Const tightening.

Mark Wooding noticed there was a type mismatch warning in git.c; this
patch does things slightly differently (mostly tightening const) and
was what I was holding onto, waiting for the setup-revisions change
to be merged into the master branch.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/blame.c b/blame.c
index 7308c36..562940e 100644 (file)
--- a/blame.c
+++ b/blame.c
@@ -226,6 +226,7 @@ static void print_patch(struct patch *p)
        }
 }
 
+#if 0
 /* For debugging only */
 static void print_map(struct commit *cmit, struct commit *other)
 {
@@ -259,6 +260,7 @@ static void print_map(struct commit *cmit, struct commit *other)
                printf("\n");
        }
 }
+#endif
 
 // p is a patch from commit to other.
 static void fill_line_map(struct commit *commit, struct commit *other,

diff --git a/exec_cmd.c b/exec_cmd.c
index b5e59a9..96cc212 100644 (file)
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -29,10 +29,9 @@ const char *git_exec_path(void)
 }
 
 
-int execv_git_cmd(char **argv)
+int execv_git_cmd(const char **argv)
 {
        char git_command[PATH_MAX + 1];
-       char *tmp;
        int len, err, i;
        const char *paths[] = { current_exec_path,
                                getenv("GIT_EXEC_PATH"),
@@ -40,6 +39,8 @@ int execv_git_cmd(char **argv)
 
        for (i = 0; i < sizeof(paths)/sizeof(paths[0]); ++i) {
                const char *exec_dir = paths[i];
+               const char *tmp;
+
                if (!exec_dir) continue;
 
                if (*exec_dir != '/') {
@@ -82,7 +83,7 @@ int execv_git_cmd(char **argv)
                argv[0] = git_command;
 
                /* execve() can only ever return if it fails */
-               execve(git_command, argv, environ);
+               execve(git_command, (char **)argv, environ);
 
                err = errno;
 
@@ -93,11 +94,11 @@ int execv_git_cmd(char **argv)
 }
 
 
-int execl_git_cmd(char *cmd,...)
+int execl_git_cmd(const char *cmd,...)
 {
        int argc;
-       char *argv[MAX_ARGS + 1];
-       char *arg;
+       const char *argv[MAX_ARGS + 1];
+       const char *arg;
        va_list param;
 
        va_start(param, cmd);

diff --git a/exec_cmd.h b/exec_cmd.h
index 5150ee2..989621f 100644 (file)
--- a/exec_cmd.h
+++ b/exec_cmd.h
@@ -3,8 +3,8 @@
 
 extern void git_set_exec_path(const char *exec_path);
 extern const char* git_exec_path(void);
-extern int execv_git_cmd(char **argv); /* NULL terminated */
-extern int execl_git_cmd(char *cmd, ...);
+extern int execv_git_cmd(const char **argv); /* NULL terminated */
+extern int execl_git_cmd(const char *cmd, ...);
 
 
 #endif /* __GIT_EXEC_CMD_H_ */

diff --git a/git.c b/git.c
index a547dbd..164d3e9 100644 (file)
--- a/git.c
+++ b/git.c
@@ -216,33 +216,33 @@ static void prepend_to_path(const char *dir, int len)
        setenv("PATH", path, 1);
 }
 
-static void show_man_page(char *git_cmd)
+static void show_man_page(const char *git_cmd)
 {
-       char *page;
+       const char *page;
 
        if (!strncmp(git_cmd, "git", 3))
                page = git_cmd;
        else {
                int page_len = strlen(git_cmd) + 4;
-
-               page = malloc(page_len + 1);
-               strcpy(page, "git-");
-               strcpy(page + 4, git_cmd);
-               page[page_len] = 0;
+               char *p = malloc(page_len + 1);
+               strcpy(p, "git-");
+               strcpy(p + 4, git_cmd);
+               p[page_len] = 0;
+               page = p;
        }
 
        execlp("man", "man", page, NULL);
 }
 
-static int cmd_version(int argc, char **argv, char **envp)
+static int cmd_version(int argc, const char **argv, char **envp)
 {
        printf("git version %s\n", GIT_VERSION);
        return 0;
 }
 
-static int cmd_help(int argc, char **argv, char **envp)
+static int cmd_help(int argc, const char **argv, char **envp)
 {
-       char *help_cmd = argv[1];
+       const char *help_cmd = argv[1];
        if (!help_cmd)
                cmd_usage(git_exec_path(), NULL);
        show_man_page(help_cmd);
@@ -251,7 +251,7 @@ static int cmd_help(int argc, char **argv, char **envp)
 
 #define LOGSIZE (65536)
 
-static int cmd_log(int argc, char **argv, char **envp)
+static int cmd_log(int argc, const char **argv, char **envp)
 {
        struct rev_info rev;
        struct commit *commit;
@@ -263,7 +263,7 @@ static int cmd_log(int argc, char **argv, char **envp)
 
        argc = setup_revisions(argc, argv, &rev, "HEAD");
        while (1 < argc) {
-               char *arg = argv[1];
+               const char *arg = argv[1];
                if (!strncmp(arg, "--pretty", 8)) {
                        commit_format = get_commit_format(arg + 8);
                        if (commit_format == CMIT_FMT_ONELINE)
@@ -325,12 +325,12 @@ static int cmd_log(int argc, char **argv, char **envp)
 
 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
 
-static void handle_internal_command(int argc, char **argv, char **envp)
+static void handle_internal_command(int argc, const char **argv, char **envp)
 {
        const char *cmd = argv[0];
        static struct cmd_struct {
                const char *cmd;
-               int (*fn)(int, char **, char **);
+               int (*fn)(int, const char **, char **);
        } commands[] = {
                { "version", cmd_version },
                { "help", cmd_help },
@@ -346,9 +346,9 @@ static void handle_internal_command(int argc, char **argv, char **envp)
        }
 }
 
-int main(int argc, char **argv, char **envp)
+int main(int argc, const char **argv, char **envp)
 {
-       char *cmd = argv[0];
+       const char *cmd = argv[0];
        char *slash = strrchr(cmd, '/');
        char git_command[PATH_MAX + 1];
        const char *exec_path = NULL;

diff --git a/receive-pack.c b/receive-pack.c
index 2a3db16..93929b5 100644 (file)
--- a/receive-pack.c
+++ b/receive-pack.c
@@ -6,7 +6,7 @@
 
 static const char receive_pack_usage[] = "git-receive-pack <git-dir>";
 
-static char *unpacker[] = { "unpack-objects", NULL };
+static const char *unpacker[] = { "unpack-objects", NULL };
 
 static int report_status = 0;
 
@@ -177,7 +177,7 @@ static void run_update_post_hook(struct command *cmd)
 {
        struct command *cmd_p;
        int argc;
-       char **argv;
+       const char **argv;
 
        if (access(update_post_hook, X_OK) < 0)
                return;
@@ -190,10 +190,12 @@ static void run_update_post_hook(struct command *cmd)
        argv[0] = update_post_hook;
 
        for (argc = 1, cmd_p = cmd; cmd_p; cmd_p = cmd_p->next) {
+               char *p;
                if (cmd_p->error_string)
                        continue;
-               argv[argc] = xmalloc(strlen(cmd_p->ref_name) + 1);
-               strcpy(argv[argc], cmd_p->ref_name);
+               p = xmalloc(strlen(cmd_p->ref_name) + 1);
+               strcpy(p, cmd_p->ref_name);
+               argv[argc] = p;
                argc++;
        }
        argv[argc] = NULL;

diff --git a/run-command.c b/run-command.c
index b3d287e..ca67ee9 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -3,7 +3,7 @@
 #include <sys/wait.h>
 #include "exec_cmd.h"
 
-int run_command_v_opt(int argc, char **argv, int flags)
+int run_command_v_opt(int argc, const char **argv, int flags)
 {
        pid_t pid = fork();
 
@@ -47,7 +47,7 @@ int run_command_v_opt(int argc, char **argv, int flags)
        }
 }
 
-int run_command_v(int argc, char **argv)
+int run_command_v(int argc, const char **argv)
 {
        return run_command_v_opt(argc, argv, 0);
 }
@@ -55,7 +55,7 @@ int run_command_v(int argc, char **argv)
 int run_command(const char *cmd, ...)
 {
        int argc;
-       char *argv[MAX_RUN_COMMAND_ARGS];
+       const char *argv[MAX_RUN_COMMAND_ARGS];
        const char *arg;
        va_list param;
 

diff --git a/run-command.h b/run-command.h
index ef3ee05..70b477a 100644 (file)
--- a/run-command.h
+++ b/run-command.h
@@ -13,8 +13,8 @@ enum {
 
 #define RUN_COMMAND_NO_STDIO 1
 #define RUN_GIT_CMD         2  /*If this is to be git sub-command */
-int run_command_v_opt(int argc, char **argv, int opt);
-int run_command_v(int argc, char **argv);
+int run_command_v_opt(int argc, const char **argv, int opt);
+int run_command_v(int argc, const char **argv);
 int run_command(const char *cmd, ...);
 
 #endif

diff --git a/send-pack.c b/send-pack.c
index f558386..c8ffc8d 100644 (file)
--- a/send-pack.c
+++ b/send-pack.c
@@ -27,7 +27,7 @@ static int is_zero_sha1(const unsigned char *sha1)
 
 static void exec_pack_objects(void)
 {
-       static char *args[] = {
+       static const char *args[] = {
                "pack-objects",
                "--stdout",
                NULL
@@ -39,7 +39,7 @@ static void exec_pack_objects(void)
 static void exec_rev_list(struct ref *refs)
 {
        struct ref *ref;
-       static char *args[1000];
+       static const char *args[1000];
        int i = 0, j;
 
        args[i++] = "rev-list"; /* 0 */

diff --git a/shell.c b/shell.c
index fc0c73c..8c08cf0 100644 (file)
--- a/shell.c
+++ b/shell.c
@@ -15,7 +15,7 @@ static int do_generic_cmd(const char *me, char *arg)
        my_argv[1] = arg;
        my_argv[2] = NULL;
 
-       return execv_git_cmd((char**) my_argv);
+       return execv_git_cmd(my_argv);
 }
 
 static struct commands {

diff --git a/upload-pack.c b/upload-pack.c
index 635abb3..47560c9 100644 (file)
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -46,7 +46,7 @@ static void create_pack_file(void)
        if (!pid) {
                int i;
                int args;
-               char **argv;
+               const char **argv;
                char *buf;
                char **p;
 
@@ -56,9 +56,9 @@ static void create_pack_file(void)
                }
                else
                        args = nr_has + nr_needs + 5;
-               argv = xmalloc(args * sizeof(char *));
+               p = xmalloc(args * sizeof(char *));
+               argv = (const char **) p;
                buf = xmalloc(args * 45);
-               p = argv;
 
                dup2(fd[1], 1);
                close(0);