* [Patch][Docs] Update dllimport documentation
@ 2007-11-10 11:36 Danny Smith
2007-11-12 4:25 ` Mark Mitchell
0 siblings, 1 reply; 2+ messages in thread
From: Danny Smith @ 2007-11-10 11:36 UTC (permalink / raw)
To: gcc-patches
The rewrite of dllimport code in March
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123344
allowed pointers to dllimport'd functions
to be used as constant initializers. This documents that change.
Tested on i686-pc-mingw32.
2007-11-09 Danny Smith <dannysmith@users.sourceforge.net>
* doc/extend.texi (dllimport): Document that pointers to dllimport'd
functions can be used as constant.
Index: extend.texi
===================================================================
--- extend.texi (revision 129972)
+++ extend.texi (working copy)
@@ -2126,9 +2126,12 @@
functions, using the attribute for a variable eliminates a thunk in
the DLL@.
-One drawback to using this attribute is that a pointer to a function
-or variable marked as @code{dllimport} cannot be used as a constant
-address. On Microsoft Windows targets, the attribute can be disabled
+One drawback to using this attribute is that a pointer to a
+@emph{variable} marked as @code{dllimport} cannot be used as a constant
+address. However, a pointer to a @emph{function} with the
+@code{dllimport} attribute can be used as a constant initializer; in
+this case, the address of a stub function in the import lib is
+referenced. On Microsoft Windows targets, the attribute can be disabled
for functions by setting the @option{-mnop-fun-dllimport} flag.
@item eightbit_data
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Patch][Docs] Update dllimport documentation
2007-11-10 11:36 [Patch][Docs] Update dllimport documentation Danny Smith
@ 2007-11-12 4:25 ` Mark Mitchell
0 siblings, 0 replies; 2+ messages in thread
From: Mark Mitchell @ 2007-11-12 4:25 UTC (permalink / raw)
To: Danny Smith; +Cc: gcc-patches
Danny Smith wrote:
> 2007-11-09 Danny Smith <dannysmith@users.sourceforge.net>
>
> * doc/extend.texi (dllimport): Document that pointers to dllimport'd
> functions can be used as constant.
OK.
--
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2007-11-12 1:43 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-11-10 11:36 [Patch][Docs] Update dllimport documentation Danny Smith
2007-11-12 4:25 ` Mark Mitchell
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).