gcc-wwwdocs branch master updated. e37f2d6af29c52a51cb36058e3a7a2b79469f045

gcc-wwwdocs branch master updated. e37f2d6af29c52a51cb36058e3a7a2b79469f045

[jakub]

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "gcc-wwwdocs".

The branch, master has been updated
       via  e37f2d6af29c52a51cb36058e3a7a2b79469f045 (commit)
      from  223de66470c17e210f7e7ecceb054c7bb29d49d5 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit e37f2d6af29c52a51cb36058e3a7a2b79469f045
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Feb 14 09:09:44 2020 +0100

    wwwdocs: Mention common attribute

diff --git a/htdocs/gcc-10/porting_to.html b/htdocs/gcc-10/porting_to.html
index 980d3af1..9574aacc 100644
--- a/htdocs/gcc-10/porting_to.html
+++ b/htdocs/gcc-10/porting_to.html
@@ -41,7 +41,12 @@ and provide solutions. Let us know if you have suggestions for improvements!
   which means a linker error will now be reported.
   To fix this, use <code>extern</code> in header files when declaring global
   variables, and ensure each global is defined in exactly one C file.
-  As a workaround, legacy C code can be compiled with <code>-fcommon</code>.
+  If tentative definitions of particular variables need to be
+  placed in a common block, <code>__attribute__((__common__))</code> can be
+  used to force that behavior even in code compiled without
+  <code>-fcommon</code>.
+  As a workaround, legacy C code where all tentative definitions should
+  be placed into a common block can be compiled with <code>-fcommon</code>.
 </p>
   <pre><code>
       int x;  // tentative definition - avoid in header files

-----------------------------------------------------------------------

Summary of changes:
 htdocs/gcc-10/porting_to.html | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)


hooks/post-receive
-- 
gcc-wwwdocs