[PATCH 2/2] symtab reader: fix symtab iterator to support C++20

["Matthias Männich" <maennich@google.com>]

From: Matthias Maennich <maennich@google.com>

Inheriting from std::vector::iterator causes the type to advertise
itself as a contiguous iterator. This causes a compilation error in
newer versions of libc++ that try to use contiguous-iterator-specific
optimizations in those situations. Fixed thus by explicitly specifying
the interator_concept tag.

	* abg-symtab-reader.h (symtab_iterator): Specify
	  iterator_concept as forward_iterator to support C++20 compilation.

Signed-off-by: Matthias Maennich <maennich@google.com>
---
 src/abg-symtab-reader.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/abg-symtab-reader.h b/src/abg-symtab-reader.h
index 7477cca5a6f0..888a56822224 100644
--- a/src/abg-symtab-reader.h
+++ b/src/abg-symtab-reader.h
@@ -115,6 +115,7 @@ public:
   using pointer = base_iterator::pointer;
   using difference_type = base_iterator::difference_type;
   using iterator_category = std::forward_iterator_tag;
+  using iterator_concept = std::forward_iterator_tag;
 
   /// Construct the iterator based on a pair of underlying iterators and a
   /// symtab_filter object. Immediately fast forward to the next element that
-- 
2.41.0.rc0.172.g3f132b7071-goog