[evince/gnome-3-36] cut-n-paste: Annotate functions that wraps formatting strings

[Germán Poo-Caamaño <gpoo src gnome org>]

commit b11e36766289b154669ae6bede1523f5b7b29c95
Author: Germán Poo-Caamaño <gpoo gnome org>
Date:   Sat May 30 10:53:10 2020 -0400

    cut-n-paste: Annotate functions that wraps formatting strings
    
    clang is stricter than gcc when compiling with -Wformat-nonliteral
    and requires annotate the function parameters when passing an
    argument to a va_list that contains these arguments.
    
    Fixes #1410

 cut-n-paste/synctex/synctex_parser.c       | 2 ++
 cut-n-paste/synctex/synctex_parser_utils.c | 1 +
 cut-n-paste/unarr/common/unarr.c           | 1 +
 3 files changed, 4 insertions(+)
---
diff --git a/cut-n-paste/synctex/synctex_parser.c b/cut-n-paste/synctex/synctex_parser.c
index 9bbc43dd..fee33d71 100644
--- a/cut-n-paste/synctex/synctex_parser.c
+++ b/cut-n-paste/synctex/synctex_parser.c
@@ -8411,6 +8411,7 @@ struct synctex_updater_t {
     int length;             /*  the number of chars appended */
 };
 
+__attribute__((__format__ (__printf__, 2, 3)))
 static int _synctex_updater_print(synctex_updater_p updater, const char * format, ...) {
     int result = 0;
     if (updater) {
@@ -8447,6 +8448,7 @@ static int vasprintf(char **ret,
 /**
  *  gzvprintf is not available until OSX 10.10
  */
+__attribute__((__format__ (__printf__, 2, 3)))
 static int _synctex_updater_print_gz(synctex_updater_p updater, const char * format, ...) {
     int result = 0;
     if (updater) {
diff --git a/cut-n-paste/synctex/synctex_parser_utils.c b/cut-n-paste/synctex/synctex_parser_utils.c
index 08053f02..3a23532e 100644
--- a/cut-n-paste/synctex/synctex_parser_utils.c
+++ b/cut-n-paste/synctex/synctex_parser_utils.c
@@ -149,6 +149,7 @@ int _synctex_error(const char * reason,...) {
     return result;
 }
 
+__attribute__((__format__ (__printf__, 1, 2)))
 int _synctex_debug(const char * reason,...) {
     va_list arg;
     int result;
diff --git a/cut-n-paste/unarr/common/unarr.c b/cut-n-paste/unarr/common/unarr.c
index 97ec92ae..49c6d981 100644
--- a/cut-n-paste/unarr/common/unarr.c
+++ b/cut-n-paste/unarr/common/unarr.c
@@ -92,6 +92,7 @@ size_t ar_get_global_comment(ar_archive *ar, void *buffer, size_t count)
     return ar->get_comment(ar, buffer, count);
 }
 
+__attribute__((__format__ (__printf__, 4, 0)))
 void ar_log(const char *prefix, const char *file, int line, const char *msg, ...)
 {
     va_list args;