diff options
Diffstat (limited to 'elaborate.cxx')
| -rw-r--r-- | elaborate.cxx | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/elaborate.cxx b/elaborate.cxx index 5f3cc8ae..12dbce3a 100644 --- a/elaborate.cxx +++ b/elaborate.cxx @@ -3010,6 +3010,7 @@ struct const_folder: public update_visitor void visit_comparison (comparison* e); void visit_concatenation (concatenation* e); void visit_ternary_expression (ternary_expression* e); + void visit_defined_op (defined_op* e); }; void @@ -3471,6 +3472,20 @@ const_folder::visit_ternary_expression (ternary_expression* e) } } +void +const_folder::visit_defined_op (defined_op* e) +{ + // If a @defined makes it this far, then it is, de facto, undefined. + + if (session.verbose>2) + clog << "Collapsing untouched @defined check " << *e->tok << endl; + relaxed_p = false; + + literal_number* n = new literal_number (0); + n->tok = e->tok; + n->visit (this); +} + static void semantic_pass_const_fold (systemtap_session& s, bool& relaxed_p) { // Let's simplify statements with constant values. |