Commit: patch 9.2.0298: Some internal variables are not modified

[Christian Brabandt]

patch 9.2.0298: Some internal variables are not modified

Commit: https://github.com/vim/vim/commit/3c79e33aeb0c26534c749a35d35a331613104d57
Author: Hirohito Higashi <h.eas...@gmail.com>
Date: Sat Apr 4 09:09:13 2026 +0000

patch 9.2.0298: Some internal variables are not modified

Problem: Some internal variables are not modified
Solution: Add const qualifier to static table data
(Hirohito Higashi).

Several static arrays that are never modified at runtime were missing the
const qualifier. Add const to move them from .data to .rodata section.

closes: #19901

Signed-off-by: Hirohito Higashi <h.eas...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/crypt.c b/src/crypt.c
index 794594f91..2fade5db9 100644
--- a/src/crypt.c
+++ b/src/crypt.c
@@ -342,7 +342,7 @@ sodium_enabled(int verbose)
#endif

#define CRYPT_MAGIC_LEN 12 // cannot change
-static char crypt_magic_head[] = "VimCrypt~";
+static const char crypt_magic_head[] = "VimCrypt~";

/*
* Return int value for crypt method name.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 7dfc1d56c..7834f2bdb 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -2734,7 +2734,7 @@ ex_errmsg(char *msg, char_u *arg)
* The "+" string used in place of an empty command in Ex mode.
* This string is used in pointer comparison.
*/
-static char exmode_plus[] = "+";
+static const char exmode_plus[] = "+";

/*
* Handle a range without a command.
diff --git a/src/hardcopy.c b/src/hardcopy.c
index 533311604..55d438418 100644
--- a/src/hardcopy.c
+++ b/src/hardcopy.c
@@ -1394,7 +1394,7 @@ static int prt_use_courier;
static int prt_in_ascii;
static int prt_half_width;
static char *prt_ascii_encoding;
-static char_u prt_hexchar[] = "0123456789abcdef";
+static const char_u prt_hexchar[] = "0123456789abcdef";

static void
prt_write_file_raw_len(char_u *buffer, int bytes)
diff --git a/src/memline.c b/src/memline.c
index 35b1fae23..886f08f97 100644
--- a/src/memline.c
+++ b/src/memline.c
@@ -69,7 +69,7 @@ typedef struct pointer_entry PTR_EN; // block/line-count pair
#define BLOCK0_ID1_C4 's' // block 0 id 1 'cm' 4

#if defined(FEAT_CRYPT)
-static int id1_codes[] = {
+static const int id1_codes[] = {
BLOCK0_ID1_C0, // CRYPT_M_ZIP
BLOCK0_ID1_C1, // CRYPT_M_BF
BLOCK0_ID1_C2, // CRYPT_M_BF2
diff --git a/src/pty.c b/src/pty.c
index 55bbf94d5..c615785c7 100644
--- a/src/pty.c
+++ b/src/pty.c
@@ -354,15 +354,15 @@ mch_openpty(char **ttyn)
#ifndef PTY_DONE

# ifdef hpux
-static char PtyProto[] = "/dev/ptym/ptyXY";
-static char TtyProto[] = "/dev/pty/ttyXY";
+static const char PtyProto[] = "/dev/ptym/ptyXY";
+static const char TtyProto[] = "/dev/pty/ttyXY";
# else
# ifdef __HAIKU__
-static char PtyProto[] = "/dev/pt/XY";
-static char TtyProto[] = "/dev/tt/XY";
+static const char PtyProto[] = "/dev/pt/XY";
+static const char TtyProto[] = "/dev/tt/XY";
# else
-static char PtyProto[] = "/dev/ptyXY";
-static char TtyProto[] = "/dev/ttyXY";
+static const char PtyProto[] = "/dev/ptyXY";
+static const char TtyProto[] = "/dev/ttyXY";
# endif
# endif

diff --git a/src/regexp.c b/src/regexp.c
index 6ac74467f..54fadc899 100644
--- a/src/regexp.c
+++ b/src/regexp.c
@@ -377,7 +377,7 @@ static int reg_strict; // "[abc" is illegal
*/

// META[] is used often enough to justify turning it into a table.
-static char_u META_flags[] = {
+static const char_u META_flags[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// % & ( ) * + .
@@ -2908,7 +2908,7 @@ static regengine_T nfa_regengine =
static int regexp_engine = 0;

#ifdef DEBUG
-static char_u regname[][30] = {
+static const char_u regname[][30] = {
"AUTOMATIC Regexp Engine",
"BACKTRACKING Regexp Engine",
"NFA Regexp Engine"
diff --git a/src/regexp_bt.c b/src/regexp_bt.c
index 063510c64..a2877fc8d 100644
--- a/src/regexp_bt.c
+++ b/src/regexp_bt.c
@@ -253,7 +253,7 @@ static int one_exactly = FALSE; // only do one char for EXACTLY

// When making changes to classchars also change nfa_classcodes.
static char_u *classchars = (char_u *)".iIkKfFpPsSdDxXoOwWhHaAlLuU";
-static int classcodes[] = {
+static const int classcodes[] = {
ANY, IDENT, SIDENT, KWORD, SKWORD,
FNAME, SFNAME, PRINT, SPRINT,
WHITE, NWHITE, DIGIT, NDIGIT,
diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index b17d4d349..610c6bd67 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -233,7 +233,7 @@ enum
};

// Keep in sync with classchars.
-static int nfa_classcodes[] = {
+static const int nfa_classcodes[] = {
NFA_ANY, NFA_IDENT, NFA_SIDENT, NFA_KWORD,NFA_SKWORD,
NFA_FNAME, NFA_SFNAME, NFA_PRINT, NFA_SPRINT,
NFA_WHITE, NFA_NWHITE, NFA_DIGIT, NFA_NDIGIT,
diff --git a/src/term.c b/src/term.c
index bdf81bd61..da63f8a84 100644
--- a/src/term.c
+++ b/src/term.c
@@ -689,7 +689,7 @@ static tcap_entry_T builtin_sync_output[] = {
/*
* List of DECRQM modes that Vim supports
*/
-static int dec_modes[] = {
+static const int dec_modes[] = {
2026, // Synchronized output
#ifdef UNIX
2048 // In-band terminal resize events
@@ -7827,11 +7827,11 @@ swap_tcap(void)


#if (defined(MSWIN) && (!defined(FEAT_GUI_MSWIN) || defined(VIMDLL))) || defined(FEAT_TERMINAL)
-static int cube_value[] = {
+static const int cube_value[] = {
0x00, 0x5F, 0x87, 0xAF, 0xD7, 0xFF
};

-static int grey_ramp[] = {
+static const int grey_ramp[] = {
0x08, 0x12, 0x1C, 0x26, 0x30, 0x3A, 0x44, 0x4E, 0x58, 0x62, 0x6C, 0x76,
0x80, 0x8A, 0x94, 0x9E, 0xA8, 0xB2, 0xBC, 0xC6, 0xD0, 0xDA, 0xE4, 0xEE
};
diff --git a/src/version.c b/src/version.c
index abd3f91c0..e3dee3b3a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -734,6 +734,8 @@ static char *(features[]) =

static int included_patches[] =
{ /* Add new patch number below this line */
+/**/
+ 298,
/**/
297,
/**/