From 5d314759d787885c2cc389efbfb3aea1c47b56d9 Mon Sep 17 00:00:00 2001 From: Thomas Rast Date: Sat, 24 Jul 2010 17:20:23 +0200 Subject: [PATCH] Cast execl*() NULL sentinels to (char *) The NULL sentinel argument to the execl*() family of calls must be cast to (char *), as otherwise: - platforms where NULL is just 0 (not (void *)) would pass an int - (admittedly esoteric) platforms where NULL is (void *)0 and (void *) and (char *) have different memory layouts would pass the wrong kind of pointer Signed-off-by: Thomas Rast Signed-off-by: Junio C Hamano --- builtin/help.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/builtin/help.c b/builtin/help.c index a9836b00ae..61ff79839b 100644 --- a/builtin/help.c +++ b/builtin/help.c @@ -120,7 +120,7 @@ static void exec_woman_emacs(const char *path, const char *page) if (!path) path = "emacsclient"; strbuf_addf(&man_page, "(woman \"%s\")", page); - execlp(path, "emacsclient", "-e", man_page.buf, NULL); + execlp(path, "emacsclient", "-e", man_page.buf, (char *)NULL); warning("failed to exec '%s': %s", path, strerror(errno)); } } @@ -148,7 +148,7 @@ static void exec_man_konqueror(const char *path, const char *page) } else path = "kfmclient"; strbuf_addf(&man_page, "man:%s(1)", page); - execlp(path, filename, "newTab", man_page.buf, NULL); + execlp(path, filename, "newTab", man_page.buf, (char *)NULL); warning("failed to exec '%s': %s", path, strerror(errno)); } } @@ -157,7 +157,7 @@ static void exec_man_man(const char *path, const char *page) { if (!path) path = "man"; - execlp(path, "man", page, NULL); + execlp(path, "man", page, (char *)NULL); warning("failed to exec '%s': %s", path, strerror(errno)); } @@ -165,7 +165,7 @@ static void exec_man_cmd(const char *cmd, const char *page) { struct strbuf shell_cmd = STRBUF_INIT; strbuf_addf(&shell_cmd, "%s %s", cmd, page); - execl("/bin/sh", "sh", "-c", shell_cmd.buf, NULL); + execl("/bin/sh", "sh", "-c", shell_cmd.buf, (char *)NULL); warning("failed to exec '%s': %s", cmd, strerror(errno)); } @@ -372,7 +372,7 @@ static void show_info_page(const char *git_cmd) { const char *page = cmd_to_page(git_cmd); setenv("INFOPATH", system_path(GIT_INFO_PATH), 1); - execlp("info", "info", "gitman", page, NULL); + execlp("info", "info", "gitman", page, (char *)NULL); die("no info viewer handled the request"); } @@ -398,7 +398,7 @@ static void get_html_page_path(struct strbuf *page_path, const char *page) #ifndef open_html static void open_html(const char *path) { - execl_git_cmd("web--browse", "-c", "help.browser", path, NULL); + execl_git_cmd("web--browse", "-c", "help.browser", path, (char *)NULL); } #endif