Null pointer for implicit cast. Fixes #399 (#409)

elliotchance · Dec 5, 2017 · 6247097 · 6247097
1 parent af25cba
commit 6247097
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Showing 2 changed files with 15 additions and 1 deletion.
diff --git a/tests/cast.c b/tests/cast.c
@@ -27,7 +27,7 @@ void test_castbool()
 
 int main()
 {
-    plan(7);
+    plan(11);
 
     START_TEST(cast)
     START_TEST(castbool)
@@ -41,5 +41,14 @@ int main()
 	char   *c = (char   *) 0;
 	is_true(c == NULL);
 
+	double *d2 = 0;
+	is_true(d2 == NULL);
+	int    *i2 = 0;
+	is_true(i2 == NULL);
+	float  *f2 = 0;
+	is_true(f2 == NULL);
+	char   *c2 = 0;
+	is_true(c2 == NULL);
+
     done_testing();
 }
diff --git a/transpiler/transpiler.go b/transpiler/transpiler.go
@@ -152,6 +152,11 @@ func transpileToExpr(node ast.Node, p *program.Program, exprIsStmt bool) (
 		expr, exprType, preStmts, postStmts, err = transpileMemberExpr(n, p)
 
 	case *ast.ImplicitCastExpr:
+		if n.Kind == "NullToPointer" {
+			expr = util.NewIdent("nil")
+			exprType = types.NullPointer
+			return
+		}
 		if strings.Contains(n.Type, "enum") {
 			if d, ok := n.Children()[0].(*ast.DeclRefExpr); ok {
 				expr, exprType, err = util.NewIdent(d.Name), n.Type, nil