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Fix for crash when real value assigned to signed type parameter. 

A declaration of the form "parameter signed a = 1.0" causes a
compiler crash. The standard is somewhat contradictory on what
type "a" should have, but testing with other compilers shows a
majority in favour of it being a real value.
This commit is contained in:
Martin Whitaker 2011-12-12 23:02:09 +00:00 committed by Cary R
parent 670efb38d9
commit 831b6d3ad6
1 changed files with 3 additions and 1 deletions
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4
net_design.cc
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@ -409,7 +409,7 @@ void NetScope::evaluate_parameter_logic_(Design*des, param_ref_t cur)
sure the type is set right. Note that if the parameter
doesn't have an explicit type or range, then it will get
the signedness from the expression itself. */
if ((*cur).second.signed_flag || range_flag) {
if (range_flag) {
/* If we have a real value convert it to an integer. */
if(NetECReal*tmp = dynamic_cast<NetECReal*>(expr)) {
verinum nval(tmp->value().as_long64(), (unsigned)lv_width);
@ -419,6 +419,8 @@ void NetScope::evaluate_parameter_logic_(Design*des, param_ref_t cur)
}
(*cur).second.val->cast_signed((*cur).second.signed_flag);
} else if ((*cur).second.signed_flag) {
(*cur).second.val->cast_signed(true);
}
// If there are no value ranges to test the value against,