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Guaranteed termination: snprintf() vs strncpy().

    strncpy() is crappy.

--- a/6/main.c

+++ b/6/main.c

@@ -53,10 +53,8 @@

     psuffix = strrchr(outfile, '.');

     if (psuffix != NULL)

         swapsuffix(buf, sz, outfile, psuffix, suf);

-    else {

-        strncpy(buf, outfile, sz);

-        strncat(buf, suf, sz);

-    }

+    else

+        snprintf(buf, sz, "%s%s", outfile, suf);

 }

 static void assemble(char *asmsrc, char *path)