Fix GitHub issue #168 – alignment of globals.

gen/declarations.cpp

@@ -171,8 +171,12 @@ void VarDeclaration::codegen(Ir* p)
 #endif
         this->ir.irGlobal->value = gvar;
 
-        // set the alignment
-        gvar->setAlignment(this->type->alignsize());
+        // Set the alignment (it is important not to use type->alignsize because
+        // VarDeclarations can have an align() attribute independent of the type
+        // as well). FIXME: ~0 is really STRUCTALIGN_DEFAULT, change as soon as
+        // 1.075 has been merged.
+        if (alignment != ~0)
+            gvar->setAlignment(alignment);
 
         if (Logger::enabled())
             Logger::cout() << *gvar << '\n';

ir/irstruct.cpp

@@ -60,8 +60,12 @@ LLGlobalVariable * IrStruct::getInitSymbol()
     init = new llvm::GlobalVariable(
         *gIR->module, init_type, true, _linkage, NULL, initname);
 
-    // set alignment
-    init->setAlignment(type->alignsize());
+    // set alignment (use of StructDeclaration::alignment analogous to DMD)
+    // FIXME: ~0 is really STRUCTALIGN_DEFAULT, change as soon as 1.075 has
+    // been merged.
+    StructDeclaration *sd = aggrdecl->isStructDeclaration();
+    if (sd && sd->alignment != ~0)
+        init->setAlignment(sd->alignment);
 
     return init;
 }