Merge commit '05d9a4839c1ac792b9a3842e6bd0ad13c5316359'

src/ucd-tools/.gitignore

 install-sh
 libtool
 ltmain.sh
-m4/
 missing
 Makefile
 Makefile.in
 stamp-h1
 
+m4/*
+!m4/ax_check_compile_flag.m4
+
 # emscripten:
+
 a.out.js
 a.out.js.mem

src/ucd-tools/configure.ac

 
 AC_SUBST(UCD_VERSION)
 
+dnl ================================================================
+dnl Compiler warnings.
+dnl
+dnl Reference: https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
+dnl ================================================================
+
+AX_CHECK_COMPILE_FLAG([-Wmissing-prototypes],    [CFLAGS="-Wmissing-prototypes $CFLAGS"])
+AX_CHECK_COMPILE_FLAG([-Wreturn-type],           [CFLAGS="-Wreturn-type $CFLAGS"])
+
 dnl ================================================================
 dnl Generate output.
 dnl ================================================================

src/ucd-tools/m4/ax_check_compile_flag.m4

+# ===========================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
+#
+# DESCRIPTION
+#
+#   Check whether the given FLAG works with the current language's compiler
+#   or gives an error.  (Warnings, however, are ignored)
+#
+#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
+#   success/failure.
+#
+#   If EXTRA-FLAGS is defined, it is added to the current language's default
+#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
+#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
+#   force the compiler to issue an error when a bad flag is given.
+#
+#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
+#
+#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
+#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <[email protected]>
+#   Copyright (c) 2011 Maarten Bosmans <[email protected]>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 5
+
+AC_DEFUN([AX_CHECK_COMPILE_FLAG],
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
+  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
+    [AS_VAR_SET(CACHEVAR,[yes])],
+    [AS_VAR_SET(CACHEVAR,[no])])
+  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
+AS_VAR_IF(CACHEVAR,yes,
+  [m4_default([$2], :)],
+  [m4_default([$3], :)])
+AS_VAR_POPDEF([CACHEVAR])dnl
+])dnl AX_CHECK_COMPILE_FLAGS
+

src/ucd-tools/src/case.c

 
 #include <stddef.h>
 
-/* Unicode Character Data 9.0.0 */
+/* Unicode Character Data 10.0.0 */
 
 struct case_conversion_entry
 {

src/ucd-tools/src/categories.c

 #define Zs UCD_CATEGORY_Zs
 #define Ii UCD_CATEGORY_Ii
 
-/* Unicode Character Data 9.0.0 */
+/* Unicode Character Data 10.0.0 */
 
 static const uint8_t categories_Cn[256] =
 {
 	case Zl: case Zp: case Zs:
 		return UCD_CATEGORY_GROUP_Z;
 	case Ii:
+	default:
 		return UCD_CATEGORY_GROUP_I;
 	}
 }

src/ucd-tools/src/scripts.c

 #define Zyyy UCD_SCRIPT_Zyyy
 #define Zzzz UCD_SCRIPT_Zzzz
 
-/* Unicode Character Data 9.0.0 */
+/* Unicode Character Data 10.0.0 */
 
 static const uint8_t scripts_Latn[256] =
 {

src/ucd-tools/tests/printcdata.c

 }
 #endif
 
-void fput_utf8c(FILE *out, codepoint_t c)
+static void fput_utf8c(FILE *out, codepoint_t c)
 {
 	if (c < 0x80)
 		fputc((uint8_t)c, out);
 	}
 }
 
-int fget_utf8c(FILE *in, codepoint_t *c)
+static int fget_utf8c(FILE *in, codepoint_t *c)
 {
 	int ch = EOF;
 	if ((ch = fgetc(in)) == EOF) return 0;
 	return 1;
 }
 
-void uprintf_codepoint(FILE *out, codepoint_t c, char mode)
+static void uprintf_codepoint(FILE *out, codepoint_t c, char mode)
 {
 	switch (mode)
 	{
 	}
 }
 
-void uprintf_is(FILE *out, codepoint_t c, char mode)
+static void uprintf_is(FILE *out, codepoint_t c, char mode)
 {
 	switch (mode)
 	{
 	}
 }
 
-void uprintf(FILE *out, codepoint_t c, const char *format)
+static void uprintf(FILE *out, codepoint_t c, const char *format)
 {
 	while (*format) switch (*format)
 	{
 	}
 }
 
-void print_file(FILE *in, const char *format)
+static void print_file(FILE *in, const char *format)
 {
 	codepoint_t c = 0;
 	while (fget_utf8c(in, &c))

src/ucd-tools/tests/printucddata.c

 #include <string.h>
 #include <stdio.h>
 
-void fput_utf8c(FILE *out, codepoint_t c)
+static void fput_utf8c(FILE *out, codepoint_t c)
 {
 	if (c < 0x80)
 		fputc((uint8_t)c, out);
 	}
 }
 
-int fget_utf8c(FILE *in, codepoint_t *c)
+static int fget_utf8c(FILE *in, codepoint_t *c)
 {
 	int ch = EOF;
 	if ((ch = fgetc(in)) == EOF) return 0;
 	return 1;
 }
 
-void uprintf_codepoint(FILE *out, codepoint_t c, char mode)
+static void uprintf_codepoint(FILE *out, codepoint_t c, char mode)
 {
 	switch (mode)
 	{
 	}
 }
 
-void uprintf_is(FILE *out, codepoint_t c, char mode)
+static void uprintf_is(FILE *out, codepoint_t c, char mode)
 {
 	switch (mode)
 	{
 	}
 }
 
-void uprintf(FILE *out, codepoint_t c, const char *format)
+static void uprintf(FILE *out, codepoint_t c, const char *format)
 {
 	while (*format) switch (*format)
 	{
 	}
 }
 
-void print_file(FILE *in, const char *format)
+static void print_file(FILE *in, const char *format)
 {
 	codepoint_t c = 0;
 	while (fget_utf8c(in, &c))

src/ucd-tools/tools/categories.py

 	case Zl: case Zp: case Zs:
 		return UCD_CATEGORY_GROUP_Z;
 	case Ii:
+	default:
 		return UCD_CATEGORY_GROUP_I;
 	}
 }