Added #ifdef to allow regression against system lib.

[pdclib] / functions / string / strstr.c

diff --git a/functions/string/strstr.c b/functions/string/strstr.c
index fc5950db4e0e05c2630285d39fca1dd90a4dae7f..0856030f18b0c8fa02e3002e9ef3bbf7a12de489 100644 (file)
--- a/functions/string/strstr.c
+++ b/functions/string/strstr.c
@@ -10,6 +10,8 @@
 
 #include <string.h>
 
+#ifndef REGTEST
+
 char * strstr( const char * s1, const char * s2 )
 {
     const char * p1 = s1;
@@ -31,3 +33,22 @@ char * strstr( const char * s1, const char * s2 )
     }
     return NULL;
 }
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
+{
+    char s[] = "abcabcabcdabcde";
+    BEGIN_TESTS;
+    TESTCASE( strstr( s, "x" ) == NULL );
+    TESTCASE( strstr( s, "xyz" ) == NULL );
+    TESTCASE( strstr( s, "a" ) == &s[0] );
+    TESTCASE( strstr( s, "abc" ) == &s[0] );
+    TESTCASE( strstr( s, "abcd" ) == &s[6] );
+    TESTCASE( strstr( s, "abcde" ) == &s[10] );
+    return TEST_RESULTS;
+}
+#endif