On Mon, Jul 18, 2022 at 8:35 AM Ganesh Mali <[email protected]>
wrote:
> Recently we got ownership of a legacy piece of code with no knowledge
> transfer and we cannot figure out why a certain line of code with
> apr_dbd_pselect results in segmentation fault in the c code which is
> deployed on Apache 2.4 using mysql on Amazon Linux2. The same piece of c
> code works perfectly fine on Apache 2.2 and Centos with mysql same version.
> Code in question is as follows. And the line throwing the seg fault is the
> second call to apr_dbd_pselect (second last line in the code).
>
snip
/* jdh -- table_name is not used can be used for prepared statement hash name */
> jstmt = apr_hash_get(dbd->prepared,table_name,APR_HASH_KEY_STRING);
> if (NULL == jstmt) {
> fprintf(stderr,"%s.%d Could not find prepared statement:
> %s\n",__FILE__, __LINE__,table_name); fflush(stderr);
> return "";
> }
>
> const char *arglist[2];
> arglist[0] = arg1;
>
>
I recommend to init arglist[1] to NULL here.
Cheers
Nathan
