diff options
Diffstat (limited to 'compiler-rt/lib/builtins/os_version_check.c')
| -rw-r--r-- | compiler-rt/lib/builtins/os_version_check.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/compiler-rt/lib/builtins/os_version_check.c b/compiler-rt/lib/builtins/os_version_check.c index ebfb2dfc72dd..182eabe7a6ae 100644 --- a/compiler-rt/lib/builtins/os_version_check.c +++ b/compiler-rt/lib/builtins/os_version_check.c @@ -86,6 +86,10 @@ typedef Boolean (*CFStringGetCStringFuncTy)(CFStringRef, char *, CFIndex, CFStringEncoding); typedef void (*CFReleaseFuncTy)(CFTypeRef); +extern __attribute__((weak_import)) +bool _availability_version_check(uint32_t count, + dyld_build_version_t versions[]); + static void _initializeAvailabilityCheck(bool LoadPlist) { if (AvailabilityVersionCheck && !LoadPlist) { // New API is supported and we're not being asked to load the plist, @@ -94,8 +98,8 @@ static void _initializeAvailabilityCheck(bool LoadPlist) { } // Use the new API if it's is available. - AvailabilityVersionCheck = (AvailabilityVersionCheckFuncTy)dlsym( - RTLD_DEFAULT, "_availability_version_check"); + if (_availability_version_check) + AvailabilityVersionCheck = &_availability_version_check; if (AvailabilityVersionCheck && !LoadPlist) { // New API is supported and we're not being asked to load the plist, |