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Embedded SQL library bug

From: David Flater <dflater(at)nist(dot)gov>
To: pgsql-bugs(at)postgresql(dot)org
Subject: Embedded SQL library bug
Date: 2004-05-21 21:03:40
Message-ID: 20040521210340.GA24507@cme.nist.gov (view raw or flat)
Thread:
Lists: pgsql-bugs
============================================================================
                        POSTGRESQL BUG REPORT TEMPLATE
============================================================================


Your name		:	David Flater
Your email address	:       dflater(at)nist(dot)gov


System Configuration
---------------------
  Architecture (example: Intel Pentium)  	:  Sun Ultrasparc 60

  Operating System (example: Linux 2.4.18) 	:  SunOS 5.8

  PostgreSQL version (example: PostgreSQL-7.4.2):   PostgreSQL-7.4.2

  Compiler used (example:  gcc 2.95.2)		:  gcc 3.2


Please enter a FULL description of your problem:
------------------------------------------------

In Embedded SQL, sometimes get segmentation faults on selecting part
or all of a float8[] array into a char array.

(gdb) where
#0  0xff233da0 in strncpy () from /usr/lib/libc.so.1
#1  0xff376780 in ECPGget_data () from /private/pgsql/lib/libecpg.so.4
#2  0xff37345c in ECPGstore_result () from /private/pgsql/lib/libecpg.so.4
#3  0xff374cc8 in ECPGexecute () from /private/pgsql/lib/libecpg.so.4
#4  0xff3751dc in ECPGdo () from /private/pgsql/lib/libecpg.so.4
#5  0x00010a58 in main (argc=1, argv=0xffbef384) at crashme.pgc:45

The attached example reproduces the failure on PostgreSQL 7.4.2 under
Solaris.  The problem was also experienced by a colleague who was
using Linux but I haven't tested the example under Linux.



Please describe a way to repeat the problem.   Please try to provide a
concise reproducible example, if at all possible: 
----------------------------------------------------------------------

I have attached a tar file containing a program, makefile, and log of
my results.

Do this:

createdb crashme
make
./crashme




If you know how this problem might be fixed, list the solution below:
---------------------------------------------------------------------

N/A

-- 
David Flater, National Institute of Standards and Technology, U.S.A.

Attachment: bug.tar.gz
Description: application/x-tar-gz (1.7 KB)

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Next:From: Michael MeskesDate: 2004-05-22 11:26:43
Subject: Re: Embedded SQL library bug
Previous:From: PAvilesDate: 2004-05-21 20:15:07
Subject: A memory leak. Postgres 7.4. Mac OS. X Server

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