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Re: Very early 3.1 bootstrap failure on sparc-sun-solaris28


Brad Lucier <lucier@math.purdue.edu> writes:

>> 
>> The bootstrap failures on sparc-sun-solaris28 are getting earlier and earlier.
>> 
>> The build command is:
>> 
>> ( ../configure --prefix=/pkgs/gcc-2.96 --enable-languages=c ) ; ( make -j 12 bootstrap BOOT_CFLAGS='-O2 -g -pg' > & build.log ) &
>> 
>> It fails before finishing building stage1 with
>> 
>> ./genattrtab ../../gcc/config/sparc/sparc.md > tmp-attrtab.c
>> All other genattrtab stuff...done
>> Forming and outputing automata tables...Segmentation Fault
>> make[2]: *** [s-attrtab] Error 139
>> make[2]: Leaving directory `/export/home/lucier/gcc/gcc-3.1/objdir/gcc'
>> make[1]: *** [stage1_build] Error 2
>> make[1]: Leaving directory `/export/home/lucier/gcc/gcc-3.1/objdir/gcc'
>> make: *** [bootstrap] Error 2
>> 
>
> A bit more info from gdb genattrtab on sparc:
>
This also happens on rs6000.
I got around it by just defining a simple bs automaton, like the
example in the docs.

> done
> Forming and outputing automata tables...
> Program received signal SIGSEGV, Segmentation fault.
> 0x3463c in output_dfa_max_issue_rate () at ../../gcc/genautomata.c:6123
> 6123      for (automaton = description->first_automaton;
> (gdb) info locals
> automaton = 0x0
> (gdb) where
> #0  0x3463c in output_dfa_max_issue_rate () at ../../gcc/genautomata.c:6123
> #1  0x3e610 in write_automata () at ../../gcc/genautomata.c:8686
> #2  0x24c60 in main (argc=2, argv=0xffbef4ec) at ../../gcc/genattrtab.c:6285
> (gdb) list
> 6118      automaton_t automaton;
> 6119    
> 6120      if (UNDEFINED_LONGEST_PATH_LENGTH == ON_THE_PATH || ON_THE_PATH >= 0)
> 6121        abort ();
> 6122      max_dfa_issue_rate = 0;
> 6123      for (automaton = description->first_automaton;
> 6124           automaton != NULL;
> 6125           automaton = automaton->next_automaton)
> 6126        pass_states (automaton, process_state_longest_path_length);
> 6127      fprintf (output_file, "\nint %s = %d;\n",
>
> and, indeed, automaton is not initialized in output_dfa_max_issue_rate.
>
> This is from today's checkin:
>
> http://gcc.gnu.org/ml/gcc-cvs/2001-08/msg00671.html
>
> Brad

-- 
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