FIX: Intrinsic Version of strcmp May Return Incorrect Result

MORE INFORMATION

You can enable intrinsic functions either by using of the /Oi compiler switch or #pragma intrinsic. To disable intrinsic functions, remove the /Oi compiler switch, add /Oi-, or use #pragma function to force a function call on a function by function basis. Please see the sample code below for use of the #pragma function.

Sample Code

   /* Build Options: /Oi */ 
   #include <stdio.h>
   #include <string.h>
   // uncomment the following line for workaround #2
   //#pragma function(strcmp)

   int main(void)
   {
      char somestr [15]  = "Some String";

      somestr[1] = 0;

   // change the following to strcmp(somestr,"S") for workaround #1
      if (strcmp(somestr,"S\0") == 0)
         printf("match: correct\n");
      else
         printf("no match: incorrect\n");
      return 0;
   }
				

Note that a more common use of an embedded Null character may be to compare a string to "\0" to see if it is an empty string. For the first workaround above, compare it to "" instead.