clang/test/CodeGenCXX/redefine_extname.cpp

   1 // RUN: %clang_cc1 -triple=i386-pc-solaris2.11 -w -emit-llvm %s -o - | FileCheck %s
   2
   3 extern "C" {
   4   struct statvfs64 {
   5     int f;
   6   };
   7 #pragma redefine_extname statvfs64 statvfs
   8   int statvfs64(struct statvfs64 *);
   9 }
  10
  11 void some_func() {
  12   struct statvfs64 st;
  13   statvfs64(&st);
  14 // Check that even if there is a structure with redefined name before the
  15 // pragma, subsequent function name redefined properly. PR5172, Comment 11.
  16 // CHECK:  call i32 @statvfs(ptr noundef %st)
  17 }
  18
  19 // This is a case when redefenition is deferred *and* we have a local of the
  20 // same name. PR23923.
  21 #pragma redefine_extname foo bar
  22 int f() {
  23   int foo = 0;
  24   return foo;
  25 }
  26 extern "C" {
  27   int foo() { return 1; }
  28 // CHECK: define{{.*}} i32 @bar()
  29 }
  30
  31 // Check that #pragma redefine_extname applies to C code only, and shouldn't be
  32 // applied to C++.
  33 #pragma redefine_extname foo_cpp bar_cpp
  34 extern int foo_cpp() { return 1; }
  35 // CHECK-NOT: define{{.*}} i32 @bar_cpp()
  36