Re: Failure to build on OpenBSD macppc

[Alfred M. Szmidt]

I have a useful backtrace for this problem, but I can't really figure
out why it happens.  The short story is that the problem is caused by:

(setq load-source-file-function 'load-with-code-conversion)

in loadup.el, this causes insert-file-contents to be run from mule.el,
at which point when we are returning from insert-file-contents,
something corrupts the stack, so that we cannot return, and we
segfault badly because of it.

If one simply doesn't set load-source-file-function, we continue quite
far until trying to load faces.el, at which point temacs complains
about requiring 'cl.

I have attached a (messy) backtrace; this is right at call to
insert-file-contents in mule.el on line 78, and we are just returning
from insert-file-contents.  Does anyone know what is going on?

(gdb) bt full
#0  Finsert_file_contents (filename=28429859, visit=27949057, beg=-311288, 
    end=524288, replace=27949057) at fileio.c:4766
        val = 28106329
        st = {
  st_dev = 0, 
  st_ino = 248430, 
  st_mode = 33204, 
  st_nlink = 1, 
  st_uid = 1000, 
  st_gid = 1000, 
  st_rdev = 0, 
  st_lspare0 = 27656192, 
  st_atimespec = {
    tv_sec = 1179100208, 
    tv_nsec = 470000000
  }, 
  st_mtimespec = {
    tv_sec = 1178409888, 
    tv_nsec = 610000000
  }, 
  st_ctimespec = {
    tv_sec = 1179097395, 
    tv_nsec = 130000000
  }, 
  st_size = 0, 
  st_blocks = 0, 
  st_blksize = 16384, 
  st_flags = 0, 
  st_gen = 0, 
  st_lspare1 = 3521888, 
  __st_birthtimespec = {
    tv_sec = 1, 
    tv_nsec = 27656192
  }, 
  st_qspare = {-1607822038044114944, 24206848002751728}
}
        fd = 7
        inserted = 0
        how_much = 24
        unprocessed = 524288
        gcpro1 = {
  next = 0x0, 
  var = 0x0, 
  nvars = 0
}
        gcpro2 = {
  next = 0x0, 
  var = 0x0, 
  nvars = 0
}
        gcpro3 = {
  next = 0x0, 
  var = 0x0, 
  nvars = 0
}
        gcpro4 = {
  next = 0x0, 
  var = 0x0, 
  nvars = 0
}
        handler = 27949057
        val = 28463581
        insval = 28463581
        orig_filename = 28429859
        p = 28463581
        total = 65536
        not_regular = 0
        read_buf = '\0' <repeats 52536 times>, "\377\374\020", '\0' <repeats 25 
times>, "\001\261\034y\377\374\020 
\001\213\327\f\000\000\000\000\000\000\000\000\377\374\0200\000\000\000\000\000\000\000\000\377\374\020
 
\377\374\020\360\001\215\035\374\000\000\000\000\001\261\0341\377\374\020P\001\213\327\f",
 '\0' <repeats 20 times>, "\377\374\020P\377\374\021 \001\215\035\374", '\0' 
<repeats 88 times>, "\377\374\020\320", '\0' <repeats 12 times>, 
"\001\246\000\000\377\374\021`\000\000\000\001\001\261\035\t\377\374\020\360\001\213\327\f\001\246\000\000\001\225\f%\377\374\020\360\000\000\000\000\001\245\236\260\377\374\020\360\377\374\021\300\001\215\035\374\001\253vA\001\225\f%\000\000\000\001\001\246\000"...
        coding = {
  type = coding_type_undecided, 
  eol_type = 3, 
  common_flags = 8, 
  flags = 0, 
  mode = 0, 
  composing = 0, 
  composition_rule_follows = 0, 
  cmp_data = 0x0, 
  cmp_data_start = 0, 
  cmp_data_index = 0, 
  spec = {
    iso2022 = {
      current_invocation = {0, 0}, 
      current_designation = {0, 0, 0, 0}, 
      initial_designation = {0, 0, 0, 0}, 
      last_invalid_designation_register = 0, 
      requested_designation = '\0' <repeats 254 times>, 
      charset_revision_number = '\0' <repeats 254 times>, 
      single_shifting = 0, 
      bol = 0
    }, 
    ccl = {
      decoder = {
        idx = 0, 
        size = 0, 
        prog = 0x0, 
        ic = 0, 
        eof_ic = 0, 
        reg = {0, 0, 0, 0, 0, 0, 0, 0}, 
        private_state = 0, 
        last_block = 0, 
        status = 0, 
        buf_magnification = 0, 
        stack_idx = 0, 
        eol_type = 0, 
        multibyte = 0, 
        cr_consumed = 0, 
        suppress_error = 0, 
        eight_bit_control = 0
      }, 
      encoder = {
        idx = 0, 
        size = 0, 
        prog = 0x0, 
        ic = 0, 
        eof_ic = 0, 
        reg = {0, 0, 0, 0, 0, 0, 0, 0}, 
        private_state = 0, 
        last_block = 0, 
        status = 0, 
        buf_magnification = 0, 
        stack_idx = 0, 
        eol_type = 0, 
        multibyte = 0, 
        cr_consumed = 0, 
        suppress_error = 0, 
        eight_bit_control = 0
      }, 
      valid_codes = '\0' <repeats 255 times>, 
      cr_carryover = 0, 
      eight_bit_carryover = "\000\000\000"
    }
  }, 
  category_idx = 0, 
  src_multibyte = 0, 
  dst_multibyte = 1, 
  heading_ascii = -1, 
  produced = 0, 
  produced_char = 0, 
  consumed = 0, 
  consumed_char = 0, 
  errors = 0, 
  result = 0, 
  suppress_error = 0, 
  symbol = 28106329, 
  post_read_conversion = 27949057, 
  pre_write_conversion = 27949057, 
  translation_table_for_decode = 0, 
  translation_table_for_encode = 0
}
        buffer = '\0' <repeats 16383 times>
        replace_handled = 0
        set_coding_system = 1
        coding_system_decided = 0
        read_quit = 0
        old_Vdeactivate_mark = 27949057
#1  0x01894d30 in Finsert_file_contents (filename=28429859, visit=27949057, 
    beg=-311288, end=524288, replace=27949057) at fileio.c:4762
        val = 28106329
        st = {
  st_dev = 26674157, 
  st_ino = 27656192, 
  st_mode = 4294723248, 
  st_nlink = 27656192, 
  st_uid = 1, 
  st_gid = 26674176, 
  st_rdev = 27949057, 
  st_lspare0 = -244032, 
  st_atimespec = {
    tv_sec = -244064, 
    tv_nsec = 26010676
  }, 
  st_mtimespec = {
    tv_sec = 27656192, 
    tv_nsec = 23
  }, 
  st_ctimespec = {
    tv_sec = 26674157, 
    tv_nsec = 27656192
  }, 
  st_size = -1048178150998016, 
  st_blocks = -1048246870181887, 
  st_blksize = 27949057, 
  st_flags = 4294723264, 
  st_gen = 4294723376, 
  st_lspare1 = 26015076, 
  __st_birthtimespec = {
    tv_sec = 28034553, 
    tv_nsec = 26604837
  }, 
  st_qspare = {120040285795714021, 111732049491805888}
}
        fd = 0
        inserted = 0
        how_much = 24
        unprocessed = 524288
        gcpro1 = {
  next = 0xfffc4730, 
  var = 0x18cf428, 
  nvars = -244052
}
        gcpro2 = {
  next = 0x1004700, 
  var = 0xfffc4770, 
  nvars = 2
}
        gcpro3 = {
  next = 0xfffc4700, 
  var = 0x1a60000, 
  nvars = 1
}
        gcpro4 = {
  next = 0xd4162260, 
  var = 0x0, 
  nvars = 28341764
}
        handler = 27949057
        val = 28463581
        insval = 28463581
        orig_filename = 28429859
        p = 28463581
        total = 65536
        not_regular = 0
        read_buf = '\0' <repeats 65535 times>
        coding = {
  type = coding_type_no_conversion, 
  eol_type = 0, 
  common_flags = 0, 
  flags = 0, 
  mode = 0, 
  composing = 0, 
  composition_rule_follows = 0, 
  cmp_data = 0x0, 
  cmp_data_start = 0, 
  cmp_data_index = 0, 
  spec = {
    iso2022 = {
      current_invocation = {0, 0}, 
      current_designation = {0, 0, 0, 0}, 
      initial_designation = {0, 0, 0, 0}, 
      last_invalid_designation_register = 0, 
      requested_designation = '\0' <repeats 254 times>, 
      charset_revision_number = '\0' <repeats 254 times>, 
      single_shifting = 0, 
      bol = 0
    }, 
    ccl = {
      decoder = {
        idx = 0, 
        size = 0, 
        prog = 0x0, 
        ic = 0, 
        eof_ic = 0, 
        reg = {0, 0, 0, 0, 0, 0, 0, 0}, 
        private_state = 0, 
        last_block = 0, 
        status = 0, 
        buf_magnification = 0, 
        stack_idx = 0, 
        eol_type = 0, 
        multibyte = 0, 
        cr_consumed = 0, 
        suppress_error = 0, 
        eight_bit_control = 0
      }, 
      encoder = {
        idx = 0, 
        size = 0, 
        prog = 0x0, 
        ic = 0, 
        eof_ic = 0, 
        reg = {0, 0, 0, 0, 0, 0, 0, 0}, 
        private_state = 0, 
        last_block = 0, 
        status = 0, 
        buf_magnification = 0, 
        stack_idx = 0, 
        eol_type = 0, 
        multibyte = 0, 
        cr_consumed = 0, 
        suppress_error = 0, 
        eight_bit_control = 0
      }, 
      valid_codes = '\0' <repeats 255 times>, 
      cr_carryover = 0, 
      eight_bit_carryover = "\000\000\000"
    }
  }, 
  category_idx = 0, 
  src_multibyte = 0, 
  dst_multibyte = 0, 
  heading_ascii = 0, 
  produced = 0, 
  produced_char = 0, 
  consumed = 0, 
  consumed_char = 0, 
  errors = 0, 
  result = 0, 
  suppress_error = 0, 
  symbol = 0, 
  post_read_conversion = 0, 
  pre_write_conversion = 0, 
  translation_table_for_decode = 0, 
  translation_table_for_encode = 0
}
        buffer = 
"\001\214\363\264\377\374G0\377\374H\000\001\215\033\234\001\253\324y\001\227\003\355\377\374G\240\000\000\000\026\001\246\000\000\377\374Ht\377\374Hp\377\374G8\377\374G<\377\377\377\377\000\000\364\325\001\225\365\020\001\225\364\320\001\252x\001\001\253\2741\001\260v\004\000\000\000\000\000\000\000\000\001\246\000\000\000\000\000\004\000\000\000\004\000\000\000\005\001\225\364\325\377\374G\240\000\000\000\001\001\252x\001\001\260v\004\001\215/@\001\246\000\000\001\262Xm\001\246\000\000\001\246\000\000\001\262X]\000\000\000\001\324\026\"`\000\000\000\v\001\246\000\000\001\246\000\000\001\246\000\000\000\000\000\v\000\000\000\004\001\246\000\000\001\227\003\305\001\246\000\000\001\246\000\000\001\262R]"...
        replace_handled = 0
        set_coding_system = 0
        coding_system_decided = 0
        read_quit = 0
        old_Vdeactivate_mark = 0
Previous frame inner to this frame (corrupt stack?)
(gdb) b unbind_to
Breakpoint 11 at 0x18d363c: file eval.c, line 3340.
(gdb) c
Continuing.

Breakpoint 11, unbind_to (count=24, value=28463581) at eval.c:3340
3340      while (specpdl_ptr != specpdl + count)
(gdb) n
3338      Vquit_flag = Qnil;
(gdb) 
3340      while (specpdl_ptr != specpdl + count)
(gdb) 
3334      Lisp_Object quitf = Vquit_flag;
(gdb) 
3338      Vquit_flag = Qnil;
(gdb) 
3340      while (specpdl_ptr != specpdl + count)
(gdb) 
3386      if (NILP (Vquit_flag) && !NILP (quitf))
(gdb) 
Finsert_file_contents (filename=28429859, visit=27949057, beg=-311288, 
    end=524288, replace=27949057) at fileio.c:4767
4767    }
(gdb) display/1i $pc
1: x/i $pc  0x1894c84 <Finsert_file_contents+1352>:     addis   r5,r1,1
(gdb) si
0x01894c88      4767    }
1: x/i $pc  0x1894c88 <Finsert_file_contents+1356>:     lis     r4,422
(gdb) 
0x01894c8c      4767    }
1: x/i $pc  0x1894c8c <Finsert_file_contents+1360>:     lwz     r0,18280(r5)
(gdb) 
0x01894c90      4767    }
1: x/i $pc  0x1894c90 <Finsert_file_contents+1364>:     lwz     r9,-4416(r4)
(gdb) 
0x01894c94      4767    }
1: x/i $pc  0x1894c94 <Finsert_file_contents+1368>:     cmpw    r0,r9
(gdb) 
0x01894c98      4767    }
1: x/i $pc  0x1894c98 <Finsert_file_contents+1372>:     mfcr    r10
(gdb) 
0x01894c9c      4767    }
1: x/i $pc  0x1894c9c <Finsert_file_contents+1376>:     stw     r10,144(r1)
(gdb) 
0x01894ca0      4767    }
1: x/i $pc  0x1894ca0 <Finsert_file_contents+1380>:     
    beq-    0x1894cb4 <Finsert_file_contents+1400>
(gdb) 
0x01894cb4      4767    }
1: x/i $pc  0x1894cb4 <Finsert_file_contents+1400>:     lwz     r11,0(r1)
(gdb) 
0x01894cb8      4767    }
1: x/i $pc  0x1894cb8 <Finsert_file_contents+1404>:     lwz     r0,4(r11)
(gdb) 
0x01894cbc      4767    }
1: x/i $pc  0x1894cbc <Finsert_file_contents+1408>:     lwz     r12,-76(r11)
(gdb) 
0x01894cc0      4767    }
1: x/i $pc  0x1894cc0 <Finsert_file_contents+1412>:     lwz     r14,-72(r11)
(gdb) 
0x01894cc4      4767    }
1: x/i $pc  0x1894cc4 <Finsert_file_contents+1416>:     mtlr    r0
(gdb) 
0x01894cc8      4767    }
1: x/i $pc  0x1894cc8 <Finsert_file_contents+1420>:     lwz     r15,-68(r11)
(gdb) 
0x01894ccc      4767    }
1: x/i $pc  0x1894ccc <Finsert_file_contents+1424>:     lwz     r16,-64(r11)
(gdb) 
0x01894cd0      4767    }
1: x/i $pc  0x1894cd0 <Finsert_file_contents+1428>:     mtcrf   24,r12
(gdb) 
0x01894cd4      4767    }
1: x/i $pc  0x1894cd4 <Finsert_file_contents+1432>:     lwz     r17,-60(r11)
(gdb) 
0x01894cd8      4767    }
1: x/i $pc  0x1894cd8 <Finsert_file_contents+1436>:     lwz     r18,-56(r11)
(gdb) 
0x01894cdc      4767    }
1: x/i $pc  0x1894cdc <Finsert_file_contents+1440>:     lwz     r19,-52(r11)
(gdb) 
0x01894ce0      4767    }
1: x/i $pc  0x1894ce0 <Finsert_file_contents+1444>:     lwz     r20,-48(r11)
(gdb) 
0x01894ce4      4767    }
1: x/i $pc  0x1894ce4 <Finsert_file_contents+1448>:     lwz     r21,-44(r11)
(gdb) 
0x01894ce8      4767    }
1: x/i $pc  0x1894ce8 <Finsert_file_contents+1452>:     lwz     r22,-40(r11)
(gdb) 
0x01894cec      4767    }
1: x/i $pc  0x1894cec <Finsert_file_contents+1456>:     lwz     r23,-36(r11)
(gdb) 
0x01894cf0      4767    }
1: x/i $pc  0x1894cf0 <Finsert_file_contents+1460>:     lwz     r24,-32(r11)
(gdb) 
0x01894cf4      4767    }
1: x/i $pc  0x1894cf4 <Finsert_file_contents+1464>:     lwz     r25,-28(r11)
(gdb) 
0x01894cf8      4767    }
1: x/i $pc  0x1894cf8 <Finsert_file_contents+1468>:     lwz     r26,-24(r11)
(gdb) 
0x01894cfc      4767    }
1: x/i $pc  0x1894cfc <Finsert_file_contents+1472>:     lwz     r27,-20(r11)
(gdb) 
0x01894d00      4767    }
1: x/i $pc  0x1894d00 <Finsert_file_contents+1476>:     lwz     r28,-16(r11)
(gdb) 
0x01894d04      4767    }
1: x/i $pc  0x1894d04 <Finsert_file_contents+1480>:     lwz     r29,-12(r11)
(gdb) 
0x01894d08      4767    }
1: x/i $pc  0x1894d08 <Finsert_file_contents+1484>:     lwz     r30,-8(r11)
(gdb) 
0x01894d0c      4767    }
1: x/i $pc  0x1894d0c <Finsert_file_contents+1488>:     lwz     r31,-4(r11)
(gdb) 
0x01894d10      4767    }
1: x/i $pc  0x1894d10 <Finsert_file_contents+1492>:     mr      r1,r11
(gdb) 
0x01894d14 in Finsert_file_contents (filename=0, visit=0, beg=0, end=0, 
    replace=0) at fileio.c:4767
4767    }
1: x/i $pc  0x1894d14 <Finsert_file_contents+1496>:     blr
(gdb) 
0x00000000 in ?? ()
1: x/i $pc  0x0:        Cannot access memory at address 0x0
Disabling display 1 to avoid infinite recursion.
(gdb)