From: Francois-Xavier Le Bail <fx.lebail@yahoo.com>
Date: Wed, 29 Jul 2015 11:50:38 +0000 (+0200)
Subject: Compile with -Wshadow
X-Git-Tag: tcpdump-4.8.0~202
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/a9d6fee301938c5a1d2033bf8b8f09db19efca5b?ds=inline

Compile with -Wshadow
---

diff --git a/aclocal.m4 b/aclocal.m4
index 223f9384..18d7ea68 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -948,6 +948,7 @@ AC_DEFUN(AC_LBL_DEVEL,
 		    AC_LBL_CHECK_COMPILER_OPT($1, -Wwrite-strings)
 		    AC_LBL_CHECK_COMPILER_OPT($1, -Wpointer-arith)
 		    AC_LBL_CHECK_COMPILER_OPT($1, -Wcast-qual)
+		    AC_LBL_CHECK_COMPILER_OPT($1, -Wshadow)
 		    AC_LBL_CHECK_COMPILER_OPT($1, -W)
 	    fi
 	    AC_LBL_CHECK_DEPENDENCY_GENERATION_OPT()
diff --git a/configure b/configure
index 2b0e1b54..0c96b17b 100755
--- a/configure
+++ b/configure
@@ -7848,6 +7848,38 @@ fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports the -Wshadow option" >&5
+$as_echo_n "checking whether the compiler supports the -Wshadow option... " >&6; }
+	save_CFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS $ac_lbl_cc_force_warning_errors -Wshadow"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+return 0
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+		CFLAGS="$save_CFLAGS"
+		V_CCOPT="$V_CCOPT -Wshadow"
+
+else
+
+		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+		CFLAGS="$save_CFLAGS"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports the -W option" >&5
 $as_echo_n "checking whether the compiler supports the -W option... " >&6; }
 	save_CFLAGS="$CFLAGS"