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add error bounds checking when deleting objs.

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NunoSempere 2023-05-07 12:39:57 -04:00
parent c145c862f9
commit c16f08f22a
2 changed files with 2 additions and 1 deletions
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src/mumble.c
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@ -49,6 +49,7 @@ enum {
LISPVAL_SEXPR, LISPVAL_SEXPR,
LISPVAL_QEXPR, LISPVAL_QEXPR,
}; };
int LARGEST_LISPVAL = LISPVAL_QEXPR; // for checking out of bounds.
typedef struct lispval { typedef struct lispval {
int type; int type;
@ -167,7 +168,7 @@ lispval* lispval_qexpr(void)
void print_lispval_tree(lispval* v, int indent_level); void print_lispval_tree(lispval* v, int indent_level);
void delete_lispval(lispval* v) void delete_lispval(lispval* v)
{ {
if (v == NULL) if (v == NULL || v->type > LARGEST_LISPVAL)
return; return;
// print_lispval_tree(v, 0); // print_lispval_tree(v, 0);
if (VERBOSE) if (VERBOSE)