Make read-only array really read-only. Saves a few bytes in the .data segment.

diff --git a/ChangeLog b/ChangeLog
index bf98685800da2da573dd91a0febfc18ed31ef885..7b0200f183b7831182eaedcda958c01cf1bc8287 100644 (file)
--- 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
index 590109bd6250dd546f29263c4ddf6f705c9f4b4d..95373f58ba4f35851b222a38e78ed6292f3bfdc0 100644 (file)
--- 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
index bf31027ce48964abdbd141d086d6db1c849824a6..13578356bdb5bd3e5660c2ca3cd7ee34656e1607 100644 (file)
--- a/lib/mbchar.h
+++ b/lib/mbchar.h
@@ -430,7 +430,7 @@ mb_copy (mbchar_t *new, const mbchar_t *old)
 /* 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)