1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/missing-header-fixit-5.c b/gcc/testsuite/gcc.dg/missing-header-fixit-5.c
new file mode 100644
index 0000000..916033c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/missing-header-fixit-5.c
@@ -0,0 +1,36 @@
+
+/* Forget to include any standard headers, all for built-in functions.
+   Rely on -Wimplicit-function-declaration for fixit hints, not on
+   -Wbuiltin-declaration-mismatch (which misses abs, isdigit, putchar).  */
+
+/* { dg-options "-fdiagnostics-show-caret -fdiagnostics-show-line-numbers -Wimplicit-function-declaration -Wno-builtin-declaration-mismatch" } */
+
+int
+foo (char *m, int i)
+{
+  if (isdigit (m[0])) /* { dg-warning "implicit declaration of function" } */
+  /* { dg-begin-multiline-output "" }
+   11 |   if (isdigit (m[0]))
+      |       ^~~~~~~
+  +++ |+#include <ctype.h>
+    1 | 
+     { dg-end-multiline-output "" } */
+    {
+      return abs (i); /* { dg-warning "implicit declaration of function" } */
+  /* { dg-begin-multiline-output "" }
+   19 |       return abs (i);
+      |              ^~~
+  +++ |+#include <stdlib.h>
+    1 | 
+     { dg-end-multiline-output "" } */
+    }
+  else
+    putchar (m[0]); /* { dg-warning "implicit declaration of function" } */
+  /* { dg-begin-multiline-output "" }
+   28 |     putchar (m[0]);
+      |     ^~~~~~~
+  +++ |+#include <stdio.h>
+    1 | 
+     { dg-end-multiline-output "" } */
+  return i;
+}