gcc/testsuite/c-c++-common/analyzer/switch-enum-pr105273-git-vreportf-2.c

   1 /* Currently the warning only fires at -O0
   2    (needs to inline the call without optimizing the
   3    implicit default of the switch).  */
   4
   5 /* { dg-additional-options "-O0" } */
   6
   7 typedef __SIZE_TYPE__ size_t;
   8 int snprintf(char *str, size_t size, const char *format, ...);
   9
  10 enum usage_kind {
  11         USAGE_ERROR,
  12         USAGE_BUG,
  13 };
  14
  15 static void __analyzer_vreportf(enum usage_kind kind)
  16 {
  17         char buf[256];
  18         const char *pfx;
  19
  20         switch (kind) { /* { dg-message "following 'default:' branch" } */
  21         case USAGE_ERROR:
  22                 pfx = "error: ";
  23                 break;
  24         case USAGE_BUG:
  25                 pfx = "BUG: ";
  26                 break;
  27         }
  28
  29         if (kind == USAGE_BUG)
  30                 snprintf(buf, sizeof(buf), "%s%s:%d: ", pfx, "file", 123);
  31         else
  32                 snprintf(buf, sizeof(buf), "%s", pfx); /* { dg-warning "uninitialized" } */
  33 }
  34
  35 int main(void)
  36 {
  37         __analyzer_vreportf((enum usage_kind) 42);
  38
  39         return 0;
  40 }