alarsyo/spot
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

acc: strengthen is_generalized_rabin() and is_generalized_streett()

Browse source 
* spot/twa/acc.cc: These functions were segfaulting on acceptance
conditions such as "Acceptance: 3 t" or "Acceptance: 3 f".
The issue was revealed on branch "next" by the change that print_dot()
display the acceptance condition by default, but we want the fix on
master as well.
* NEWS: Mention the issue.
This commit is contained in:
Alexandre Duret-Lutz 2018-03-10 20:30:14 +01:00
parent 057e67e7f6
commit 15fdac6059
2 changed files with 14 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

10
spot/twa/acc.cc
View file

@ -660,7 +660,10 @@ namespace spot
pairs.resize(num_);
return true;
}
if (code_.is_t()
// "Acceptance: 0 f" is caught by is_generalized_rabin() above.
// Therefore is_f() below catches "Acceptance: n f" with n>0.
if (code_.is_f()
|| code_.is_t()
|| code_.back().sub.op != acc_op::Or)
return false;
@ -741,7 +744,10 @@ namespace spot
pairs.resize(num_);
return true;
}
if (code_.is_f()
// "Acceptance: 0 t" is caught by is_generalized_buchi() above.
// Therefore is_t() below catches "Acceptance: n t" with n>0.
if (code_.is_t()
|| code_.is_f()
|| code_.back().sub.op != acc_op::And)
return false;