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From: markmaker (@markmaker) <[email protected]>
To: postgresql-interfaces/psqlodbc <[email protected]>
Subject: Re: [postgresql-interfaces/psqlodbc] PR #145: SQL_C_BINARY data buffer uses NULL terminator, but realloc() may be missed
Date: Fri, 21 Nov 2025 18:29:52 +0000
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

I'm trying to compile the driver myself. Any feedback very welcome. So far I managed to scratch this together:

```sh
# this is on a Kubuntu 25.04 with installation according
# to https://wiki.postgresql.org/wiki/Apt (modernized).

sudo apt-get install unixodbc odbcinst unixodbc-dev libpq-dev

# my PR version
git clone https://github.com/markmaker/psqlodbc.git

./bootstrap

# if somebody knows a better/automatic/more correct way to configure these paths, please speak up 🤠
./configure \
  --with-unixodbc=/usr/include/x86_64-linux-gnu/unixODBC/ \
  --with-libpq=/usr/include/postgresql \
  --enable-pthreads \
  CPPFLAGS="-DSQLCOLATTRIBUTE_SQLLEN"

make

sudo make install
```

Then I copied the regular `[PostgreSQL Unicode]` section in the `/etc/odbcinst.ini` to have the `/usr/local/lib/` path prefix where make install reported it installed:

```ini
...
[PostgreSQL Unicode Fixed]
Description=PostgreSQL ODBC driver (Unicode version)
Driver=/usr/local/lib/psqlodbcw.so
Setup=/usr/local/lib/libodbcpsqlS.so
Debug=0
CommLog=1
UsageCount=2
```

Then I changed my driver connect to point to the new one...

`"DRIVER={PostgreSQL Unicode Fixed};SERVER=..."`

... tested again and it seems the problem is gone!   🎈🎉

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  To: github://postgresql-interfaces/psqlodbc
  Cc: [email protected], [email protected]
  Subject: Re: [postgresql-interfaces/psqlodbc] PR #145: SQL_C_BINARY data buffer uses NULL terminator, but realloc() may be missed
  In-Reply-To: <<[email protected]>>

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