On 3/6/2017 11:55 PM, Michael Niedermayer wrote:
> On Tue, Mar 07, 2017 at 02:47:36AM +0700, Muhammad Faiz wrote:
>> Signed-off-by: Muhammad Faiz <mfc...@gmail.com>
>> ---
>> libavcodec/allcodecs.c | 13 ++++++++++---
>> 1 file changed, 10 insertions(+), 3 deletions(-)
>
> fails to build
>
> ibavcodec/allcodecs.c: In function ‘avcodec_register_all’:
> libavcodec/allcodecs.c:68:5: error: implicit declaration of function ‘typeof’
> [-Werror=implicit-function-declaration]
> libavcodec/allcodecs.c:68:33: error: expected ‘;’ before ‘_obj’
> libavcodec/allcodecs.c:68:78: error: expected ‘;’ before ‘_old’
> libavcodec/allcodecs.c:68:87: error: ‘_old’ undeclared (first use in this
> function)
> libavcodec/allcodecs.c:68:87: note: each undeclared identifier is reported
> only once for each function it appears in
> libavcodec/allcodecs.c:68:119: error: ‘_obj’ undeclared (first use in this
> function)
> libavcodec/allcodecs.c:68:78: error: incompatible type for argument 1 of
> ‘__sync_bool_compare_and_swap’
> cc1: some warnings being treated as errors
> make: *** [libavcodec/allcodecs.o] Error 1
> make: *** Waiting for unfinished jobs....
This is from the compat header for c11 atomics on old GCC versions.
Looks like it should be using __typeof__ instead.
Try the attached patch.
>From 5af305a9180b691577e48731d9ca84a3b2342404 Mon Sep 17 00:00:00 2001
From: James Almer <jamr...@gmail.com>
Date: Tue, 7 Mar 2017 00:04:46 -0300
Subject: [PATCH] compat/atomics/gcc: use __typeof__ instead of typeof
Signed-off-by: James Almer <jamr...@gmail.com>
---
compat/atomics/gcc/stdatomic.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/compat/atomics/gcc/stdatomic.h b/compat/atomics/gcc/stdatomic.h
index 41caddec5c..2b64687437 100644
--- a/compat/atomics/gcc/stdatomic.h
+++ b/compat/atomics/gcc/stdatomic.h
@@ -100,8 +100,8 @@ do { \
#define atomic_exchange(object, desired) \
({ \
- typeof(object) _obj = (object); \
- typeof(*object) _old; \
+ __typeof__(object) _obj = (object); \
+ __typeof__(*object) _old; \
do \
_old = atomic_load(_obj); \
while (!__sync_bool_compare_and_swap(_obj, _old, (desired))); \
@@ -113,8 +113,8 @@ do { \
#define atomic_compare_exchange_strong(object, expected, desired) \
({ \
- typeof(object) _exp = (expected); \
- typeof(*object) _old = *_exp; \
+ __typeof__(object) _exp = (expected); \
+ __typeof__(*object) _old = *_exp; \
*_exp = __sync_val_compare_and_swap((object), _old, (desired)); \
*_exp == _old; \
})
--
2.12.0
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