gcc/testsuite/gcc.dg/wtr-conversion-1.c

   1 /* Test for -Wtraditional warnings on conversions by prototypes.
   2    Note, gcc should omit these warnings in system header files.
   3    By Kaveh R. Ghazi <ghazi@caip.rutgers.edu> 4/09/2001.  */
   4 /* { dg-do compile } */
   5 /* { dg-options "-Wtraditional-conversion" } */
   6
   7 extern void foo_i (int);
   8 extern void foo_f (float);
   9 extern void foo_ld (long double);
  10 extern void foo_cd (__complex__ double);
  11
  12 extern int i;
  13 extern float f;
  14 extern long double ld;
  15 extern __complex__ double cd;
  16
  17 void
  18 testfunc1 ()
  19 {
  20   foo_i (i);
  21   foo_i (f); /* { dg-warning "as integer rather than floating" "prototype conversion warning" } */
  22   foo_i (ld); /* { dg-warning "as integer rather than floating" "prototype conversion warning" } */
  23   foo_i (cd); /* { dg-warning "as integer rather than complex" "prototype conversion warning" } */
  24
  25   foo_f (i); /* { dg-warning "as floating rather than integer" "prototype conversion warning" } */
  26   foo_f (f); /* { dg-warning "as 'float' rather than 'double'" "prototype conversion warning" } */
  27   foo_f (ld); /* { dg-warning "as 'float' rather than 'double'" "prototype conversion warning" } */
  28   foo_f (cd); /* { dg-warning "as floating rather than complex" "prototype conversion warning" } */
  29
  30   foo_ld (i); /* { dg-warning "as floating rather than integer" "prototype conversion warning" } */
  31   foo_ld (f);
  32   foo_ld (ld);
  33   foo_ld (cd);/* { dg-warning "as floating rather than complex" "prototype conversion warning" } */
  34
  35   foo_cd (i); /* { dg-warning "as complex rather than integer" "prototype conversion warning" } */
  36   foo_cd (f); /* { dg-warning "as complex rather than floating" "prototype conversion warning" } */
  37   foo_cd (ld); /* { dg-warning "as complex rather than floating" "prototype conversion warning" } */
  38   foo_cd (cd);
  39 }
  40
  41 # 54 "sys-header.h" 3
  42 /* We are in system headers now, no -Wtraditional warnings should issue.  */
  43
  44 void
  45 testfunc2 ()
  46 {
  47   foo_i (i);
  48   foo_i (f);
  49   foo_i (ld);
  50   foo_i (cd);
  51
  52   foo_f (i);
  53   foo_f (f);
  54   foo_f (ld);
  55   foo_f (cd);
  56
  57   foo_ld (i);
  58   foo_ld (f);
  59   foo_ld (ld);
  60   foo_ld (cd);
  61
  62   foo_cd (i);
  63   foo_cd (f);
  64   foo_cd (ld);
  65   foo_cd (cd);
  66 }