fix problems when a case is INT_MAX

[r21630]

diff --git a/ast2firm.c b/ast2firm.c
index 2ddbcab..da8daf1 100644 (file)
--- a/ast2firm.c
+++ b/ast2firm.c
@@ -4431,8 +4431,8 @@ static void switch_statement_to_firm(switch_statement_t *statement)
                        /* default case */
                        continue;
                }
-               for (long cns = l->first_case; cns <= l->last_case; ++cns)
-                       ++num_cases;
+               if (l->last_case >= l->first_case)
+                       num_cases += l->last_case - l->first_case;
                if (l->last_case > def_nr)
                        def_nr = l->last_case;
        }
@@ -4515,14 +4515,14 @@ static void case_label_to_firm(const case_label_statement_t *statement)
 
        set_cur_block(old_block);
        if (statement->expression != NULL) {
-               long start_pn = statement->first_case;
-               long end_pn   = statement->last_case;
-               assert(start_pn <= end_pn);
+               long pn     = statement->first_case;
+               long end_pn = statement->last_case;
+               assert(pn <= end_pn);
                /* create jumps for all cases in the given range */
-               for (long pn = start_pn; pn <= end_pn; ++pn) {
+               do {
                        proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
                        add_immBlock_pred(block, proj);
-               }
+               } while(pn++ < end_pn);
        } else {
                saw_default_label = true;
                proj = new_d_defaultProj(dbgi, current_switch_cond,