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-rw-r--r--buffer.h4
-rw-r--r--text.h4
-rw-r--r--vis.h4
3 files changed, 6 insertions, 6 deletions
diff --git a/buffer.h b/buffer.h
index 91932c6..41c2532 100644
--- a/buffer.h
+++ b/buffer.h
@@ -43,9 +43,9 @@ bool buffer_prepend(Buffer*, const void *data, size_t len);
/* prepend NUL-terminated data */
bool buffer_prepend0(Buffer*, const char *data);
/* set formatted buffer content, ensures NUL termination on success */
-bool buffer_printf(Buffer*, const char *fmt, ...);
+bool buffer_printf(Buffer*, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
/* append formatted buffer content, ensures NUL termination on success */
-bool buffer_appendf(Buffer*, const char *fmt, ...);
+bool buffer_appendf(Buffer*, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
/* return length of a buffer without trailing NUL byte */
size_t buffer_length0(Buffer*);
/* return length of a buffer including possible NUL byte */
diff --git a/text.h b/text.h
index 8f41f08..b927e3f 100644
--- a/text.h
+++ b/text.h
@@ -40,8 +40,8 @@ typedef struct {
Text *text_load(const char *filename);
/* file information at time of load or last save */
struct stat text_stat(Text*);
-bool text_appendf(Text*, const char *format, ...);
-bool text_printf(Text*, size_t pos, const char *format, ...);
+bool text_appendf(Text*, const char *format, ...) __attribute__((format(printf, 2, 3)));
+bool text_printf(Text*, size_t pos, const char *format, ...) __attribute__((format(printf, 3, 4)));
/* inserts a line ending character (depending on file type) */
size_t text_insert_newline(Text*, size_t pos);
/* insert `len' bytes starting from `data' at `pos' which has to be
diff --git a/vis.h b/vis.h
index ce6e42b..3b9ede7 100644
--- a/vis.h
+++ b/vis.h
@@ -122,7 +122,7 @@ int vis_window_height_get(const Win*);
void vis_prompt_show(Vis*, const char *title);
/* display a one line message to the user, will be hidden upon keypress */
-void vis_info_show(Vis*, const char *msg, ...);
+void vis_info_show(Vis*, const char *msg, ...) __attribute__((format(printf, 2, 3)));
void vis_info_hide(Vis*);
/* display an arbitrary long message in a special window/file */
@@ -150,7 +150,7 @@ int vis_run(Vis*, int argc, char *argv[]);
/* terminate editing session, given status will be the return value of vis_run */
void vis_exit(Vis*, int status);
/* emergency exit, print given message, perform minimal ui cleanup and exit process */
-void vis_die(Vis*, const char *msg, ...) __attribute__((noreturn));
+void vis_die(Vis*, const char *msg, ...) __attribute__((noreturn,format(printf, 2, 3)));
enum VisMode {
VIS_MODE_NORMAL,