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iverilog
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Handle numeric literals with no digits.

This commit is contained in:
Stephen Williams 2015-09-22 16:15:41 -07:00
parent 027e060865
commit 8803eb3288
2 changed files with 22 additions and 9 deletions
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8
lexor.lex
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@ -862,6 +862,14 @@ verinum*make_unsized_binary(const char*txt)
for (const char*idx = ptr ; *idx ; idx += 1)
if (*idx != '_') size += 1;
if (size == 0) {
VLerror(yylloc, "Numeric literal has no digits in it.");
verinum*out = new verinum();
out->has_sign(sign_flag);
out->is_single(single_flag);
return out;
}
if ((based_size > 0) && (size > based_size)) yywarn(yylloc,
"extra digits given for sized binary constant.");

23
pform.cc
View File

@ -1087,16 +1087,21 @@ verinum* pform_verinum_with_size(verinum*siz, verinum*val,
verinum::V pad;
switch (val->get(val->len()-1)) {
case verinum::Vz:
pad = verinum::Vz;
break;
case verinum::Vx:
if (val->len() == 0) {
pad = verinum::Vx;
break;
default:
pad = verinum::V0;
break;
} else {
switch (val->get(val->len()-1)) {
case verinum::Vz:
pad = verinum::Vz;
break;
case verinum::Vx:
pad = verinum::Vx;
break;
default:
pad = verinum::V0;
break;
}
}
verinum*res = new verinum(pad, size, true);