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don't check for stddef.h

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gdb already unconditionally includes stddef.h in many places.
I think there is no reason to check for its existence.

Also, Zack Weinberg's header file survey agrees:

    http://hacks.owlfolio.org/header-survey/

This patch removes the configure check and the inclusion guards.
It also removes a redundant inclusion that I noticed in defs.h.

2013-11-18  Tom Tromey  <tromey@redhat.com>

	* config.in: Rebuild.
	* configure: Rebuild.
	* configure.ac: Don't check for stddef.h.
	* defs.h: Unconditionally include stddef.h.  Remove duplicate
	inclusion.
This commit is contained in:
Tom Tromey 2013-11-06 07:36:46 -07:00
parent 2978b11100
commit 161d1bec16
5 changed files with 10 additions and 11 deletions
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8
gdb/ChangeLog
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@ -1,3 +1,11 @@
2013-11-18 Tom Tromey <tromey@redhat.com>
* config.in: Rebuild.
* configure: Rebuild.
* configure.ac: Don't check for stddef.h.
* defs.h: Unconditionally include stddef.h. Remove duplicate
inclusion.
2013-11-18 Tom Tromey <tromey@redhat.com>
* common/common.m4 (GDB_AC_COMMON): Don't use AC_HEADER_DIRENT.

3
gdb/config.in
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@ -378,9 +378,6 @@
/* Define to 1 if the system has the type `socklen_t'. */
#undef HAVE_SOCKLEN_T
/* Define to 1 if you have the <stddef.h> header file. */
#undef HAVE_STDDEF_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H

2
gdb/configure vendored
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@ -8756,7 +8756,7 @@ fi
# elf_hp.h is for HP/UX 64-bit shared library support.
for ac_header in nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
thread_db.h stddef.h \
thread_db.h \
stdlib.h sys/fault.h \
sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \

2
gdb/configure.ac
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@ -1075,7 +1075,7 @@ fi
AC_HEADER_STDC
# elf_hp.h is for HP/UX 64-bit shared library support.
AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
thread_db.h stddef.h \
thread_db.h \
stdlib.h sys/fault.h \
sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \

6
gdb/defs.h
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@ -48,9 +48,7 @@
included, so it's ok to blank out gstdint.h. */
#define GCC_GENERATED_STDINT_H 1
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#include <unistd.h>
@ -606,10 +604,6 @@ enum gdb_osabi
/* From other system libraries */
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif