[cfe-commits] r77253 - in /cfe/trunk: lib/AST/DeclPrinter.cpp lib/Sema/SemaDecl.cpp test/Sema/return.c

[Mike Stump]

Author: mrs
Date: Mon Jul 27 16:33:40 2009
New Revision: 77253

URL: http://llvm.org/viewvc/llvm-project?rev=77253&view=rev
Log:
Add builtin knowledge about longjmp being noreturn.  Add printing for
the noreturn attribute.

Modified:
    cfe/trunk/lib/AST/DeclPrinter.cpp
    cfe/trunk/lib/Sema/SemaDecl.cpp
    cfe/trunk/test/Sema/return.c

Modified: cfe/trunk/lib/AST/DeclPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/DeclPrinter.cpp?rev=77253&r1=77252&r2=77253&view=diff

==============================================================================
--- cfe/trunk/lib/AST/DeclPrinter.cpp (original)
+++ cfe/trunk/lib/AST/DeclPrinter.cpp Mon Jul 27 16:33:40 2009
@@ -335,6 +335,8 @@
     }
 
     Proto += ")";
+    if (D->hasAttr<NoReturnAttr>())
+      Proto += " __attribute((noreturn))";
     if (CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D)) {
       if (CDecl->getNumBaseOrMemberInitializers() > 0) {
         Proto += " : ";

Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=77253&r1=77252&r2=77253&view=diff

==============================================================================
--- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDecl.cpp Mon Jul 27 16:33:40 2009
@@ -3705,7 +3705,9 @@
     if (!FD->getAttr<FormatAttr>())
       FD->addAttr(::new (Context) FormatAttr("printf", 2,
                                              Name->isStr("vasprintf") ? 0 : 3));
-  }
+  } else if (Name->isStr("longjmp") &&
+             !FD->hasAttr<NoReturnAttr>())
+    FD->addAttr(::new (Context) NoReturnAttr());
 }
 
 TypedefDecl *Sema::ParseTypedefDecl(Scope *S, Declarator &D, QualType T) {

Modified: cfe/trunk/test/Sema/return.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/return.c?rev=77253&r1=77252&r2=77253&view=diff

==============================================================================
--- cfe/trunk/test/Sema/return.c (original)
+++ cfe/trunk/test/Sema/return.c Mon Jul 27 16:33:40 2009
@@ -196,3 +196,9 @@
 int test29() {
   exit(1);
 }
+
+#include <setjmp.h>
+jmp_buf test30_j;
+int test30() {
+  longjmp(test30_j, 1);
+}