sparse can segfault in while loop in is_string_literal():
static int is_string_literal(struct expression **v)
{
struct expression *e = *v;
while (e->type == EXPR_PREOP && e->op == '(')
===> e = e->unop; <===
Here expression is NULL.
Steps to reproduce:
$ echo 'char a[][] = {(};' | sparse -
-:1:16: error: Expected ) in expression
-:1:16: error: got }
Segmentation fault
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