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Add trap for divide by zero in expression library Added a trap for division by zero in the expression library and adjusted lwasm to use it and report division by zero errors instead of crashing with a cryptic "arithmetic exception" or even more mysterious "floating point exception".
author William Astle <lost@l-w.ca>
date Fri, 25 Jan 2013 21:48:01 -0700
parents d0e9dbe9afbe
children bc25269d96bc
comparison
equal deleted inserted replaced
248:891bab942b5a 249:1f1a28b797e1
40 } 40 }
41 41
42 int lwasm_expr_exportval(asmstate_t *as, lw_expr_t expr) 42 int lwasm_expr_exportval(asmstate_t *as, lw_expr_t expr)
43 { 43 {
44 return 0; 44 return 0;
45 }
46
47 void lwasm_dividezero(void *priv)
48 {
49 asmstate_t *as = (asmstate_t *)priv;
50 lwasm_register_error(as, as -> cl, "Division by zero");
45 } 51 }
46 52
47 lw_expr_t lwasm_evaluate_var(char *var, void *priv) 53 lw_expr_t lwasm_evaluate_var(char *var, void *priv)
48 { 54 {
49 asmstate_t *as = (asmstate_t *)priv; 55 asmstate_t *as = (asmstate_t *)priv;