This is the mail archive of the glibc-bugs@sourceware.org mailing list for the glibc project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[Bug libc/11522] New: Uninitialised Variable in qsort_r


In short, the following extract from stdlib/msort.c, lines 182-185, shows the
variable phys_pages is used before initialization in a zero comparison. Is this
legal?

static long int phys_pages;
static int pagesize;

if (phys_pages == 0)

Furthermore, I have a question about qsort opening the /proc/meminfo file to get
the total available memory: I run ACM-ICPC-like contests and use a ptrace-based
sandbox software I wrote exactly for this. It keeps reporting a contestant is
opening a file when he/she is actually just qsort'ing some array. Is there a way
to prevent this behaviour?

Thank you.

-- 
           Summary: Uninitialised Variable in qsort_r
           Product: glibc
           Version: 2.10
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: lfsxs0 at gmail dot com
                CC: glibc-bugs at sources dot redhat dot com
 GCC build triplet: x86_64-pc-linux-gnu
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=11522

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]