Fix printing of anonymous struct typedefs.

clang -cc1 -ast-print put the struct
definition in the wrong place, like this:

  struct {} typedef S;

The reason that this happens is that the printing code
first prints the struct definition, and then tells the next
declaration to leave out the type. This behavior
is correct for simple variable declarations, but fails for
typedefs (or extern, mutable, etc).

The patch address this problem by skipping the struct
declaration when we first see it, and then telling the first
subsequent declaration that it needs to print out the full
struct definition.

Differential Revision: http://reviews.llvm.org/D17285

llvm-svn: 263836

1 files changed, 2 insertions, 0 deletions

diff --git a/clang/test/Sema/ast-print.c b/clang/test/Sema/ast-print.c
index b0e421410b2..4c0aef5b2f3 100644
--- a/clang/test/Sema/ast-print.c
+++ b/clang/test/Sema/ast-print.c
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 %s -ast-print | FileCheck %s
+// RUN: %clang_cc1 %s -ast-print | %clang_cc1 -fsyntax-only -
 
 typedef void func_typedef();
 func_typedef xxx;
@@ -39,6 +40,7 @@ int rvarr(int n, int a[restrict static n]) {
   return a[2];
 }
 
+// CHECK: typedef struct {
 typedef struct {
   int f;
 } T __attribute__ ((__aligned__));