Suggest typo corrections for implicit function declarations.

A mistyped function call becomes an inmplicit function declaration in C.
Suggest typo correction when one can be found.

llvm-svn: 145930

1 files changed, 8 insertions, 1 deletions

diff --git a/clang/test/Sema/implicit-decl.c b/clang/test/Sema/implicit-decl.c
index f4559775366..72e42e05bb6 100644
--- a/clang/test/Sema/implicit-decl.c
+++ b/clang/test/Sema/implicit-decl.c
@@ -3,6 +3,8 @@
 typedef int int32_t;
 typedef unsigned char Boolean;
 
+extern int printf(__const char *__restrict __format, ...); // expected-note{{'printf' declared here}}
+
 void func() {
    int32_t *vector[16];
    const char compDesc[16 + 1];
@@ -10,8 +12,13 @@ void func() {
    if (_CFCalendarDecomposeAbsoluteTimeV(compDesc, vector, compCount)) { // expected-note {{previous implicit declaration is here}} \
          expected-warning {{implicit declaration of function '_CFCalendarDecomposeAbsoluteTimeV' is invalid in C99}}
    }
+
+   printg("Hello, World!\n"); // expected-warning{{implicit declaration of function 'printg' is invalid in C99}} \
+                              // expected-note{{did you mean 'printf'?}}
+
+  __builtin_is_les(1, 3); // expected-error{{use of unknown builtin '__builtin_is_les'}} \
+                          // expected-note{did you mean '__builtin_is_less'?}}
 }
 Boolean _CFCalendarDecomposeAbsoluteTimeV(const char *componentDesc, int32_t **vector, int32_t count) { // expected-error{{conflicting types for '_CFCalendarDecomposeAbsoluteTimeV'}}
  return 0;
 }
-