[Debian-lego-team] Bug#848962: nqc: Segfaults with -TSwan -L

[Petter Reinholdtsen]

Package: nqc
Version: 3.1.r6-1

Running nqc with -TSwan -L segfaults.  Here is a demonstration:

% cat web2.nqc 
task main()
{
}
% valgrind nqc -TSwan -L web2.nqc
==26607== Memcheck, a memory error detector
==26607== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==26607== Using Valgrind-3.12.0 and LibVEX; rerun with -h for copyright info
==26607== Command: nqc -TSwan -L web2.nqc
==26607== 
==26607== 
==26607== Process terminating with default action of signal 11 (SIGSEGV)
==26607==  Bad permissions for mapped region at address 0x43D4E0
==26607==    at 0x41BC6D: ??? (in /usr/bin/nqc)
==26607==    by 0x41BEB5: ??? (in /usr/bin/nqc)
==26607==    by 0x41F375: ??? (in /usr/bin/nqc)
==26607==    by 0x404259: ??? (in /usr/bin/nqc)
==26607==    by 0x402275: ??? (in /usr/bin/nqc)
==26607==    by 0x56F42B0: (below main) (libc-start.c:291)
==26607== 
==26607== HEAP SUMMARY:
==26607==     in use at exit: 229,107 bytes in 4,197 blocks
==26607==   total heap usage: 5,845 allocs, 1,648 frees, 427,541 bytes allocated
==26607== 
==26607== LEAK SUMMARY:
==26607==    definitely lost: 32 bytes in 1 blocks
==26607==    indirectly lost: 27 bytes in 2 blocks
==26607==      possibly lost: 65,512 bytes in 2,562 blocks
==26607==    still reachable: 163,536 bytes in 1,632 blocks
==26607==         suppressed: 0 bytes in 0 blocks
==26607== Rerun with --leak-check=full to see details of leaked memory
==26607== 
==26607== For counts of detected and suppressed errors, rerun with: -v
==26607== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Segmentation fault
%

I came across this problem in Ubuntu,
<URL: https://bugs.launchpad.net/ubuntu/+source/nqc/+bug/436456 >.
--
Happy hacking
Petter Reinholdtsen