--- valgrind-3.7.0/coregrind/m_debuginfo/readdwarf3.c	(revision 12337)

+++ valgrind-3.7.0/coregrind/m_debuginfo/readdwarf3.c	(revision 12338)

@@ -2723,6 +2723,21 @@ static void parse_type_DIE ( /*MOD*/XArr

          goto bad_DIE;

    }

+   /*

+    * Treat DW_TAG_unspecified_type as type void. An example of DW_TAG_unspecified_type:

+    *

+    * $ readelf --debug-dump /usr/lib/debug/usr/lib/libstdc++.so.6.0.16.debug

+    *  <1><10d4>: Abbrev Number: 53 (DW_TAG_unspecified_type)

+    *     <10d5>   DW_AT_name        : (indirect string, offset: 0xdb7): decltype(nullptr)

+    */

+   if (dtag == DW_TAG_unspecified_type) {

+      VG_(memset)(&typeE, 0, sizeof(typeE));

+      typeE.cuOff           = D3_INVALID_CUOFF;

+      typeE.tag             = Te_TyQual;

+      typeE.Te.TyQual.typeR = D3_FAKEVOID_CUOFF;

+      goto acquire_Type;

+   }

+

    /* else ignore this DIE */

    return;

    /*NOTREACHED*/