68 lines
3.3 KiB
Diff
68 lines
3.3 KiB
Diff
From 42982b5a5d461530a792e69b3e8abdd9d6d67052 Mon Sep 17 00:00:00 2001
|
|
From: Frank Plowman <post@frankplowman.com>
|
|
Date: Fri, 22 Dec 2023 12:00:01 +0000
|
|
Subject: [PATCH] avformat/ffrtmpcrypt: Fix int-conversion warning
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
Content-type: text/plain
|
|
|
|
The gcrypt definition of `bn_new` used to use the return statement
|
|
on errors, with an AVERROR return value, regardless of the signature
|
|
of the function where the macro is used - it is called in
|
|
`dh_generate_key` and `ff_dh_init` which return pointers. As a result,
|
|
compiling with gcrypt and the ffrtmpcrypt protocol resulted in an
|
|
int-conversion warning. GCC 14 may upgrade these to errors [1].
|
|
|
|
This patch fixes the problem by changing the macro to remove `AVERROR`
|
|
and instead set `bn` to null if the allocation fails. This is the
|
|
behaviour of all the other `bn_new` implementations and so the result is
|
|
already checked at all the callsites. AFAICT, this should be the only
|
|
change needed to get ffmpeg off Fedora's naughty list of projects with
|
|
warnings which may be upgraded to errors in GCC 14 [2].
|
|
|
|
[1]: https://gcc.gnu.org/pipermail/gcc/2023-May/241264.html
|
|
[2]: https://www.mail-archive.com/devel@lists.fedoraproject.org/msg196024.html
|
|
|
|
Signed-off-by: Frank Plowman <post@frankplowman.com>
|
|
Signed-off-by: Martin Storsjö <martin@martin.st>
|
|
---
|
|
libavformat/rtmpdh.c | 21 ++++++++++++---------
|
|
1 file changed, 12 insertions(+), 9 deletions(-)
|
|
|
|
diff --git a/libavformat/rtmpdh.c b/libavformat/rtmpdh.c
|
|
index 5ddae537a1..6a6c2ccd87 100644
|
|
--- a/libavformat/rtmpdh.c
|
|
+++ b/libavformat/rtmpdh.c
|
|
@@ -113,15 +113,18 @@ static int bn_modexp(FFBigNum bn, FFBigNum y, FFBigNum q, FFBigNum p)
|
|
return 0;
|
|
}
|
|
#elif CONFIG_GCRYPT
|
|
-#define bn_new(bn) \
|
|
- do { \
|
|
- if (!gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P)) { \
|
|
- if (!gcry_check_version("1.5.4")) \
|
|
- return AVERROR(EINVAL); \
|
|
- gcry_control(GCRYCTL_DISABLE_SECMEM, 0); \
|
|
- gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0); \
|
|
- } \
|
|
- bn = gcry_mpi_new(1); \
|
|
+#define bn_new(bn) \
|
|
+ do { \
|
|
+ if (!gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P)) { \
|
|
+ if (gcry_check_version("1.5.4")) { \
|
|
+ gcry_control(GCRYCTL_DISABLE_SECMEM, 0); \
|
|
+ gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0); \
|
|
+ } \
|
|
+ } \
|
|
+ if (gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P)) \
|
|
+ bn = gcry_mpi_new(1); \
|
|
+ else \
|
|
+ bn = NULL; \
|
|
} while (0)
|
|
#define bn_free(bn) gcry_mpi_release(bn)
|
|
#define bn_set_word(bn, w) gcry_mpi_set_ui(bn, w)
|
|
--
|
|
2.43.0
|
|
|