JDK-8257620 : Do not use objc_msgSend_stret to get macOS version
- Type: Enhancement
- Component: core-libs
- Affected Version: 16
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: os_x
- Submitted: 2020-12-02
- Updated: 2022-12-05
- Resolved: 2020-12-21
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To download the current JDK release, click here.
| JDK 11 | JDK 13 | JDK 15 | JDK 17 | JDK 8 | Other |
|---|---|---|---|---|---|
| 11.0.13Fixed | 13.0.9Fixed | 15.0.5Fixed | 17 b03Fixed  |
8u351Fixed | openjdk8u372Fixed |
Related Reports
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Relates :
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Description
https://github.com/openjdk/jdk/blob/master/src/java.base/macosx/native/libjava/java_props_macosx.c#L241
As described by comment, [NSProcessInfo operatingSystemVersion] is available in macOS 10.9, but it not available in the SDK for that version. To overcome that, objc_msgSend_stret is used.
This code can be rewritten in pure ObjC with proper type checks.
It's also necessary for macOS/AArch64 port, where objc_msgSend_stret is not available and compiler produces a message below.
/Users/akozlov/zulu16/src/java.base/macosx/native/libjava/java_props_macosx.c:241:79: error: 'objc_msgSend_stret' is unavailable: not available in arm64
OSVerStruct (*procInfoFn)(id rec, SEL sel) = (OSVerStruct(*)(id, SEL))objc_msgSend_stret;
^
/Users/akozlov/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.0.sdk/usr/include/objc/message.h:123:1: note: 'objc_msgSend_stret' has been explicitly marked unavailable here
objc_msgSend_stret(void /* id self, SEL op, ... */ )
Comments
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