# HG changeset patch
# User Bruno Haible <bruno@clisp.org>
# Date 1161863762 0
# Node ID 2d7222ab82dc83d5a549bd3feb33f7ae0f52c385
# Parent  4aea3bda39c7eec2f4f1c3a96464f37812ca1f9e
Make read-only array really read-only. Saves a few bytes in the .data segment.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2006-10-25  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* lib/mbchar.h (is_basic_table): Make read-only.
+	* lib/mbchar.c (is_basic_table): Likewise.
+	Reported by John Darrington.
+
 2006-10-25  Bruno Haible  <bruno@clisp.org>
 
 	* lib/progname.h (set_program_name): Undefine before defining.
diff --git a/lib/mbchar.c b/lib/mbchar.c
--- a/lib/mbchar.c
+++ b/lib/mbchar.c
@@ -24,7 +24,7 @@
 #if IS_BASIC_ASCII
 
 /* Bit table of characters in the ISO C "basic character set".  */
-unsigned int is_basic_table [UCHAR_MAX / 32 + 1] =
+const unsigned int is_basic_table [UCHAR_MAX / 32 + 1] =
 {
   0x00001a00,		/* '\t' '\v' '\f' */
   0xffffffef,		/* ' '...'#' '%'...'?' */
diff --git a/lib/mbchar.h b/lib/mbchar.h
--- a/lib/mbchar.h
+++ b/lib/mbchar.h
@@ -430,7 +430,7 @@
 /* The character set is ISO-646, not EBCDIC. */
 # define IS_BASIC_ASCII 1
 
-extern unsigned int is_basic_table[];
+extern const unsigned int is_basic_table[];
 
 static inline bool
 is_basic (char c)