diff options
Diffstat (limited to 'elaborate.cxx')
| -rw-r--r-- | elaborate.cxx | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/elaborate.cxx b/elaborate.cxx index 82e767e5..73ac6591 100644 --- a/elaborate.cxx +++ b/elaborate.cxx @@ -494,7 +494,7 @@ derive_probes (systemtap_session& s, s.pattern_root->find_and_build (s, p, loc, 0, dps); unsigned num_atend = dps.size(); - if (num_atbegin == num_atend) // nothing new derived! + if (! loc->optional && num_atbegin == num_atend) // nothing new derived! throw semantic_error ("no match for probe point"); } catch (const semantic_error& e) |