silence a bunch of format-zero-length warnings

This can be observed in many versions of gcc and still exists with 4.9.0:

wt-status.c: In function ‘wt_status_print_unmerged_header’:
wt-status.c:191:2: warning: zero-length gnu_printf format string [-Wformat-zero-length]
status_printf_ln(s, c, "");
^

The user have long been told to pass -Wno-format-zero-length, but a
patch that avoids warning altogether is not too noisy, so let's do
so.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/commit.c b/builtin/commit.c
index fedb45af8c65d28c3b43b3b74362e589d81a95ee..377d8418d2496b6e7ccb1317815310a6638da5a0 100644 (file)
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -805,7 +805,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                                committer_ident.buf);
 
                if (ident_shown)
-                       status_printf_ln(s, GIT_COLOR_NORMAL, "");
+                       status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 
                saved_color_setting = s->use_color;
                s->use_color = 0;

diff --git a/wt-status.c b/wt-status.c
index 85390b813f12e2392b73dd6dffe8d1b41e838614..598f9e34e7cb9ad2c123af7b0ffb5cb301b32307 100644 (file)
--- a/wt-status.c
+++ b/wt-status.c
@@ -187,7 +187,7 @@ static void wt_status_print_unmerged_header(struct wt_status *s)
        } else {
                status_printf_ln(s, c, _("  (use \"git add/rm <file>...\" as appropriate to mark resolution)"));
        }
-       status_printf_ln(s, c, "");
+       status_printf_ln(s, c, "%s", "");
 }
 
 static void wt_status_print_cached_header(struct wt_status *s)
@@ -203,7 +203,7 @@ static void wt_status_print_cached_header(struct wt_status *s)
                status_printf_ln(s, c, _("  (use \"git reset %s <file>...\" to unstage)"), s->reference);
        else
                status_printf_ln(s, c, _("  (use \"git rm --cached <file>...\" to unstage)"));
-       status_printf_ln(s, c, "");
+       status_printf_ln(s, c, "%s", "");
 }
 
 static void wt_status_print_dirty_header(struct wt_status *s,
@@ -222,7 +222,7 @@ static void wt_status_print_dirty_header(struct wt_status *s,
        status_printf_ln(s, c, _("  (use \"git checkout -- <file>...\" to discard changes in working directory)"));
        if (has_dirty_submodules)
                status_printf_ln(s, c, _("  (commit or discard the untracked or modified content in submodules)"));
-       status_printf_ln(s, c, "");
+       status_printf_ln(s, c, "%s", "");
 }
 
 static void wt_status_print_other_header(struct wt_status *s,
@@ -234,12 +234,12 @@ static void wt_status_print_other_header(struct wt_status *s,
        if (!s->hints)
                return;
        status_printf_ln(s, c, _("  (use \"git %s <file>...\" to include in what will be committed)"), how);
-       status_printf_ln(s, c, "");
+       status_printf_ln(s, c, "%s", "");
 }
 
 static void wt_status_print_trailer(struct wt_status *s)
 {
-       status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
+       status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 }
 
 #define quote_path quote_path_relative
@@ -767,7 +767,7 @@ static void wt_status_print_other(struct wt_status *s,
        string_list_clear(&output, 0);
        strbuf_release(&buf);
 conclude:
-       status_printf_ln(s, GIT_COLOR_NORMAL, "");
+       status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
 }
 
 void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
@@ -849,7 +849,7 @@ static void wt_status_print_tracking(struct wt_status *s)
                color_fprintf_ln(s->fp, color(WT_STATUS_HEADER, s), "%c",
                                 comment_line_char);
        else
-               fprintf_ln(s->fp, "");
+               fputs("", s->fp);
 }
 
 static int has_unmerged(struct wt_status *s)
@@ -1265,7 +1265,7 @@ void wt_status_print(struct wt_status *s)
                                on_what = _("Not currently on any branch.");
                        }
                }
-               status_printf(s, color(WT_STATUS_HEADER, s), "");
+               status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");
                status_printf_more(s, branch_status_color, "%s", on_what);
                status_printf_more(s, branch_color, "%s\n", branch_name);
                if (!s->is_initial)
@@ -1278,9 +1278,9 @@ void wt_status_print(struct wt_status *s)
        free(state.detached_from);
 
        if (s->is_initial) {
-               status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
+               status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
                status_printf_ln(s, color(WT_STATUS_HEADER, s), _("Initial commit"));
-               status_printf_ln(s, color(WT_STATUS_HEADER, s), "");
+               status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
        }
 
        wt_status_print_updated(s);
@@ -1297,7 +1297,7 @@ void wt_status_print(struct wt_status *s)
                if (s->show_ignored_files)
                        wt_status_print_other(s, &s->ignored, _("Ignored files"), "add -f");
                if (advice_status_u_option && 2000 < s->untracked_in_ms) {
-                       status_printf_ln(s, GIT_COLOR_NORMAL, "");
+                       status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
                        status_printf_ln(s, GIT_COLOR_NORMAL,
                                         _("It took %.2f seconds to enumerate untracked files. 'status -uno'\n"
                                           "may speed it up, but you have to be careful not to forget to add\n"