I'm coming across a segfault when using racket 5.2.1 in some particular circumstances.
Here is a sample to reproduce the problem: #!/home/simon/racket/bin/racket #lang racket/base (display "This is a test, designed to provoke an emotional response") When I chmod +x and run it, it runs just fine: $ /home/simon/racket/bin/racket -v Welcome to Racket v5.2.1. $ ./test.rkt This is a test, designed to provoke an emotional response Running under valgrind segfaults the process: $ valgrind ./test.rkt ==19366== Memcheck, a memory error detector ==19366== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al. ==19366== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info ==19366== Command: ./test.rkt ==19366== ==19366== Invalid read of size 8 ==19366== at 0x5DD34D: scheme_longjmpup (in /home/simon/racket/bin/racket) ==19366== by 0x4402CD: scheme_handle_stack_overflow (in /home/simon/racket/bin/racket) ==19366== by 0x478DD0: overflow_equal_hash_key (in /home/simon/racket/bin/racket) ==19366== by 0x47D63A: equal_hash_key (in /home/simon/racket/bin/racket) ==19366== by 0x47DB39: scheme_equal_hash_key (in /home/simon/racket/bin/racket) ==19366== by 0x51147E: make_hash_indices_for_equal (in /home/simon/racket/bin/racket) ==19366== by 0x479476: get_bucket (in /home/simon/racket/bin/racket) ==19366== by 0x47AF1E: scheme_lookup_in_table (in /home/simon/racket/bin/racket) ==19366== by 0x5FB742: scheme_make_prefab_struct_type_raw (in /home/simon/racket/bin/racket) ==19366== by 0x5FE5F8: scheme_lookup_prefab_type (in /home/simon/racket/bin/racket) ==19366== by 0x621408: scheme_init_thread_places (in /home/simon/racket/bin/racket) ==19366== by 0x42DBB4: place_instance_init (in /home/simon/racket/bin/racket) ==19366== Address 0x8 is not stack'd, malloc'd or (recently) free'd ==19366== SIGSEGV MAPERR si_code 1 fault on addr 0x8 ==19366== ==19366== HEAP SUMMARY: ==19366== in use at exit: 8,554,151 bytes in 1,497 blocks ==19366== total heap usage: 1,507 allocs, 10 frees, 8,567,479 bytes allocated ==19366== ==19366== LEAK SUMMARY: ==19366== definitely lost: 16,680 bytes in 4 blocks ==19366== indirectly lost: 0 bytes in 0 blocks ==19366== possibly lost: 576 bytes in 2 blocks ==19366== still reachable: 8,536,895 bytes in 1,491 blocks ==19366== suppressed: 0 bytes in 0 blocks ==19366== Rerun with --leak-check=full to see details of leaked memory ==19366== ==19366== For counts of detected and suppressed errors, rerun with: -v ==19366== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 2 from 2) zsh: killed valgrind ./test.rkt I first came across this issue trying to run racket under apache, where I suspect the process was being killed off due to its memory usage. Is that 8mb of heap allocation usual for a racket/base process? Should I file a bug or is there something wrong with my setup? Thanks.
____________________ Racket Users list: http://lists.racket-lang.org/users
