gdb: no longer define __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS

My gnulib fix at:
  https://lists.gnu.org/archive/html/bug-gnulib/2015-11/msg00010.html
was merged upstream meanwhile and our gnulib copy now includes it.

As a concidence, Kevin was telling me today that these macros are
causing a build problem on FreeBSD:

common/common-defs.h:47:0: error: "__STDC_CONSTANT_MACROS" redefined [-Werror]
  #define __STDC_CONSTANT_MACROS 1
  /usr/include/sys/cdefs.h:408:0: note: this is the location of the previous definition
  #define __STDC_CONSTANT_MACROS
(and a similar error for __STDC_LIMIT_MACROS)

The problem seems to be that we should be defining these input macros
before including any system header, but, we're not.

So let's just revert e063da67902e ([C++] Define __STDC_CONSTANT_MACROS
/ __STDC_LIMIT_MACROS for stdint.h).  If this causes a problem
somewhere, we can re-define the macros higher up in the file, before
system headers are included.

gdb/ChangeLog:
2016-10-18  Pedro Alves  <palves@redhat.com>

	* common/common-defs.h (__STDC_CONSTANT_MACROS)
	(__STDC_LIMIT_MACROS): Delete.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7dd1b32..80215df 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2016-10-18  Pedro Alves  <palves@redhat.com>
 
+       * common/common-defs.h (__STDC_CONSTANT_MACROS)
+       (__STDC_LIMIT_MACROS): Delete.
+
+2016-10-18  Pedro Alves  <palves@redhat.com>
+
        * gnulib/update-gnulib.sh (GNULIB_COMMIT_SHA1): Set to
        2692e23a48e21f6daa029e8af9f1a143b7532f47.
        * gnulib/configure, gnulib/config.in, gnulib/aclocal.m4:

diff --git a/gdb/common/common-defs.h b/gdb/common/common-defs.h
index 5426dd5..9b5d853 100644 (file)
--- a/gdb/common/common-defs.h
+++ b/gdb/common/common-defs.h
@@ -31,23 +31,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stddef.h>
-
-/* From:
-    https://www.gnu.org/software/gnulib/manual/html_node/stdint_002eh.html
-
-   "On some hosts that predate C++11, when using C++ one must define
-   __STDC_CONSTANT_MACROS to make visible the definitions of constant
-   macros such as INTMAX_C, and one must define __STDC_LIMIT_MACROS to
-   make visible the definitions of limit macros such as INTMAX_MAX."
-
-   gnulib doesn't fix this for us correctly yet.  See:
-     https://lists.gnu.org/archive/html/bug-gnulib/2015-11/msg00004.html
-
-   Meanwhile, explicitly define these ourselves, as C99 intended.  */
-#define __STDC_CONSTANT_MACROS 1
-#define __STDC_LIMIT_MACROS 1
 #include <stdint.h>
-
 #include <string.h>
 #ifdef HAVE_STRINGS_H
 #include <strings.h>   /* for strcasecmp and strncasecmp */