0f1c1be196
We have a new policy in place making links to private resources something we try to avoid in source and test files. Normally, we'd organically switch to the new policy rather than make a sweeping change across a project. However, Clang is in a somewhat special circumstance currently: recently, I've had several new contributors run into rdar links around test code which their patch was changing the behavior of. This turns out to be a surprisingly bad experience, especially for newer folks, for a handful of reasons: not understanding what the link is and feeling intimidated by it, wondering whether their changes are actually breaking something important to a downstream in some way, having to hunt down strangers not involved with the patch to impose on them for help, accidental pressure from asking for potentially private IP to be made public, etc. Because folks run into these links entirely by chance (through fixing bugs or working on new features), there's not really a set of problematic links to focus on -- all of the links have basically the same potential for causing these problems. As a result, this is an omnibus patch to remove all such links. This was not a mechanical change; it was done by manually searching for rdar, radar, radr, and other variants to find all the various problematic links. From there, I tried to retain or reword the surrounding comments so that we would lose as little context as possible. However, because most links were just a plain link with no supporting context, the majority of the changes are simple removals. Differential Review: https://reviews.llvm.org/D158071
174 lines
2.9 KiB
C++
174 lines
2.9 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -fsyntax-only -verify -Wretained-language-linkage -DW_RETAINED_LANGUAGE_LINKAGE %s
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extern "C" {
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extern "C" void f(int);
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}
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extern "C++" {
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extern "C++" int& g(int);
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float& g();
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}
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double& g(double);
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void test(int x, double d) {
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f(x);
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float &f1 = g();
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int& i1 = g(x);
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double& d1 = g(d);
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}
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extern "C" int foo;
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extern "C" int foo;
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extern "C" const int bar;
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extern "C" int const bar;
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extern "C" struct bar d;
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extern struct bar e;
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extern "C++" {
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namespace N0 {
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struct X0 {
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int foo(int x) { return x; }
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};
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}
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}
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// PR5430
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namespace pr5430 {
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extern "C" void func(void);
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}
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using namespace pr5430;
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extern "C" void pr5430::func(void) { }
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// PR5405
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int f2(char *)
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{
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return 0;
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}
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extern "C"
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{
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int f2(int)
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{
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return f2((char *)0);
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}
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}
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namespace PR5405 {
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int f2b(char *) {
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return 0;
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}
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extern "C" {
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int f2b(int) {
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return f2b((char *)0); // ok
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}
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}
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}
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// PR6991
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extern "C" typedef int (*PutcFunc_t)(int);
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// PR7859
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extern "C" void pr7859_a(int) {} // expected-note {{previous definition}}
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extern "C" void pr7859_a(int) {} // expected-error {{redefinition}}
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extern "C" void pr7859_b() {} // expected-note {{previous definition}}
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extern "C" void pr7859_b(int) {} // expected-error {{conflicting}}
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extern "C" void pr7859_c(short) {} // expected-note {{previous definition}}
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extern "C" void pr7859_c(int) {} // expected-error {{conflicting}}
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extern "C" {
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struct s0 {
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private:
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s0();
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s0(const s0 &);
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};
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}
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//PR7754
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extern "C++" template <class T> int pr7754(T param);
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namespace N {
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int value;
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}
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extern "C++" using N::value;
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// PR7076
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extern "C" const char *Version_string = "2.9";
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extern "C" {
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extern const char *Version_string2 = "2.9";
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}
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namespace PR9162 {
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extern "C" {
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typedef struct _ArtsSink ArtsSink;
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struct _ArtsSink {
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int sink;
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};
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}
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int arts_sink_get_type()
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{
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return sizeof(ArtsSink);
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}
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}
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namespace pr14958 {
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namespace js { extern int ObjectClass; }
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extern "C" {
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namespace js {}
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}
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int js::ObjectClass;
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}
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extern "C" void PR16167; // expected-error {{variable has incomplete type 'void'}}
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extern void PR16167_0; // expected-error {{variable has incomplete type 'void'}}
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// PR7927
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enum T_7927 {
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E_7927
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};
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extern "C" void f_pr7927(int);
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namespace {
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extern "C" void f_pr7927(int);
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void foo_pr7927() {
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f_pr7927(E_7927);
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f_pr7927(0);
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::f_pr7927(E_7927);
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::f_pr7927(0);
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}
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}
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void bar_pr7927() {
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f_pr7927(E_7927);
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f_pr7927(0);
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::f_pr7927(E_7927);
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::f_pr7927(0);
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}
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namespace PR17337 {
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extern "C++" {
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class Foo;
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extern "C" int bar3(Foo *y);
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class Foo {
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int x;
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friend int bar3(Foo *y);
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#ifdef W_RETAINED_LANGUAGE_LINKAGE
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// expected-note@-5 {{previous declaration is here}}
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// expected-warning@-3 {{retaining previous language linkage}}
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#endif
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};
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extern "C" int bar3(Foo *y) {
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return y->x;
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}
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}
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}
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