[Fedora-directory-commits] ldapserver/ldap/servers/snmp ldap-agent.h, 1.9, 1.10

Author: rmeggins Update of /cvs/dirsec/ldapserver/ldap/servers/snmp In directory cvs1.fedora.phx.redhat.com:/tmp/cvs-serv26931/ldapserver/ldap/servers/snmp Modified Files: ldap-agent.h Log Message: Bug Description: Need to address 64-bit compiler warnings - part 1 Reviewed by: nhosoi (Thanks!) Fix Description: The intptr_t and uintptr_t are types which are defined as integer types that are the same size as the pointer (void *) type. On the platforms we currently support, this is the same as long and unsigned long, respectively (ILP32 and LP64). However, intptr_t and uintptr_t are more portable. These can be used to assign a value passed as a void * to get an integer value, then "cast down" to an int or PRBool, and vice versa. This seems to be a common idiom in other applications where values must be passed as void *. For the printf/scanf formats, there is a standard header called inttypes.h which defines formats to use for various 64 bit quantities, so that you don't need to figure out if you have to use %lld or %ld for a 64-bit value - you just use PRId64 which is set to the correct value. I also assumed that size_t is defined as the same size as a pointer so I used the PRIuPTR format macro for size_t. I removed many unused variables and some unused functions. I put parentheses around assignments in conditional expressions to tell the compiler not to complain about them. I cleaned up some #defines that were defined more than once. I commented out some unused goto labels. Some of our header files shared among several source files define static variables. I made it so that those variables are not defined unless a macro is set in the source file. This avoids a lot of unused variable warnings. I added some return values to functions that were declared as returning a value but did not return a value. In all of these cases no one was checking the return value anyway. I put explicit parentheses around cases like this: expr || expr && expr - the && has greater precedence than the ||. The compiler complains because it wants you to make sure you mean expr || (expr && expr), not (expr || expr) && expr. I cleaned up several places where the compiler was complaining about possible use of uninitialized variables. There are still a lot of these cases remaining. There are a lot of warnings like this: lib/ldaputil/certmap.c:1279: warning: dereferencing type-punned pointer will break strict-aliasing rules These are due to our use of void ** to pass in addresses of addresses of structures. Many of these are calls to slapi_ch_free, but many are not - they are cases where we do not know what the type is going to be and may have to cast and modify the structure or pointer. I started replacing the calls to slapi_ch_free with slapi_ch_free_string, but there are many many more that need to be fixed. The dblayer code also contains a fix for https://bugzilla.redhat.com/show_bug.cgi?id=463991 - instead of checking for dbenv->foo_handle to see if a db "feature" is enabled, instead check the flags passed to open the dbenv. This works for bdb 4.2 through bdb 4.7 and probably other releases as well. Platforms tested: RHEL5 x86_64, Fedora 8 i386 Flag Day: no Doc impact: no Index: ldap-agent.h =================================================================== RCS file: /cvs/dirsec/ldapserver/ldap/servers/snmp/ldap-agent.h,v retrieving revision 1.9 retrieving revision 1.10 diff -u -r1.9 -r1.10 --- ldap-agent.h 10 Nov 2006 23:45:53 -0000 1.9 +++ ldap-agent.h 8 Oct 2008 17:29:04 -0000 1.10 @@ -47,7 +47,27 @@ extern "C" { #endif +/* net-snmp-config.h defines + all of these unconditionally - so we undefine + them here to make the compiler warnings shut up + hopefully we don't need the real versions + of these, but then with no warnings the compiler + will just silently redefine them to the wrong + ones anyway + Then undefine them after the include so that + our own local defines will take effect +*/ +#undef PACKAGE_BUGREPORT +#undef PACKAGE_NAME +#undef PACKAGE_STRING +#undef PACKAGE_TARNAME +#undef PACKAGE_VERSION #include <net-snmp/net-snmp-config.h> +#undef PACKAGE_BUGREPORT +#undef PACKAGE_NAME +#undef PACKAGE_STRING +#undef PACKAGE_TARNAME +#undef PACKAGE_VERSION #include <net-snmp/net-snmp-includes.h> #include <net-snmp/agent/net-snmp-agent-includes.h> #include <net-snmp/library/snmp_assert.h>