diff options
Diffstat (limited to 'mdk-stage1/dietlibc/lib/strncat.c')
| -rw-r--r-- | mdk-stage1/dietlibc/lib/strncat.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mdk-stage1/dietlibc/lib/strncat.c b/mdk-stage1/dietlibc/lib/strncat.c index 1d3b94ca5..21e2be326 100644 --- a/mdk-stage1/dietlibc/lib/strncat.c +++ b/mdk-stage1/dietlibc/lib/strncat.c @@ -1,10 +1,17 @@ #include "dietfeatures.h" #include <string.h> +/* this implementation is not standards compliant. + * the standard says that strncat(dest,"foobar",3) should write 'f', 'o' + * and 'o'. The programmer is then expected to overwrite the last byte + * with '\0', which is often forgotten. This implementation makes sure + * the last written bytes is always '\0'. */ + char *strncat(char *s, const char *t, size_t n) { char *dest=s; - register char *max=s+n-1; + register char *max; s+=strlen(s); + max=s+n-1; for (;;) { if (!(*s = *t)) break; if (++s==max) break; ++t; #ifndef WANT_SMALL_STRING_ROUTINES |