ memcpy(Result, str, Len);
+ Result[Len] = 0;
+ return Result;
+}
+
char *strcpy(char *s1, const char *s2) {
char *dest = s1;
while ((*s1++ = *s2++));