FAIL_STACK       1251 libglibc/regex.c #define PUSH_PATTERN_OP(POINTER, FAIL_STACK)				\
FAIL_STACK       1253 libglibc/regex.c     && !DOUBLE_FAIL_STACK (FAIL_STACK))					\
FAIL_STACK       1255 libglibc/regex.c    : ((FAIL_STACK).stack[(FAIL_STACK).avail++].pointer = POINTER,	\