AT_BISON_CHECK([[-Wall -o input.c input.y]], [[0]],,
[[input.y:24.5-19: warning: rule useless in parser due to conflicts [-Wother]
input.y:28.5-19: warning: rule useless in parser due to conflicts [-Wother]
AT_BISON_CHECK([[-Wall -o input.c input.y]], [[0]],,
[[input.y:24.5-19: warning: rule useless in parser due to conflicts [-Wother]
input.y:28.5-19: warning: rule useless in parser due to conflicts [-Wother]