gcc/testsuite/gcc.dg/format/branch-1.c

   1 /* Test for format checking of conditional expressions.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=gnu99 -Wformat" } */
   5
   6 #include "format.h"
   7
   8 void
   9 foo (long l, int nfoo)
  10 {
  11   printf ((nfoo > 1) ? "%d foos" : "%d foo", nfoo);
  12   printf ((l > 1) ? "%d foos" : "%d foo", l); /* { dg-warning "int format" "wrong type in conditional expr" } */
  13   printf ((l > 1) ? "%ld foos" : "%d foo", l); /* { dg-warning "int format" "wrong type in conditional expr" } */
  14   printf ((l > 1) ? "%d foos" : "%ld foo", l); /* { dg-warning "int format" "wrong type in conditional expr" } */
  15   /* Should allow one case to have extra arguments.  */
  16   printf ((nfoo > 1) ? "%d foos" : "1 foo", nfoo);
  17   printf ((nfoo > 1) ? "many foos" : "1 foo", nfoo); /* { dg-warning "too many" "too many args in all branches" } */
  18   printf ((nfoo > 1) ? "%d foos" : "", nfoo);
  19   printf ((nfoo > 1) ? "%d foos" : ((nfoo > 0) ? "1 foo" : "no foos"), nfoo);
  20   printf ((nfoo > 1) ? "%d foos" : ((nfoo > 0) ? "%d foo" : "%d foos"), nfoo);
  21   printf ((nfoo > 1) ? "%d foos" : ((nfoo > 0) ? "%d foo" : "%ld foos"), nfoo); /* { dg-warning "long int format" "wrong type" } */
  22   printf ((nfoo > 1) ? "%ld foos" : ((nfoo > 0) ? "%d foo" : "%d foos"), nfoo); /* { dg-warning "long int format" "wrong type" } */
  23   printf ((nfoo > 1) ? "%d foos" : ((nfoo > 0) ? "%ld foo" : "%d foos"), nfoo); /* { dg-warning "long int format" "wrong type" } */
  24   /* Extra arguments to NULL should be complained about.  */
  25   printf (NULL, "foo"); /* { dg-warning "too many" "NULL extra args" } */
  26   /* { dg-warning "null" "null format arg" { target *-*-* } 25 } */
  27 }