FAIL_STACK_TOP  2293 modules/up/src/Core/gnu/regex.c #define FAIL_STACK_TOP()       (fail_stack.stack[fail_stack.avail])
FAIL_STACK_TOP  2291 modules/up/src/gnug++/regex.c #define FAIL_STACK_TOP()       (fail_stack.stack[fail_stack.avail])