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Only a literal constant size has to match the enumeration width.

This commit is contained in:
Cary R 2014-11-03 19:41:29 -08:00
parent 4660e0bf2f
commit cc9fcfd13d
1 changed files with 14 additions and 12 deletions
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26
elab_scope.cc
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@ -168,7 +168,7 @@ static void elaborate_scope_enumeration(Design*des, NetScope*scope,
assert(enum_type->range->size() == 1);
pform_range_t&range = enum_type->range->front();
NetExpr*msb_ex = elab_and_eval(des, scope, range.first, -1);
NetExpr*lsb_ex = elab_and_eval(des, scope, range.second, -1);
NetExpr*lsb_ex = elab_and_eval(des, scope, range.second, -1);
long msb = 0;
rc_flag = eval_as_long(msb, msb_ex);
@ -221,7 +221,8 @@ static void elaborate_scope_enumeration(Design*des, NetScope*scope,
if (val_const == 0) {
cerr << use_enum->get_fileline()
<< ": error: Enumeration expression for "
<< cur->name <<" is not constant." << endl;
<< cur->name <<" is not an integral constant."
<< endl;
des->errors += 1;
continue;
}
@ -237,18 +238,19 @@ static void elaborate_scope_enumeration(Design*des, NetScope*scope,
<< " can not have an undefined value." << endl;
des->errors += 1;
}
// If the constant has a defined width then it must match
// the enumeration width. In strict mode unsized integers
// are incorrectly given a defined size of integer width so
// handle that. Unfortunately this allows 32'd0 to work
// just like 0 which is wrong.
if (cur_value.has_len() &&
(cur_value.len() != enum_width) &&
(! gn_strict_expr_width_flag ||
(cur_value.len() != integer_width))) {
// If the literal constant has a defined width then it
// must match the enumeration width. In strict mode
// unsized integers are incorrectly given a defined size
// of integer width so handle that. Unfortunately this
// allows 32'd0 to work just like 0 which is wrong.
if (dynamic_cast<PENumber*>(cur->parm) &&
cur_value.has_len() &&
(cur_value.len() != enum_width) &&
(! gn_strict_expr_width_flag ||
(cur_value.len() != integer_width))) {
cerr << use_enum->get_fileline()
<< ": error: Enumeration name " << cur->name
<< " has an incorrectly sized value." << endl;
<< " has an incorrectly sized constant." << endl;
des->errors += 1;
}