Struct field pointer arithmetics. Fixes #724 (#725)

elliotchance · May 8, 2018 · aaf7aa2 · aaf7aa2
1 parent ef95d27
commit aaf7aa2
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Showing 2 changed files with 19 additions and 7 deletions.
diff --git a/tests/struct.c b/tests/struct.c
@@ -352,10 +352,25 @@ const Point2 p2[] = { { .y = 4, .x = 5 } };
 const Point2* getPoint(int index) {
     return &(p2[index]);
 }
+typedef unsigned char pcre_uchar;
+typedef struct spu {
+    pcre_uchar *hvm;
+} spu;
+
+void pointer_arithm_in_struct() {
+    pcre_uchar str[] = "abcd";
+    spu s;
+    spu *ps = &s;
+    ps->hvm = &str[1];
+    is_true(ps->hvm == &str[1]);
+    ps->hvm += 2;
+    is_true(ps->hvm == &str[3]);
+
+}
 
 int main()
 {
-    plan(69);
+    plan(71);
 
     struct programming variable;
     char *s = "Programming in Software Development.";
@@ -614,5 +629,7 @@ int main()
 
 	struct_inside_union();
 
+	pointer_arithm_in_struct();
+
     done_testing();
 }
diff --git a/transpiler/operators.go b/transpiler/operators.go
@@ -323,13 +323,8 @@ func transpileCompoundAssignOperator(
 			return nil, "", nil, nil, fmt.Errorf("Expr is nil")
 		}
 		preStmts, postStmts = combinePreAndPostStmts(preStmts, postStmts, newPre, newPost)
-		var name string
-		name, err = getName(p, n.Children()[0])
-		if err != nil {
-			return nil, "", nil, nil, err
-		}
 		v = &goast.BinaryExpr{
-			X:  goast.NewIdent(name),
+			X:  left,
 			Op: token.ASSIGN,
 			Y:  v,
 		}