[Bug preprocessor/82939] genmatch fills up terminal with endless printing of periods

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82939

--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #1)
> Is that during stage 1 or in a later stage?

stage 1.

Backtraces, for reference:

(gdb) bt
#0  trace_include [inlined] () at
/Users/ericgallager/gcc/libcpp/line-map.c:1390
#1  0x000000010003c105 in linemap_add (set=<value temporarily unavailable, due
to optimizations>, reason=<value temporarily unavailable, due to
optimizations>, sysp=<value temporarily unavailable, due to optimizations>,
to_file=0x100500f90 "../../gcc/match.pd", to_line=1) at
../../../libcpp/line-map.c:570
#2  0x000000010002c33c in _cpp_do_file_change (pfile=0x100800400, reason=<value
temporarily unavailable, due to optimizations>, to_file=<value temporarily
unavailable, due to optimizations>, file_line=<value temporarily unavailable,
due to optimizations>, sysp=<value temporarily unavailable, due to
optimizations>) at ../../../libcpp/directives.c:1125
#3  0x0000000100033af7 in _cpp_stack_file (pfile=0x100800400, file=0x100500e80,
import=false, loc=0) at ../../../libcpp/files.c:932
#4  0x000000010003556c in cpp_read_main_file (pfile=0x100800400,
fname=0x7fff5fbfb6e1 "../../gcc/match.pd") at ../../../libcpp/init.c:647
#5  0x0000000100011ead in main (argc=3, argv=0x7fff5fbfb208) at
../../gcc/genmatch.c:5002
(gdb) bt full
#0  trace_include [inlined] () at
/Users/ericgallager/gcc/libcpp/line-map.c:1390
        map = (const line_map_ordinary *) #1  0x000000010003c105 in linemap_add
(set=<value temporarily unavailable, due to optimizations>, reason=<value
temporarily unavailable, due to optimizations>, sysp=<value temporarily
unavailable, due to optimizations>, to_file=0x100500f90 "../../gcc/match.pd",
to_line=1) at ../../../libcpp/line-map.c:570
        map = (const line_map_ordinary *) #2  0x000000010002c33c in
_cpp_do_file_change (pfile=0x100800400, reason=<value temporarily unavailable,
due to optimizations>, to_file=<value temporarily unavailable, due to
optimizations>, file_line=<value temporarily unavailable, due to
optimizations>, sysp=<value temporarily unavailable, due to optimizations>) at
../../../libcpp/directives.c:1125
        map = <value temporarily unavailable, due to optimizations>
        ord_map = <value temporarily unavailable, due to optimizations>
        __FUNCTION__ = "_cpp_do_file_change"
#3  0x0000000100033af7 in _cpp_stack_file (pfile=0x100800400, file=0x100500e80,
import=false, loc=0) at ../../../libcpp/files.c:932
        buffer = <value temporarily unavailable, due to optimizations>
        sysp = 0
#4  0x000000010003556c in cpp_read_main_file (pfile=0x100800400,
fname=0x7fff5fbfb6e1 "../../gcc/match.pd") at ../../../libcpp/init.c:647
No locals.
#5  0x0000000100011ead in main (argc=3, argv=0x7fff5fbfb208) at
../../gcc/genmatch.c:5002
        r = (cpp_reader *) 0x100800400
        gimple = true
        input = 0x7fff5fbfb6e1 "../../gcc/match.pd"
        cb = (cpp_callbacks *) 0x100800760
        dir = (cpp_dir *) 0x100500e40
        p = {
  r = 0x0, 
  active_ifs = {
    m_vec = 0x9
  }, 
  active_fors = {
    m_vec = 0x7fff5fc005f8
  }, 
  oper_lists_set = 0x7, 
  oper_lists = {
    m_vec = 0x7fff5fc3c028
  }, 
  capture_ids = 0x7fff5fbfb228, 
  last_id = 1606398432, 
  simplifiers = {
    m_vec = 0x7fff5fc016de
  }, 
  user_predicates = {
    m_vec = 0x7fff5fc00020
  }, 
  parsing_match_operand = false
}
        dt = {
  root = 0x7fff5fbfb208
}