[Bug stdio/17829] Incorrect handling of precision specifier in printf family

["fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=17829

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |codonell at redhat dot com

--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Carlos, do you remember what the “32” in stdio-common/vfprintf.c guards
against?  (You helped to fix some overflow-related issues in this area.)

   1574       if (prec > width
   1575           && prec > sizeof (work_buffer) / sizeof (work_buffer[0]) -
32)
   1576         {
   1577           if (__glibc_unlikely (prec >= INT_MAX / sizeof (CHAR_T) -
32))
   1578             {
   1579               __set_errno (EOVERFLOW);
   1580               done = -1;
   1581               goto all_done;
   1582             }
   1583           size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T);

I'm a bit at a loss here.  Certainly, this use is not recommended because
printf will allocate tons of memory as part of the format processing.

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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/17825] Incorrect return value for string functions invoked with size_t parameter having the most significant bit set on Sparc V9
Date: Wed, 18 Feb 2015 14:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id\x17825

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security?

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