Re: c++/10060: ICE on huge file (300k lines)

[Andrew Pinski <pinskia at physics dot uc dot edu>]

The following reply was made to PR c++/10060; it has been noted by GNATS.

From: Andrew Pinski <pinskia@physics.uc.edu>
To: <andreas@florath.net>
Cc: Andrew Pinski <pinskia@physics.uc.edu>, gcc-gnats@gcc.gnu.org,
   gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org, gcc-prs@gcc.gnu.org,
   giovannibajo@libero.it
Subject: Re: c++/10060: ICE on huge file (300k lines)
Date: Fri, 9 May 2003 09:01:54 -0400

 This looks like a stack overflow, a temporary fix is to up the limit on  
 the stacksize.
 The real fix is to change copy_rtx_if_shared to be non-recursive.
 
 
 Thanks,
 Andrew Pinski
 
 
 On Friday, May 9, 2003, at 08:56 US/Eastern, <andreas@florath.net>  
 wrote:
 
 >
 > Hello!
 >
 >
 >         The numbers are 74799 (which works) and 74800 (which failes).
 >
 >         Maybe one additional hint: I had a look at the stack from the
 > core from 88511. It says:
 >
 >  00281958 ggc_alloc (55, 0, 0, 550404, 0, 0)
 >  00129f98 copy_rtx_if_shared (0, 17527728, 0, 33a5c8, 2, 55) + 170
 >  00129f10 copy_rtx_if_shared (17527710, 17527b60, 0, 1, 33a5c8, 4c) +  
 > e8
 >  00129f10 copy_rtx_if_shared (0, 17527f98, 0, 0, 33a5c8, 3) + e8
 >  00129f10 copy_rtx_if_shared (0, 175303d8, 0, 0, 33a5c8, 3) + e8
 >  00129f10 copy_rtx_if_shared (0, 17530810, 0, 0, 33a5c8, 3) + e8
 > ***
 > [there are 74816 lines with copy_rtx_if_shared only with different
 > second argument.]
 > ***
 >  00129f10 copy_rtx_if_shared (0, 33e82498, 0, 0, 33a5c8, 3) + e8
 >  00129f10 copy_rtx_if_shared (0, 33e828d0, 0, 0, 33a5c8, 3) + e8
 >  00129f10 copy_rtx_if_shared (0, 33e82d08, 0, 0, 33a5c8, 3) + e8
 >  00129f10 copy_rtx_if_shared (0, 3, 0, 0, 33a5c8, 3) + e8
 >  00129f10 copy_rtx_if_shared (0, 2, 362cee40, 0, 33a5c8, 3) + e8
 >  00129948 unshare_all_rtl (a895e80, 18b2a50, 18b2a50, 18b2a50,  
 > 11df4a80,
 > 1906e00) + 6c
 >  002635f0 rest_of_compilation (a895e80, 40d4d, 3d2000, 3d2400, dbe04,
 > 3b9000) + 478
 >  000befc4 genrtl_finish_function (a895e80, a895e80, 0, 1906e00, 0,
 > 40d4d) + 68
 >  000bec60 expand_body (a895e80, a8aca80, a6, 0, 0, 0) + 230
 >  00094868 yyparse  (3f1c08, ffbee710, 3e5000, 0, 31e000, ffbee71a) +  
 > 9bc
 >  000dc080 c_common_parse_file (0, ff33fa9c, 0, 3d2b38, dc048, 3b9000) +
 > 38
 >  00262bdc compile_file (32e058, ffbeeb20, 1, 0, 0, 393398) + 34
 >  00267fa8 do_compile (3ebc00, ffbeead4, 0, 0, 0, 0) + 84
 >  0026806c toplev_main (15, ffbeead4, ffbeeb2c, 3c8680, 0, 0) + 5c
 >  0003d20c _start   (0, 0, 0, 0, 0, 0) + 5c
 >
 >
 >         If I can help you (sending some file, try a patch, ...), just
 > drop me a mail.
 >
 >
 >         Best regards
 >
 >         Andreas Florath
 >         andreas@florath.net
 >
 >
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 > trail&database=gcc&pr=10060
 >
 >