mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-23 09:05:31 +00:00
Code Activity

handle undefined constant cases for int.to.str

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-08-13 17:13:10 -07:00
parent 893bcbb585
commit ead704f52f
2 changed files with 23 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

16
src/ast/rewriter/seq_rewriter.cpp
View file

@ -1082,9 +1082,19 @@ br_status seq_rewriter::mk_str_stoi(expr* a, expr_ref& result) {
if (m_util.str.is_string(a, str)) {
std::string s = str.encode();
for (unsigned i = 0; i < s.length(); ++i) {
if (s[i] == '-') { if (i != 0) return BR_FAILED; }
else if ('0' <= s[i] && s[i] <= '9') continue;
return BR_FAILED;
if (s[i] == '-') {
if (i != 0) {
result = m_autil.mk_int(-1);
return BR_DONE;
}
}
else if ('0' <= s[i] && s[i] <= '9') {
continue;
}
else {
result = m_autil.mk_int(-1);
return BR_DONE;
}
}
rational r(s.c_str());
result = m_autil.mk_numeral(r, true);