Thorsten wrote: > This is not acceptable, it means that there is use of > uninitialised memory somewhere. Unfortunately I think > valgrind, which is the tool of choice for this, isn’t > ported to m68k yet… I’ll try to find it nevertheless. > > An strace is not useful for segfaults in user space > applications, by the way – it only displays syscalls.
Is it good in this? $ valgrind ./mksh -c 'echo $((++(VAR)))' ==3417== Memcheck, a memory error detector ==3417== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. ==3417== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info ==3417== Command: ./mksh -c echo\ $((++(VAR))) ==3417== ==3417== Use of uninitialised value of size 4 ==3417== at 0x11B565: assign_check.isra.0.3422 (expr.c:650) ==3417== by 0x49C6EB6: ??? ==3417== ==3417== Invalid read of size 1 ==3417== at 0x11B565: assign_check.isra.0.3422 (expr.c:650) ==3417== by 0x49C6EB6: ??? ==3417== Address 0x1c is not stack'd, malloc'd or (recently) free'd ==3417== ==3417== ==3417== Process terminating with default action of signal 11 (SIGSEGV) ==3417== Access not within mapped region at address 0x1C ==3417== at 0x11B565: assign_check.isra.0.3422 (expr.c:650) ==3417== by 0x49C6EB6: ??? ==3417== If you believe this happened as a result of a stack ==3417== overflow in your program's main thread (unlikely but ==3417== possible), you can try to increase the size of the ==3417== main thread stack using the --main-stacksize= flag. ==3417== The main thread stack size used in this run was 8388608. ==3417== ==3417== HEAP SUMMARY: ==3417== in use at exit: 26,058 bytes in 330 blocks ==3417== total heap usage: 456 allocs, 126 frees, 29,722 bytes allocated ==3417== ==3417== LEAK SUMMARY: ==3417== definitely lost: 0 bytes in 0 blocks ==3417== indirectly lost: 0 bytes in 0 blocks ==3417== possibly lost: 0 bytes in 0 blocks ==3417== still reachable: 26,058 bytes in 330 blocks ==3417== suppressed: 0 bytes in 0 blocks ==3417== Rerun with --leak-check=full to see details of leaked memory ==3417== ==3417== For counts of detected and suppressed errors, rerun with: -v ==3417== Use --track-origins=yes to see where uninitialised values come from ==3417== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 15 from 8) -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
