From da1f5fc881ffe970bc3902f474f6b23dff43f7d8 Mon Sep 17 00:00:00 2001
From: Anders Carlsson <andersca@mac.com>
Date: Wed, 3 Nov 2010 02:22:29 +0000
Subject: A number in an input constraint can't point to a read-write ('+')
 constraint. Fixes PR3904.

llvm-svn: 118145
---
 clang/test/Sema/asm.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'clang/test/Sema/asm.c')

diff --git a/clang/test/Sema/asm.c b/clang/test/Sema/asm.c
index 52611faf3db..73d081ddd38 100644
--- a/clang/test/Sema/asm.c
+++ b/clang/test/Sema/asm.c
@@ -79,3 +79,9 @@ int test7(unsigned long long b) {
 
 // <rdar://problem/7574870>
 asm volatile (""); // expected-warning {{meaningless 'volatile' on asm outside function}}
+
+// PR3904
+int test8(int i) {
+  // A number in an input constraint can't point to a read-write constraint.
+  asm ("" : "+r" (i), "=r"(i) :  "0" (i)); // expected-error{{invalid input constraint '0' in asm}}
+}
-- 
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