[Mono-bugs] [Bug 656833] New: OdbcParameter.Bind() can pass a NULL pointer to SQLBindParameter

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Wed Dec 1 12:13:31 EST 2010



           Summary: OdbcParameter.Bind() can pass a NULL pointer to
    Classification: Mono
           Product: Mono: Class Libraries
           Version: SVN
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Sys.Data
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: Richard.Kettlewell at thales-esecurity.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---

User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.7
(KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7

I found that when I supplied a zero-length value to OdbcParameter, the
zero-length internal copy of it would be allocated as a null pointer which was
subsequently passed to SQLBindParameter.

The driver we are using rejects this.  (I guess some drivers are more
forgiving, although the MSDN documentation for SQLBindParameter does explicitly
mention a NULL parameter value pointer as a reason for returning an error.)

As a quick fix, I made OdbcParameter.AllocateBuffer check for a size of 0 and
use 1 instead.

Reproducible: Always

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