[Valgrind-users] --gen-suppressions still not working very well

[Nuno L. <nun...@sa...>]

Hi,

I'm already using a valgrind 3.2.2 patch provided by Julian Seward himself
(http://sourceforge.net/mailarchive/message.php?msg_id=37706183),
but --gen-suppressions is still not working for some edge cases.

For example:
==17024== Invalid read of size 8
==17024==    at 0x87839B8: (within /p2/var/php_gcov/PHP_HEAD/sapi/cli/php)
==17024==  Address 0x6C380E8 is 96 bytes inside a block of size 102 alloc'd
==17024==    at 0x401DD95: realloc (vg_replace_malloc.c:306)
==17024==    by 0x57EE3E3: nlolgserv (in
/p2/usr/lib/oracle/xe/app/oracle/produc/10.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x57EE787: nlolgobj (in
/p2/usr/lib/oracle/xe/app/oracle/product10.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x56E49A1: nnfun2a (in
/p2/usr/lib/oracle/xe/app/oracle/product/0.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x56E4613: nnfsn2a (in
/p2/usr/lib/oracle/xe/app/oracle/product/0.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x57256C4: niqname (in
/p2/usr/lib/oracle/xe/app/oracle/product/0.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x5650D14: kwfnran (in
/p2/usr/lib/oracle/xe/app/oracle/product/0.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x5619E33: kwfcinit (in
/p2/usr/lib/oracle/xe/app/oracle/product10.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x547D59A: kpuatch (in
/p2/usr/lib/oracle/xe/app/oracle/product/0.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x5597990: OCIServerAttach (in
/p2/usr/lib/oracle/xe/app/oracle/roduct/10.2.0/server/lib/libclntsh.so.10.1)
==17024==    by 0x8252F3E: php_oci_do_connect_ex (oci8.c:1282)
==17024==    by 0x825092A: php_oci_do_connect (oci8.c:1005)
{
   <insert a suppression name here>
   Memcheck:Addr8
   obj:/p2/var/php_gcov/PHP_HEAD/sapi/cli/php
}


The generated suppression should (in theory) suppress all
invalid-read-size-8 errors from the php binary, so it is pretty useless (I
want to fetch them afterall).
I already tried a few combinations of suppressions, but I wasn't able to
shut it up, like:
{
   oracleXE6
   Memcheck:Value8
   obj:/p2/var/php_gcov/*/sapi/cli/php (with and without this line)
   fun:realloc
   fun:nlolgserv
   obj:/p2/usr/lib/oracle/xe/app/oracle/product/10.2.0/server/lib/libclntsh.so.10.1
}


Can you help me (again) sorting out this problem please?

Thanks,
Nuno