diff --git a/lang/m2/comp/casestat.C b/lang/m2/comp/casestat.C index eb46834d8..bb38b686f 100644 --- a/lang/m2/comp/casestat.C +++ b/lang/m2/comp/casestat.C @@ -151,6 +151,7 @@ CaseCode(nd, exitlabel, end_reached) int gen = 1; ce = sh->sh_entries; + while (! ce->ce_label) ce = ce->ce_next; C_rom_cst((arith) 0); C_rom_cst(sh->sh_upperbd - sh->sh_lowerbd); for (val = sh->sh_lowerbd; val <= sh->sh_upperbd; val++) { @@ -161,6 +162,7 @@ CaseCode(nd, exitlabel, end_reached) if (val == ce->ce_up) { gen = 0; ce = ce->ce_next; + while (! ce->ce_label) ce = ce->ce_next; } } else if (sh->sh_default) C_rom_ilb(sh->sh_default); @@ -178,6 +180,7 @@ CaseCode(nd, exitlabel, end_reached) for (ce = sh->sh_entries; ce; ce = ce->ce_next) { /* generate the entries: value + prog.label */ + if (! ce->ce_label) continue; val = ce->ce_low; do { C_rom_cst(val); @@ -275,6 +278,9 @@ AddOneCase(sh, lnode, rnode, lbl) if (! ChkCompat(&lnode, sh->sh_type, "case") || ! ChkCompat(&rnode, sh->sh_type, "case")) { } + ce->ce_label = lbl; + ce->ce_low = lnode->nd_INT; + ce->ce_up = rnode->nd_INT; diff = rnode->nd_INT - lnode->nd_INT; #define MAXRANGE 100 if (diff < 0 || diff > MAXRANGE) { @@ -309,31 +315,31 @@ AddOneCase(sh, lnode, rnode, lbl) C_asp(int_size); C_bra(lbl); C_df_ilb(cont); - free_case_entry(ce); - return; + ce->ce_label = 0; } - ce->ce_label = lbl; - ce->ce_low = lnode->nd_INT; - ce->ce_up = rnode->nd_INT; if (sh->sh_entries == 0) { /* first case entry */ sh->sh_entries = ce; - sh->sh_lowerbd = ce->ce_low; - sh->sh_upperbd = ce->ce_up; + if (ce->ce_label) { + sh->sh_lowerbd = ce->ce_low; + sh->sh_upperbd = ce->ce_up; + } } else { /* second etc. case entry find the proper place to put ce into the list */ - if (chk_bounds(ce->ce_low, sh->sh_lowerbd, fund)) { - sh->sh_lowerbd = ce->ce_low; + if (ce->ce_label) { + if (! chk_bounds(sh->sh_lowerbd, ce->ce_low, fund)) { + sh->sh_lowerbd = ce->ce_low; + } + if (! chk_bounds(ce->ce_up, sh->sh_upperbd, fund)) { + sh->sh_upperbd = ce->ce_up; + } } - if (! chk_bounds(ce->ce_up, sh->sh_upperbd, fund)) { - sh->sh_upperbd = ce->ce_up; - } - while (c1 &&! chk_bounds(ce->ce_up, c1->ce_low, fund)) { + while (c1 && chk_bounds(c1->ce_low, ce->ce_low, fund)) { c2 = c1; c1 = c1->ce_next; } @@ -355,6 +361,11 @@ node_error(rnode, "multiple case entry for value %ld", (long)(ce->ce_low)); } } if (c1) { + if ( chk_bounds(c1->ce_low, ce->ce_up, fund)) { +node_error(rnode, "multiple case entry for value %ld", (long)(ce->ce_up)); + free_case_entry(ce); + return; + } if (c2) { ce->ce_next = c2->ce_next; c2->ce_next = ce; @@ -370,5 +381,5 @@ node_error(rnode, "multiple case entry for value %ld", (long)(ce->ce_low)); c2->ce_next = ce; } } - sh->sh_nrofentries += ce->ce_up - ce->ce_low + 1; + if (ce->ce_label) sh->sh_nrofentries += ce->ce_up - ce->ce_low + 1; }