+
+
+## ------------------------------------------------------ ##
+## %define boolean variables: invalid skeleton defaults. ##
+## ------------------------------------------------------ ##
+
+AT_SETUP([[%define boolean variables: invalid skeleton defaults]])
+
+AT_CHECK([[mkdir tmp]])
+
+AT_DATA([[skel.c]],
+[[b4_percent_define_default([[foo]], [[bogus value]])
+b4_percent_define_flag_if([[foo]])
+]])
+
+AT_DATA([[input.y]],
+[[%skeleton "./skel.c"
+%%
+start: ;
+]])
+
+AT_CHECK([[bison input.y]], [[1]], [[]],
+[[[Bison:b4_percent_define_default]:0.0: invalid value for %define boolean variable `foo'
+]])
+
+AT_CLEANUP
+
+