78af0708b7
Summary: Makes functions with implicit calling convention compatible with function types with a matching explicit calling convention. This fixes things like calls to qsort(), which has an explicit __cdecl attribute on the comparator in Windows headers. Clang will now infer the calling convention from the declarator. There are two cases when the CC must be adjusted during redeclaration: 1. When defining a non-inline static method. 2. When redeclaring a function with an implicit or mismatched convention. Fixes PR13457, and allows clang to compile CommandLine.cpp for the Microsoft C++ ABI. Excellent test cases provided by Alexander Zinenko! Reviewers: rsmith Differential Revision: http://llvm-reviews.chandlerc.com/D1231 llvm-svn: 189412
27 lines
707 B
C
27 lines
707 B
C
// RUN: %clang_cc1 -mrtd -triple i386-unknown-unknown -std=c89 -emit-llvm -o - %s | FileCheck %s
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void baz(int arg);
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// CHECK: define x86_stdcallcc void @foo(i32 %arg) [[NUW:#[0-9]+]]
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void foo(int arg) {
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// CHECK: call x86_stdcallcc i32 bitcast (i32 (...)* @bar to i32 (i32)*)(
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bar(arg);
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// CHECK: call x86_stdcallcc void @baz(i32
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baz(arg);
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}
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// CHECK: declare x86_stdcallcc i32 @bar(...)
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// CHECK: declare x86_stdcallcc void @baz(i32)
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void qux(int arg, ...) { }
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// CHECK: define void @qux(i32 %arg, ...)
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void quux(int a1, int a2, int a3) {
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qux(a1, a2, a3);
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}
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// CHECK-LABEL: define x86_stdcallcc void @quux
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// CHECK: call void (i32, ...)* @qux
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// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
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