Compiler: MSP430 interrupt vector linkage

Tool/software: TI C/C++ Compiler

MSP430 Team,

Interrupt vectors get linked in the CCS generated linker .cmd file.  For populated vectors, the .cmd file uses a construct like this for example:

ECOMP0 : { * ( .int45 ) } > INT45 type = VECT_INIT

But for unpopulated (not implemented from a peripheral) vectors for a particular device, it uses a construct like this:

.int44 : {} > INT44

I'm wondering why the difference.  In other words, why isn't the ECOMP0 vector linked like this:

.int45 : {} > INT45

I understand what the type=VECT_INIT does, so I'm ignoring that above.

Thank you,

David