[PATCH] MinGW: Add support for 'strnlen' prototype to BFD.

[Meador Inge <meadori at codesourcery dot com>]

Hi All,

Commit e9847026c92f330f18863a7b9cb0aaa299345559 to fix PR binutils/16664
added two calls to `strnlen' which is not supplied by MinGW.  We already
handle the necessary configure logic on the 'binutils' side.  I added
the same check on the 'bfd' side and pulled the prototypes into 'sysdep.h'
on each side to fix the issue.

OK?

P.S. I already have write after approval for GDB and GCC. Can I commit to
Binutils as well?  If not, then can someone please apply this for me?
Or just give me access? :-)

bfd/

2014-03-13  Meador Inge  <meadori@codesourcery.com>

	 * configure.in: Add strnlen to AC_CHECK_DECLS.
	 * config.in: Regenerate.
         * configure: Regenerate.
	 * sysdep.h (strnlen): Add prototype.

binutils/

2014-03-13  Meador Inge  <meadori@codesourcery.com>

         * dwarf.c (strnlen): Move prototype ...
	 * sysdep.h (strnlen): ... to here.

---
 bfd/config.in     |    4 ++++
 bfd/configure     |   11 +++++++++++
 bfd/configure.in  |    1 +
 bfd/sysdep.h      |    4 ++++
 binutils/dwarf.c  |    4 ----
 binutils/sysdep.h |    4 ++++
 6 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/bfd/config.in b/bfd/config.in
index 3106c28..05829e2 100644
--- a/bfd/config.in
+++ b/bfd/config.in
@@ -64,6 +64,10 @@
    */
 #undef HAVE_DECL_STPCPY
 
+/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRNLEN
+
 /* Define to 1 if you have the declaration of `strstr', and to 0 if you don't.
    */
 #undef HAVE_DECL_STRSTR
diff --git a/bfd/configure b/bfd/configure
index fbf5f44..c5cb2a1 100755
--- a/bfd/configure
+++ b/bfd/configure
@@ -13766,6 +13766,17 @@ cat >>confdefs.h <<_ACEOF
 #define HAVE_DECL_VSNPRINTF $ac_have_decl
 _ACEOF
 
+ac_fn_c_check_decl "$LINENO" "strnlen" "ac_cv_have_decl_strnlen" "$ac_includes_default"
+if test "x$ac_cv_have_decl_strnlen" = x""yes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_STRNLEN $ac_have_decl
+_ACEOF
+
 
 # Link in zlib if we can.  This allows us to read compressed debug sections.
 # This is used only by compress.c.
diff --git a/bfd/configure.in b/bfd/configure.in
index f1ec965..af98f62 100644
--- a/bfd/configure.in
+++ b/bfd/configure.in
@@ -239,6 +239,7 @@ AC_CHECK_DECLS(stpcpy)
 AC_CHECK_DECLS(strstr)
 AC_CHECK_DECLS(snprintf)
 AC_CHECK_DECLS(vsnprintf)
+AC_CHECK_DECLS(strnlen)
 
 # Link in zlib if we can.  This allows us to read compressed debug sections.
 # This is used only by compress.c.
diff --git a/bfd/sysdep.h b/bfd/sysdep.h
index a30da90..7e441eb 100644
--- a/bfd/sysdep.h
+++ b/bfd/sysdep.h
@@ -170,6 +170,10 @@ extern int fseeko64 (FILE *stream, off64_t offset, int whence);
 #endif
 #endif
 
+#if !HAVE_DECL_STRNLEN
+size_t strnlen (const char *, size_t);
+#endif
+
 /* Define offsetof for those systems which lack it */
 
 #ifndef offsetof
diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index aa8a1df..c8360b5 100644
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -29,10 +29,6 @@
 #include "dwarf.h"
 #include "gdb/gdb-index.h"
 
-#if !HAVE_DECL_STRNLEN
-size_t strnlen (const char *, size_t);
-#endif
-
 static const char *regname (unsigned int regno, int row);
 
 static int have_frame_base;
diff --git a/binutils/sysdep.h b/binutils/sysdep.h
index 3312925..689e8c9 100644
--- a/binutils/sysdep.h
+++ b/binutils/sysdep.h
@@ -112,6 +112,10 @@ extern int snprintf(char *, size_t, const char *, ...);
 extern int vsnprintf(char *, size_t, const char *, va_list);
 #endif
 
+#if !HAVE_DECL_STRNLEN
+size_t strnlen (const char *, size_t);
+#endif
+
 #ifndef O_RDONLY
 #define O_RDONLY 0
 #endif
-- 
1.7.9.5