fix Issue 5810 - Struct postincrement generates 'no effect' error if …

…used on struct member
dlang · May 30, 2014 · ffd3ba8 · ffd3ba8
1 parent 4fbe9f4
commit ffd3ba8
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diff --git a/src/sideeffect.c b/src/sideeffect.c
@@ -208,6 +208,16 @@ void discardValue(Expression *e)
         case TOKerror:
             return;
 
+        case TOKvar:
+        {
+            VarDeclaration *v = ((VarExp *)e)->var->isVarDeclaration();
+            if (v && (v->storage_class & STCtemp))
+            {
+                // Bugzilla 5810: Don't complain about an internal generated variable.
+                return;
+            }
+            break;
+        }
         case TOKcall:
             /* Issue 3882: */
             if (global.params.warnings && !global.gag)

diff --git a/test/runnable/opover2.d b/test/runnable/opover2.d
@@ -822,6 +822,20 @@ void test10037()
     assert(lhs == rhs);     // lowered to: lhs.value == rhs.value
 }
 
+/**************************************/
+// 5810
+
+struct Bug5810
+{
+    void opUnary(string op)() {}
+}
+
+struct Foo5810
+{
+    Bug5810 x;
+    void bar() { x++; }
+}
+
 /**************************************/
 // 6798