[980307]: Warning patches #1/5 - signed vs. unsigned.

[Kaveh R. Ghazi]

 > From: Jim Wilson <wilson@cygnus.com>
 > 
 > This is OK to install.
 > 
 > I see that you have an enquire.c change.  The enquire.c copyright requires
 > that we document all changes near the top of the file.  Please add such a
 > change similar to the existing changes.
 > 
 > 	In dwarf2out.c (reg_save) I added a FIXME comment to highlight a
 > 	comparison of an unsigned variable with -1 in an if statement!
 > 
 > 	!   if (sreg == -1)	/* FIXME: How can this be -1? It is an unsigned!  */
 > 
 > 	Can someone who's more experienced with this particular code take a look?
 > 
 > The code is correct.  -1 is used to indicate that the value isn't a register
 > number.  The -1 just gets casted to unsigned, and becomes UINT_MAX.  It may
 > not be pretty, but I think it should always work.
 > Jim

	In that case, when Manfred checks it in, the -1 should be
explicitly cast to unsigned (to silence the warning) with a comment
stuck on top of it (eg, your words above.)  Yes?

		--Kaveh
--
Kaveh R. Ghazi			Project Manager / Custom Development
ghazi@caip.rutgers.edu		Icon CMT Corp.