commit 10922b70b825a0a9b4df9694ceb9f20e93e2c11d
Author: Mark Wielaard <mark@klomp.org>
Date:   Sat Sep 18 02:19:13 2021 +0200

    m_debuginfo: Handle DW_TAG_atomic_type
    
    DW_TAG_atomic_type is a DWARF5 qualifier tag like DW_TAG_volatile_type,
    DW_TAG_const_type and DW_TAG_restrict_type.

diff --git a/coregrind/m_debuginfo/readdwarf3.c b/coregrind/m_debuginfo/readdwarf3.c
index 52c27d4bb..968c37bd6 100644
--- a/coregrind/m_debuginfo/readdwarf3.c
+++ b/coregrind/m_debuginfo/readdwarf3.c
@@ -4191,14 +4191,15 @@ static void parse_type_DIE ( /*MOD*/XArray* /* of TyEnt */ tyents,
    }
 
    if (dtag == DW_TAG_volatile_type || dtag == DW_TAG_const_type
-       || dtag == DW_TAG_restrict_type) {
+       || dtag == DW_TAG_restrict_type || dtag == DW_TAG_atomic_type) {
       Int have_ty = 0;
       VG_(memset)(&typeE, 0, sizeof(typeE));
       typeE.cuOff = D3_INVALID_CUOFF;
       typeE.tag   = Te_TyQual;
       typeE.Te.TyQual.qual
          = (dtag == DW_TAG_volatile_type ? 'V'
-            : (dtag == DW_TAG_const_type ? 'C' : 'R'));
+            : (dtag == DW_TAG_const_type ? 'C'
+               : (dtag == DW_TAG_restrict_type ? 'R' : 'A')));
       /* target type defaults to 'void' */
       typeE.Te.TyQual.typeR = D3_FAKEVOID_CUOFF;
       nf_i = 0;
diff --git a/coregrind/m_debuginfo/tytypes.c b/coregrind/m_debuginfo/tytypes.c
index 75e4cf500..e356b92c9 100644
--- a/coregrind/m_debuginfo/tytypes.c
+++ b/coregrind/m_debuginfo/tytypes.c
@@ -295,6 +295,7 @@ void ML_(pp_TyEnt_C_ishly)( const XArray* /* of TyEnt */ tyents,
             case 'C': VG_(printf)("const "); break;
             case 'V': VG_(printf)("volatile "); break;
             case 'R': VG_(printf)("restrict "); break;
+            case 'A': VG_(printf)("atomic "); break;
             default: goto unhandled;
          }
          ML_(pp_TyEnt_C_ishly)(tyents, ent->Te.TyQual.typeR);