================
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -ast-print %s -o - | FileCheck %s
+
+// CHECK: extern "C" int printf(const char *, ...);
+extern "C" int printf(const char *...);
+
+// CHECK: extern "C++" {
+// CHECK-NEXT: int f(int);
+// CHECK-NEXT: int g(int);
+// CHECK-NEXT: }
+extern "C++" int f(int), g(int);
+
+// CHECK: extern "C" {
+// CHECK-NEXT: void foo();
+// CHECK-NEXT: int x;
+// CHECK-NEXT: int y;
+// CHECK-NEXT: }
+extern "C" {
+ void foo(void);
+ int x, y;
----------------
temyurchenko wrote:
If you mean the splitting of `int x, y` into `int x; int y`, that's actually
the «default». The declarators are split into different declarations whenever
it's possible. So, the splitting doesn't happen only when there is a definition
of a tagged type within the declaration, I believe. So, for example:
`union {} a, b;` → `union {\n} a, b;`
but
`int a, b;` → `int a; int b;`
That fact, that this very splitting already occurs in DeclPrinter and leads to
the deviation from the original source, was the reason why I felt more
comfortable to go forward with adding braces.
https://github.com/llvm/llvm-project/pull/93131
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