Oracle is updating the version of GCC for building the JDK on Linux to 13.2.0.
Apart from the "obvious" changes, I'll add some color to the CompileJvm.gmk changes. In particular, I ran into two different types of new warnings with GCC 13.2.0: 1. linux-aarch64-debug + stringop-overflow `src/hotspot/os_cpu/linux_aarch64/atomic_linux_aarch64.hpp:203:66: error: 'long unsigned int __atomic_load_8(const volatile void*, int)' writing 8 bytes into a region of size 0 overflows the destination [-Werror=stringop-overflow=]` Only reproduces with fastdebug on linux-aarch64. I tried to understand why the warning is generated and how the code could be fixed but eventually had to give up.. I ended up disabling the warning for linux-aarch64-debug specifically but open to feedback and other alternatives. 2. linux + zero + dangling-pointer `src/hotspot/share/runtime/thread.hpp:579:77: error: storing the address of local variable 'rm' in '*_thr_current.Thread::_current_resource_mark' [-Werror=dangling-pointer=]` The linux/zero build generates lots and lots of dangling pointer warnings. As with the first warning I tried to understand why but also gave up in the end. Like the first warning I disabled it instead, for zero builds. Again appreciating feedback/suggestions. ------------- Commit messages: - 8319570: Change to GCC 13.2.0 for building on Linux at Oracle Changes: https://git.openjdk.org/jdk/pull/16550/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16550&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8319570 Stats: 34 lines in 5 files changed: 23 ins; 0 del; 11 mod Patch: https://git.openjdk.org/jdk/pull/16550.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/16550/head:pull/16550 PR: https://git.openjdk.org/jdk/pull/16550
