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Compatibility for OS/compiler not supporting weak symbols

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Riccardo 2017-12-21 08:34:46 +01:00
parent 38fc2bde82
commit d28a000877
2 changed files with 32 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2017-12-21 Riccardo Mottola <rm@gnu.org>
* Source\NSObject.m:
Compatibility for OS/compiler not supporting weak symbols.
2017-12-18 Graham Lee <graham@iamleeg.com>
* Source/NSJSONSerialization.m: Fix for bug #12 on github. This

27
Source/NSObject.m
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@ -77,6 +77,11 @@
#endif
#endif
#define SUPPORT_WEAK 1
#if (__GNUC__ == 3) && defined (__WIN32)
#undef SUPPORT_WEAK
#endif
/* When this is `YES', every call to release/autorelease, checks to
make sure isn't being set up to release itself too many times.
This does not need mutex protection. */
@ -451,6 +456,7 @@ typedef struct obj_layout *obj;
* runtime. When linked against an older version, we will use our internal
* versions.
*/
#ifdef SUPPORT_WEAK
__attribute__((weak))
BOOL objc_release_fast_no_destroy_np(id anObject);
@ -462,6 +468,7 @@ size_t object_getRetainCount_np(id anObject);
__attribute__((weak))
id objc_retain_fast_np(id anObject);
#endif
static BOOL objc_release_fast_no_destroy_internal(id anObject)
{
@ -524,7 +531,11 @@ static BOOL objc_release_fast_no_destroy_internal(id anObject)
static BOOL release_fast_no_destroy(id anObject)
{
#ifdef SUPPORT_WEAK
if (objc_release_fast_no_destroy_np)
#else
if (0)
#endif
{
return objc_release_fast_no_destroy_np(anObject);
}
@ -536,7 +547,11 @@ static BOOL release_fast_no_destroy(id anObject)
static void objc_release_fast_np_internal(id anObject)
{
#ifdef SUPPORT_WEAK
if (release_fast_no_destroy(anObject))
#else
if (0)
#endif
{
[anObject dealloc];
}
@ -544,7 +559,11 @@ static void objc_release_fast_np_internal(id anObject)
static void release_fast(id anObject)
{
#ifdef SUPPORT_WEAK
if (objc_release_fast_np)
#else
if (0)
#endif
{
objc_release_fast_np(anObject);
}
@ -573,7 +592,11 @@ size_t object_getRetainCount_np_internal(id anObject)
size_t getRetainCount(id anObject)
{
#ifdef SUPPORT_WEAK
if (object_getRetainCount_np)
#else
if (0)
#endif
{
return object_getRetainCount_np(anObject);
}
@ -668,7 +691,11 @@ static id objc_retain_fast_np_internal(id anObject)
static id retain_fast(id anObject)
{
#ifdef SUPPORT_WEAK
if (objc_retain_fast_np)
#else
if (0)
#endif
{
return objc_retain_fast_np(anObject);
}