GDB Hopelessly broken (CentOS 5.2, debugging Apache QPid)

[Joshua Kramer <josh at globalherald dot net>]

Hello Everyone,

I'm having some really bizarre problems debugging Apache Qpid under 
CentOS 5.2, and I'm wondering if anyone can shed some light on this.  
The application is compiled with -ggdb and no optimization (the -O2 
specified in the makefile was removed).

GDB (as supplied by the OS) is exhibiting odd behavior.  First, I keep 
getting the error about the source files being newer than the 
executable, even though:

1. I have manually deleted all object files and executables, then ran 
make, and
2. I verified that the executable is 30 minutes newer than any source file.

Next, it appears that some code does not get compiled.  If I set a 
breakpoint on line 335 of a certain file, it does not stop until line 
339.  Also, some variables do not get declared.  In the code example 
shown below, the seContext variable is never declared - that is, if I 
set the breakpoint on lines directly after I assign something to that 
variable, when gdb stops and I enter the command 'print seContext', gdb 
replies that there is no seContext in this scope.

Are these things a result of unseen compiler optimizations?  Any help is 
greatly appreciated.

Thanks!
-Joshua Kramer

(gdb) list 
/home/josh/dev/qpid/trunk/qpid/cpp/src/qpid/broker/SessionAdapter.cpp:325
320
321     void SessionAdapter::QueueHandlerImpl::declare(const string& 
name, const string& alternateExchange,
322                                                    bool passive, 
bool durable, bool exclusive,
323                                                    bool autoDelete, 
const qpid::framing::FieldTable& arguments)
324     {
325         AclModule* acl = getBroker().getAcl();
326        
327         std::string seContext;
328         //if (arguments.isSet("secontext"))
329         {

(gdb) list 
/home/josh/dev/qpid/trunk/qpid/cpp/src/qpid/broker/SessionAdapter.cpp:343
338             params.insert(make_pair(acl::PROP_EXCLUSIVE, 
std::string(exclusive ? "true" : "false")));
339             params.insert(make_pair(acl::PROP_AUTODELETE, 
std::string(autoDelete ? "true" : "false")));
340            
341             // JPK: Create some parameters from the arguments.
342            
343             //if (arguments.isSet("secontext"))
344                 {
345                     seContext = arguments.getAsString("secontext");
346                     params.insert(make_pair(acl::PROP_SECONTEXT, 
seContext));
347                 }
(gdb)