[cfe-commits] r92095 - in /cfe/trunk: lib/AST/Expr.cpp test/SemaCXX/warn-unused-variables.cpp

[Nuno Lopes]

Author: nlopes
Date: Wed Dec 23 18:28:18 2009
New Revision: 92095

URL: http://llvm.org/viewvc/llvm-project?rev=92095&view=rev
Log:
support the warn_unused_result in C++ class methods

Modified:
    cfe/trunk/lib/AST/Expr.cpp
    cfe/trunk/test/SemaCXX/warn-unused-variables.cpp

Modified: cfe/trunk/lib/AST/Expr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/Expr.cpp?rev=92095&r1=92094&r2=92095&view=diff

==============================================================================
--- cfe/trunk/lib/AST/Expr.cpp (original)
+++ cfe/trunk/lib/AST/Expr.cpp Wed Dec 23 18:28:18 2009
@@ -402,6 +402,8 @@
   Expr *CEE = getCallee()->IgnoreParenCasts();
   if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CEE))
     return DRE->getDecl();
+  if (MemberExpr *ME = dyn_cast<MemberExpr>(CEE))
+    return ME->getMemberDecl();
 
   return 0;
 }

Modified: cfe/trunk/test/SemaCXX/warn-unused-variables.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/warn-unused-variables.cpp?rev=92095&r1=92094&r2=92095&view=diff

==============================================================================
--- cfe/trunk/test/SemaCXX/warn-unused-variables.cpp (original)
+++ cfe/trunk/test/SemaCXX/warn-unused-variables.cpp Wed Dec 23 18:28:18 2009
@@ -32,3 +32,14 @@
     C();
   }
 }
+
+
+struct X {
+ int foo() __attribute__((warn_unused_result));
+};
+
+void bah() {
+  X x, *x2;
+  x.foo(); // expected-warning {{ignoring return value of function declared with warn_unused_result attribute}}
+  x2->foo(); // expected-warning {{ignoring return value of function declared with warn_unused_result attribute}}
+}