dwarf-reader: fix recursion in expr_result::operator&

operator& was implemented in terms of itself, leading to infinite
recursion. Fix that by implementing it in terms of &='ing the const
value. That is consistent with all other ?= operators.

 * src/abg-dwarf-reader.cc: fix expr_result::operator&

Signed-off-by: Matthias Maennich <maennich@google.com>

diff --git a/src/abg-dwarf-reader.cc b/src/abg-dwarf-reader.cc
index be0f6cf7619cd08dafb0d72f8a007b51f6aa3a5a..93f10e7d17a09127079ce24ebbf92f5bfc3c1d61 100644 (file)
--- a/src/abg-dwarf-reader.cc
+++ b/src/abg-dwarf-reader.cc
@@ -2626,7 +2626,7 @@ public:
   operator&(const expr_result& o)
   {
     expr_result r(*this);
-    r.const_value_ = *this & o;
+    r.const_value_ &= o.const_value_;
     r.is_const_ = r.is_const_ && o.is_const_;
     return r;
   }