# is specified, then Bison should accept the input, but compilation will fail,
# so don't check compilation.
m4_pushdef([AT_TEST],
-[AT_BISON_OPTION_PUSHDEFS([%language "C++" %define api.namespace "$1"])
+[AT_BISON_OPTION_PUSHDEFS([%language "C++" %define api.namespace {$1}])
AT_DATA_GRAMMAR([[input.y]],
[[%language "C++"
-%define api.namespace "]$1["
+%define api.namespace {]$1[}
%union { int i; }
%define global_tokens_and_yystype
%locations