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-rw-r--r--test/Sema/mrtd.c38
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diff --git a/test/Sema/mrtd.c b/test/Sema/mrtd.c
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+// RUN: %clang_cc1 -DMRTD -mrtd -triple i386-unknown-unknown -verify %s
+// RUN: %clang_cc1 -triple i386-unknown-unknown -verify %s
+
+#ifndef MRTD
+// expected-note@+5 {{previous declaration is here}}
+// expected-error@+5 {{function declared 'stdcall' here was previously declared without calling convention}}
+// expected-note@+5 {{previous declaration is here}}
+// expected-error@+5 {{function declared 'stdcall' here was previously declared without calling convention}}
+#endif
+void nonvariadic1(int a, int b, int c);
+void __attribute__((stdcall)) nonvariadic1(int a, int b, int c);
+void nonvariadic2(int a, int b, int c);
+void __attribute__((stdcall)) nonvariadic2(int a, int b, int c) { }
+
+// expected-warning@+2 {{stdcall calling convention ignored on variadic function}}
+void variadic(int a, ...);
+void __attribute__((stdcall)) variadic(int a, ...);
+
+#ifdef MRTD
+// expected-note@+3 {{previous definition is here}}
+// expected-error@+3 {{redefinition of 'a' with a different type: 'void ((*))(int, int) __attribute__((cdecl))' vs 'void (*)(int, int) __attribute__((stdcall))'}}
+#endif
+extern void (*a)(int, int);
+__attribute__((cdecl)) extern void (*a)(int, int);
+
+extern void (*b)(int, ...);
+__attribute__((cdecl)) extern void (*b)(int, ...);
+
+#ifndef MRTD
+// expected-note@+3 {{previous definition is here}}
+// expected-error@+3 {{redefinition of 'c' with a different type: 'void ((*))(int, int) __attribute__((stdcall))' vs 'void (*)(int, int)'}}
+#endif
+extern void (*c)(int, int);
+__attribute__((stdcall)) extern void (*c)(int, int);
+
+// expected-warning@+2 {{stdcall calling convention ignored on variadic function}}
+extern void (*d)(int, ...);
+__attribute__((stdcall)) extern void (*d)(int, ...);
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