2022-01-18  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/104103
	* gimple-ssa-warn-access.cc (pass_waccess::check_call): Don't check
	.ASAN_MARK calls.

--- gcc/gimple-ssa-warn-access.cc.jj	2022-01-16 20:55:46.783932110 +0100
+++ gcc/gimple-ssa-warn-access.cc	2022-01-18 20:56:13.697780325 +0100
@@ -4232,6 +4232,11 @@ pass_waccess::check_call (gcall *stmt)
   if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL))
     check_builtin (stmt);
 
+  /* .ASAN_MARK doesn't access any vars, only modifies shadow memory.  */
+  if (gimple_call_internal_p (stmt)
+      && gimple_call_internal_fn (stmt) == IFN_ASAN_MARK)
+    return;
+
   if (!m_early_checks_p)
     if (tree callee = gimple_call_fndecl (stmt))
       {