[Parser] Handle #pragma pack/align inside C structs.

Fixes PR13580. Patch by Serge Pavlov!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179743 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 36 insertions, 0 deletions

diff --git a/lib/Parse/ParseDecl.cpp b/lib/Parse/ParseDecl.cpp
index 47826aa3b9..a39cebccb3 100644
--- a/lib/Parse/ParseDecl.cpp
+++ b/lib/Parse/ParseDecl.cpp
@@ -3230,6 +3230,16 @@ void Parser::ParseStructUnionBody(SourceLocation RecordLoc,
       continue;
     }
 
+    if (Tok.is(tok::annot_pragma_pack)) {
+      HandlePragmaPack();
+      continue;
+    }
+
+    if (Tok.is(tok::annot_pragma_align)) {
+      HandlePragmaAlign();
+      continue;
+    }
+
     if (!Tok.is(tok::at)) {
       struct CFieldCallback : FieldCallback {
         Parser &P;
diff --git a/test/Parser/pragma-options.c b/test/Parser/pragma-options.c
index 7844e71080..d168a2751a 100644
--- a/test/Parser/pragma-options.c
+++ b/test/Parser/pragma-options.c
@@ -20,3 +20,15 @@
 #pragma align=reset
 #pragma align=mac68k
 #pragma align=power
+
+// PR13580
+struct S
+{
+  char a[3];
+#pragma align=packed
+  struct T
+  {
+    char b;
+    int c;
+  } d;
+};
diff --git a/test/Parser/pragma-pack.c b/test/Parser/pragma-pack.c
index 84778cd501..172a332510 100644
--- a/test/Parser/pragma-pack.c
+++ b/test/Parser/pragma-pack.c
@@ -30,3 +30,17 @@
 
 _Pragma("pack(push)")
 /* expected-warning {{expected integer or identifier in '#pragma pack'}}*/ _Pragma("pack(push,)") 
+
+// PR13580
+struct S
+{
+  char a[3];
+#pragma pack(1)
+  struct T
+  {
+    char b;
+    int c;
+  } d;
+#pragma pack()
+  int e;
+};