llvm-project/clang/test/Sema/pragma-ms-alloc-text.cpp
Stephen Long f382545b2b [clang-cl] Handle some pragma alloc_text corner cases handled by MSVC
MSVC's pragma alloc_text accepts a function that was redeclared in
a non extern-C context if the previous declaration was in an extern-C
context. i.e.

```
extern "C" { static void f(); }
static void f();
```

MSVC's pragma alloc_text also rejects non-functions.

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D128649
2022-06-29 06:45:59 -07:00

60 lines
2.0 KiB
C++

// RUN: %clang_cc1 -fms-extensions -fsyntax-only -verify %s
#pragma alloc_text() // expected-warning {{expected a string literal for the section name in '#pragma alloc_text'}}
#pragma alloc_text(a // expected-warning {{expected ',' in '#pragma alloc_text'}}
#pragma alloc_text(a, a // expected-warning {{missing ')' after '#pragma alloc_text'}}
#pragma alloc_text(a, a) // expected-error {{use of undeclared a}}
#pragma alloc_text(L"a", a) // expected-warning {{expected a string literal for the section name}}
void foo();
#pragma alloc_text(a, foo) // expected-error {{'#pragma alloc_text' is applicable only to functions with C linkage}}
extern "C" void foo1();
#pragma alloc_text(a, foo1) // no-warning
#pragma alloc_text(a, foo1) asdf // expected-warning {{extra tokens at end of '#pragma alloc_text'}}
#pragma alloc_text(a, foo1 // expected-warning {{missing ')' after '#pragma alloc_text'}}
namespace N {
#pragma alloc_text(b, foo1) // no-warning
}
extern "C" {
void foo2();
#pragma alloc_text(a, foo2) // no-warning
}
void foo3() {
#pragma alloc_text(a, foo1) // expected-error {{'#pragma alloc_text' can only appear at file scope}}
}
extern "C" void foo4();
#pragma alloc_text(c, foo4) // no-warning
void foo4() {}
void foo5(); // expected-note {{previous declaration is here}}
#pragma alloc_text(c, foo5) // expected-error {{'#pragma alloc_text' is applicable only to functions with C linkage}}
extern "C" void foo5() {} // expected-error {{declaration of 'foo5' has a different language linkage}}
extern "C" {
static void foo6();
#pragma alloc_text(c, foo6) // no-warning
void foo6() {}
}
extern "C" {
static void foo7();
}
static void foo7();
#pragma alloc_text(c, foo7) // no-warning
void foo7() {}
static void foo8();
extern "C" {
static void foo8();
}
#pragma alloc_text(c, foo8) // expected-error {{'#pragma alloc_text' is applicable only to functions with C linkage}}
void foo8() {}
enum foo9 { A, B, C };
#pragma alloc_text(c, foo9) // expected-error {{'#pragma alloc_text' is applicable only to functions}}