X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstring%2Fstrncat.c;h=57200489c97530d58e00901b6c22eca50f1b0b69;hb=40d0246771c8e593d4b5fdc97dd87b4afd260be2;hp=ff9e389e97b5542fe1e7cfea9512bb157582ae94;hpb=c2f1367984ba4153d892062759c3813020b65a9a;p=pdclib

diff --git a/functions/string/strncat.c b/functions/string/strncat.c
index ff9e389..5720048 100644
--- a/functions/string/strncat.c
+++ b/functions/string/strncat.c
@@ -8,8 +8,11 @@
    Permission is granted to use, modify, and / or redistribute at will.
 */
 
+#include <_PDCLIB_aux.h>
 #include <string.h>
 
+#ifndef REGTEST
+
 char * strncat( char * _PDCLIB_restrict s1, const char * _PDCLIB_restrict s2, size_t n )
 {
     char * rc = s1;
@@ -27,3 +30,35 @@ char * strncat( char * _PDCLIB_restrict s1, const char * _PDCLIB_restrict s2, si
     }
     return rc;
 }
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
+{
+    char s[] = "xx\0xxxxxx";
+    BEGIN_TESTS;
+    TESTCASE( strncat( s, abcde, 10 ) == s );
+    TESTCASE( s[2] == 'a' );
+    TESTCASE( s[6] == 'e' );
+    TESTCASE( s[7] == '\0' );
+    TESTCASE( s[8] == 'x' );
+    s[0] = '\0';
+    TESTCASE( strncat( s, abcdx, 10 ) == s );
+    TESTCASE( s[4] == 'x' );
+    TESTCASE( s[5] == '\0' );
+    TESTCASE( strncat( s, "\0", 10 ) == s );
+    TESTCASE( s[5] == '\0' );
+    TESTCASE( s[6] == 'e' );
+    TESTCASE( strncat( s, abcde, 0 ) == s );
+    TESTCASE( s[5] == '\0' );
+    TESTCASE( s[6] == 'e' );
+    TESTCASE( strncat( s, abcde, 3 ) == s );
+    TESTCASE( s[5] == 'a' );
+    TESTCASE( s[7] == 'c' );
+    TESTCASE( s[8] == '\0' );
+    return TEST_RESULTS;
+}
+#endif