Downgrade error about stdcall decls with no prototype to a warning

Fixes PR21027.  The MIDL compiler produces code that does this.

If we wanted to improve the warning, I think we could do this:
  void __stdcall f(); // Don't warn without -Wstrict-prototypes.
  void g() {
    f(); // Might warn, the user probably meant for f to take no args.
    f(1, 2, 3); // Warn, we have no idea what args f takes.
    f(1); // Error, this is insane, one of these calls is broken.
  }

Reviewers: thakis

Differential Revision: http://reviews.llvm.org/D5481

llvm-svn: 218394

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/test/CodeGen/mrtd.c b/clang/test/CodeGen/mrtd.c
index 79cd490084f..9bc485d3f35 100644
--- a/clang/test/CodeGen/mrtd.c
+++ b/clang/test/CodeGen/mrtd.c
@@ -3,7 +3,7 @@
 // prototype-less __stdcall functions are only allowed in system headers.
 # 1 "fake_system_header.h" 1 3 4
 
-// CHECK: fake_system_header.h:9:3: warning: function with no prototype cannot use stdcall calling convention
+// CHECK: fake_system_header.h:9:3: warning: function with no prototype cannot use the callee-cleanup stdcall calling convention
 
 void baz(int arg);