Subject: bug#77709: Restoring the Hurd on core-packages-team branch

From: [email-masked]
Date: Sun, 11 May 2025 12:02:14 +0200 (CEST)

Some more info for bison:

May 7, 2025, 17:18 by [email-masked]:

> I asked about the bison failures on #hurd and ZhaoM tried to rebuild bison on debian with glibc 2.41 and encountered similar segfaults in the same tests.
>
>
One that is easy to reproduce is
22 Undefined Symbols (input.at:1013)

It tries to parse this file:
input.y

%printer {} foo baz
%destructor {} bar
%type <foo> qux
%%
exp: bar;

Starting program: /gnu/store/myb2g81i62fclqf0w9rm6kwrfcg8rv56-bison-3.8.2/bin/bison input.y
[bogus thread id 1 exited]
[bogus thread id 2 exited]
[bogus thread id 3 exited]
[New Thread 10710.5]

Thread 4 received signal SIGSEGV, Segmentation fault.
0x00000000 in ?? ()
(gdb) bt
#0  0x00000000 in ?? ()
#1  0x080917db in keys_init () at lib/fstrcmp.c:69
#2  0x0113dea8 in [email-masked] ()
   from /gnu/store/z945hln6sgh4nl5fy1p67hzb4i6rnc73-glibc-2.41/lib/libc.so.0.3
#3  0x08091a12 in fstrcmp_bounded (string1=0x20036120 "foo", 
    string2=0x200308a0 "$end", lower_bound=0.59999999999999998) at lib/fstrcmp.c:212
#4  0x08083781 in symbol_from_uniqstr_fuzzy (key=0x20036120 "foo") at src/symtab.c:368
#5  complain_symbol_undeclared (sym=0x20036130) at src/symtab.c:383
#6  symbol_check_defined (sym=0x20036130) at src/symtab.c:623
#7  symbols_check_defined () at src/symtab.c:1037
#8  0x08072a0d in check_and_convert_grammar () at src/reader.c:972
#9  reader (gram=0x20000bc0 "input.y") at src/reader.c:772
#10 0x0804b630 in main (argc=2, argv=0x103cdf4) at src/main.c:118

Configuring with --disable-threads works around this but i think this is another problem with libpthread. 

My current hope that this is the only one.
To be continued.