On 21/4/2025 01:27, Nils Breunese wrote:
I created a draft pull request to bump the openjdk11 port to version 11.0.27 (https://github.com/macports/macports-ports/pull/28212), but it looks like this line:AO_UNUSED_MBZ = (-1)<<13, // options bits reserved for future use. in src/jdk.pack/share/native/common-unpack/constants.h results in this error on macOS 15: expression is not an integral constant expression On macOS 13 and 14 the build succeeds without this error. I am not too familiar with C++, but does this seem related to a change in macOS 15? Any idea what should be done to fix the build on macOS 15?
It would be a compiler change rather than a change in the OS. I believe using bitwise shift operators on a negative value has undefined behaviour. The fix would be to express the constant in a well-defined way, for example directly as a hex value, or by shifting a positive value and then negating afterwards. I don't know how this constant is used, so I can't say what would be most appropriate.
- Josh
