gcc/testsuite/gcc.dg/missing-header-fixit-5a.c

   1
   2 /* Forget to include any standard headers, all for built-in functions.
   3    Rely on -Wimplicit-function-declaration for fixit hints, not on
   4    -Wbuiltin-declaration-mismatch (which misses abs, isdigit, putchar).  */
   5
   6 /* { dg-options "-fdiagnostics-show-caret -fdiagnostics-show-line-numbers -Wimplicit-function-declaration -Wno-builtin-declaration-mismatch" } */
   7
   8 int
   9 foo (char *m, int i)
  10 {
  11   if (isdigit (m[0])) /* { dg-error "implicit declaration of function" } */
  12   /* { dg-begin-multiline-output "" }
  13    11 |   if (isdigit (m[0]))
  14       |       ^~~~~~~
  15      { dg-end-multiline-output "" } */
  16   /* { dg-begin-multiline-output "" }
  17   +++ |+#include <ctype.h>
  18     1 |
  19      { dg-end-multiline-output "" } */
  20     {
  21       return abs (i); /* { dg-error "implicit declaration of function" } */
  22   /* { dg-begin-multiline-output "" }
  23    21 |       return abs (i);
  24       |              ^~~
  25      { dg-end-multiline-output "" } */
  26   /* { dg-begin-multiline-output "" }
  27   +++ |+#include <stdlib.h>
  28     1 |
  29      { dg-end-multiline-output "" } */
  30     }
  31   else
  32     putchar (m[0]); /* { dg-error "implicit declaration of function" } */
  33   /* { dg-begin-multiline-output "" }
  34    32 |     putchar (m[0]);
  35       |     ^~~~~~~
  36      { dg-end-multiline-output "" } */
  37   /* { dg-begin-multiline-output "" }
  38   +++ |+#include <stdio.h>
  39     1 |
  40      { dg-end-multiline-output "" } */
  41   return i;
  42 }