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authordim <dim@FreeBSD.org>2015-01-18 16:23:48 +0000
committerdim <dim@FreeBSD.org>2015-01-18 16:23:48 +0000
commitc86b984ea8ecb3e944dc3de48539f4c1f65851ea (patch)
tree3eb853da77d46cc77c4b017525a422f9ddb1385b /test/CodeGen/variadic-null-win64.c
parentc696171ff15f0ee60dea4abfd99a135473c95656 (diff)
downloadFreeBSD-src-c86b984ea8ecb3e944dc3de48539f4c1f65851ea.zip
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Vendor import of clang RELEASE_360/rc1 tag r226102 (effectively, 3.6.0 RC1):
https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_360/rc1@226102
Diffstat (limited to 'test/CodeGen/variadic-null-win64.c')
-rw-r--r--test/CodeGen/variadic-null-win64.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/variadic-null-win64.c b/test/CodeGen/variadic-null-win64.c
new file mode 100644
index 0000000..4f57e7b
--- /dev/null
+++ b/test/CodeGen/variadic-null-win64.c
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-windows-msvc | FileCheck %s --check-prefix=WINDOWS
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-linux | FileCheck %s --check-prefix=LINUX
+
+// Make it possible to pass NULL through variadic functions on platforms where
+// NULL has an integer type that is more narrow than a pointer. On such
+// platforms we widen null pointer constants to a pointer-sized integer.
+
+#define NULL 0
+
+void v(const char *f, ...);
+void f(const char *f) {
+ v(f, 1, 2, 3, NULL);
+}
+// WINDOWS: define void @f(i8* %f)
+// WINDOWS: call void (i8*, ...)* @v(i8* {{.*}}, i32 1, i32 2, i32 3, i64 0)
+// LINUX: define void @f(i8* %f)
+// LINUX: call void (i8*, ...)* @v(i8* {{.*}}, i32 1, i32 2, i32 3, i32 0)
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