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bug#4434: marked as done (add -Wdeclaration-after-statement to CFLAGS if

From: Emacs bug Tracking System
Subject: bug#4434: marked as done (add -Wdeclaration-after-statement to CFLAGS if supported)
Date: Fri, 20 Nov 2009 16:35:09 +0000

Your message dated Fri, 20 Nov 2009 08:30:51 -0800 (PST)
with message-id <address@hidden>
and subject line Re: bug#4434: add -Wdeclaration-after-statement to CFLAGS if 
has caused the Emacs bug report #4434,
regarding add -Wdeclaration-after-statement to CFLAGS if supported
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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4434: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=4434
Emacs Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: add -Wdeclaration-after-statement to CFLAGS if supported Date: Mon, 14 Sep 2009 12:16:16 -0700 (PDT)
Recently we've had a few instances of declarations being added in the
middle of a block.

gcc has a flag to warn about this.

Here's a patch to add this flag to CFLAGS (it mirrors what we already do
for  -Wno-pointer-sign).

OK to check in?

Index: configure.in
RCS file: /cvsroot/emacs/emacs/configure.in,v
retrieving revision 1.607
diff -u -3 -p -u -p -r1.607 configure.in
--- configure.in 23 Aug 2009 02:15:00 -0000     1.607
+++ configure.in 14 Sep 2009 18:46:36 -0000
@@ -757,6 +757,19 @@ CFLAGS="$SAVE_CFLAGS"
 unset has_option
+### Use -Wdeclaration-after-statement if the compiler supports it
+AC_MSG_CHECKING([whether gcc understands
+CFLAGS="$CFLAGS -Wdeclaration-after-statement"
+AC_TRY_COMPILE([], [], has_option=yes, has_option=no,)
+if test $has_option = yes; then
+   C_WARNINGS_SWITCH="-Wdeclaration-after-statement $C_WARNINGS_SWITCH"
+unset has_option
 #### Some other nice autoconf tests.
 dnl checks for programs

--- End Message ---
--- Begin Message --- Subject: Re: bug#4434: add -Wdeclaration-after-statement to CFLAGS if supported Date: Fri, 20 Nov 2009 08:30:51 -0800 (PST)
Stefan Monnier <address@hidden> writes:

  > > Stefan, any reason not to check this in?
  > Try it,

Done. Thanks.

--- End Message ---

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