parserfunc: fix crash when calculating nested pow

2 files changed, 13 insertions, 1 deletions

diff --git a/src/parserfunc.c b/src/parserfunc.c
index 8f153aa..4ef55d2 100644
--- a/src/parserfunc.c
+++ b/src/parserfunc.c
@@ -587,7 +587,18 @@ pf_do_x_pow_y_int(ParseNode* self)
     gint pow;
     MPNumber* ans = mp_new_ptr();
     val = (MPNumber*) (*(self->left->evaluate))(self->left);
-    pow = super_atoi(self->right->token->string);
+
+    if(!val)
+    {
+        val = mp_new_ptr();
+        mp_set_from_integer(super_atoi(self->left->token->string), val);
+    }
+
+    if (self->right->token != NULL)
+        pow = super_atoi(self->right->token->string);
+    else
+        pow = mp_to_integer((MPNumber*) (*(self->right->evaluate))(self->right));
+
     if(!val)
     {
         mp_free(ans);
diff --git a/src/test-mp-equation.c b/src/test-mp-equation.c
index d31c546..becf742 100644
--- a/src/test-mp-equation.c
+++ b/src/test-mp-equation.c
@@ -435,6 +435,7 @@ test_equations(void)
     test("2²", "4", 0);
     test("2³", "8", 0);
     test("2¹⁰", "1024", 0);
+    test("2³ ²", "512", 0);
     test("(1+2)²", "9", 0);
     test("(x)²", "4", 0);
     test("|1−3|²", "4", 0);