external/ibm-public/postfix/dist/src/util/gccw.c

   1 /*      $NetBSD$        */
   2
   3  /*
   4   * This is is a regression test for all the things that gcc is meant to warn
   5   * about.
   6   *
   7   * gcc version 3 breaks several tests:
   8   *
   9   * -W does not report missing return value
  10   *
  11   * -Wunused does not report unused parameter
  12   */
  13
  14 #include <stdio.h>
  15 #include <setjmp.h>
  16
  17 jmp_buf jbuf;
  18
  19  /* -Wmissing-prototypes: no previous prototype for 'test1' */
  20  /* -Wimplicit: return type defaults to `int' */
  21 test1(void)
  22 {
  23     /* -Wunused: unused variable `foo' */
  24     int     foo;
  25
  26     /* -Wparentheses: suggest parentheses around && within || */
  27     printf("%d\n", 1 && 2 || 3 && 4);
  28     /* -W: statement with no effect */
  29     0;
  30     /* BROKEN in gcc 3 */
  31     /* -W: control reaches end of non-void function */
  32 }
  33
  34
  35  /* -W??????: unused parameter `foo' */
  36 void    test2(int foo)
  37 {
  38     enum {
  39     a = 10, b = 15} moe;
  40     int     bar;
  41
  42     /* -Wuninitialized: 'bar' might be used uninitialized in this function */
  43     /* -Wformat: format argument is not a pointer (arg 2) */
  44     printf("%s\n", bar);
  45     /* -Wformat: too few arguments for format */
  46     printf("%s%s\n", "bar");
  47     /* -Wformat: too many arguments for format */
  48     printf("%s\n", "bar", "bar");
  49
  50     /* -Wswitch: enumeration value `b' not handled in switch */
  51     switch (moe) {
  52     case a:
  53         return;
  54     }
  55 }
  56
  57  /* -Wstrict-prototypes: function declaration isn't a prototype */
  58 void    test3()
  59 {
  60 }