So boring

Now I know...

Self-documenting code

trunk/Source/WebKit2/Platform/CoreIPC/Connection.h

enum MessageSendFlags {
    // Whether this message should be dispatched when waiting for a sync reply.
    // This is the default for synchronous messages.
    DispatchMessageEvenWhenWaitingForSyncReply = 1 << 0,
};

[..]

virtual Vector windowsToReceiveSentMessagesWhileWaitingForSyncReply() = 0;

[..]

void setOnlySendMessagesAsDispatchWhenWaitingForSyncReplyWhenProcessingSuchAMessage(bool);
void setShouldExitOnSyncMessageSendFailure(bool shouldExitOnSyncMessageSendFailure);

[..]

bool m_onlySendMessagesAsDispatchWhenWaitingForSyncReplyWhenProcessingSuchAMessage;
bool m_shouldExitOnSyncMessageSendFailure;
DidCloseOnConnectionWorkQueueCallback m_didCloseOnConnectionWorkQueueCallback;


and so on :-)

Thanks to Anatoly Vorobey for pointing.

GNU C Family Extensions

Some time ago I met confusing C ternary operator usage

return timeout ?: 1;

It turned out to be a GNU "Conditionals with Omitted Operands" 

C extension. The list of "Extensions to the C Language Family" can be found here.

This page is worth reading. For example, getting

the address of a label defined in the current function (or a containing
function) with the unary operator `&&'. The value has type void *. This value
is a constant and can be used wherever a constant of that type is valid.
For example:

     void *ptr;
     /* ... */
     ptr = &&foo;

To use these values, you need to be able to jump to one. This is done with
the computed goto statement, goto *exp;.
For example,

     goto *ptr;