From 221514efe92676ce84a5e21bea91d8a6b21f9ed7 Mon Sep 17 00:00:00 2001
From: Kevin Enderby <enderby@apple.com>
Date: Tue, 22 Jan 2013 21:44:53 +0000
Subject: Add a warning when there is a macro defintion that has named
 parameters but the body does not use them and it appears the body has
 positional parameters.

This can cause unexpected results as in the added test case.  As the darwin
version of gas(1) which only supported positional parameters, happened to
ignore the named parameters.  Now that we want to support both styles of
macros we issue a warning in this specific case.

rdar://12861644


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173199 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/MC/MachO/bad-macro.s | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 test/MC/MachO/bad-macro.s

(limited to 'test/MC/MachO')

diff --git a/test/MC/MachO/bad-macro.s b/test/MC/MachO/bad-macro.s
new file mode 100644
index 0000000000..0aaba099e8
--- /dev/null
+++ b/test/MC/MachO/bad-macro.s
@@ -0,0 +1,14 @@
+// RUN: llvm-mc -triple x86_64-apple-darwin10 %s 2> %t.err > %t
+// RUN: FileCheck --check-prefix=CHECK-OUTPUT < %t %s
+// RUN: FileCheck --check-prefix=CHECK-ERROR < %t.err %s
+
+.macro test_macro reg1, reg2
+mov $1, %eax
+mov $2, %eax
+.endmacro
+test_macro %ebx, %ecx
+
+// CHECK-ERROR: 5:1: warning: macro defined with named parameters which are not used in macro body, possible positional parameter found in body which will have no effect
+
+// CHECK-OUTPUT: movl	$1, %eax
+// CHECK-OUTPUT: movl	$2, %eax
-- 
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