This confuses me somewhat. I added some code to URI.pike and gave one variable the wrong name and ended up with

Standards.URI;

lib/modules/Standards.pmod/URI.pike:383:Undefined identifier m.

Program received signal SIGSEGV, Segmentation fault. 0x0806a5dc in yyparse () at language.yacc:3310 3310 language.yacc: No such file or directory. in language.yacc (gdb) bt #0 0x0806a5dc in yyparse () at language.yacc:3310 #1 0x084d9178 in ?? () #2 0x080ffd5f in run_pass2 (c=0x84d90b8) at /home/nilsson/Pike/7.7/src/program.c:6521 #3 0x081001ca in compile (aprog=0x84d90b8, ahandler=0xfffffffe, amajor=383, aminor=383, atarget=0x848b3d8, aplaceholder=0x0) at /home/nilsson/Pike/7.7/src/program.c:6749 #4 0x0814992a in f_compile (args=6) at /home/nilsson/Pike/7.7/src/builtin_functions.c:3462 #5 0x08073e5b in opcode_F_CALL_BUILTIN (arg1=383) at /home/nilsson/Pike/7.7/src/interpret_functions.h:2235 ...

Snooping in COPY_LINE_NUMBER_INFO shows that TO is 0. But I have no clue how it ended up like that.