1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
From c41f233c4c38e84023a16339782ee306f03e7f59 Mon Sep 17 00:00:00 2001
From: Paul Eggert <address@hidden>
Date: Fri, 7 Jul 2017 14:10:20 -0700
Subject: [PATCH] vasnprintf: port to macOS 10.13
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Problem reported by comex in:
http://lists.gnu.org/archive/html/bug-gnulib/2017-07/msg00056.html
* lib/vasnprintf.c (VASNPRINTF): Donât use %n on macOS.
---
ChangeLog | 7 +++++++
lib/vasnprintf.c | 9 ++++++++-
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
index 9c2af0e..fecaf27 100644
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -4869,7 +4869,11 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
#endif
*fbp = dp->conversion;
#if USE_SNPRINTF
-# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
+# if ! (((__GLIBC__ > 2 \
+ || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) \
+ && !defined __UCLIBC__) \
+ || (defined __APPLE__ && defined __MACH__) \
+ || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
fbp[1] = '%';
fbp[2] = 'n';
fbp[3] = '\0';
@@ -4883,6 +4887,9 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
in format strings in writable memory may crash the program
(if compiled with _FORTIFY_SOURCE=2), so we should avoid it
in this situation. */
+ /* macOS 10.13 High Sierra behaves like glibc with
+ _FORTIFY_SOURCE=2, and older macOS releases
+ presumably do not need %n. */
/* On native Windows systems (such as mingw), we can avoid using
%n because:
- Although the gl_SNPRINTF_TRUNCATION_C99 test fails,
--
2.7.4
|
