Change Details

The hwasan interceptor ABI doesn't have interceptors for longjmp and setjmp. This patch introduces them. It seems a transitive include (through `hwasan_interface_internal.h` including the system header `link.h`) means that the setjmp data structures for the target system are already included during compilation time. Despite this not following the comment at the top of `hwasan_interceptors.cpp` this is being left for now. Tested on both GCC and clang using an AArch64 virtual machine. I haven't yet written a test for this since I don't understand the clang testsuite format -- I will do this, but am putting the current patch up for discussion so I can get some feedback while working on that.

The hwasan interceptor ABI doesn't have interceptors for longjmp and setjmp. This patch introduces them. We require the size of the `jmp_buf` on the platform to be at least as large as the `jmp_buf` in our implementation. To enforce this we compile hwasan_type_test.cpp that ensures a compile time failure if this is not true. Tested on both GCC and clang using an AArch64 virtual machine.

The hwasan interceptor ABI doesn't have interceptors for longjmp and setjmp. This patch introduces them. It seems a transitive include (through `hwasan_interface_internal.hWe require the size of the `jmp_buf` on the platform to be at least as large as the `jmp_buf` including our implementation. the system header `link.h`) means that the setjmp data structures for the target system are already included during compilation time. Despite this not following the comment at the top of `hwasan_interceptors.cpp` this is being left for nowTo enforce this we compile hwasan_type_test.cpp that ensures a compile time failure if this is not true. Tested on both GCC and clang using an AArch64 virtual machine. I haven't yet written a test for this since I don't understand the clang testsuite format -- I will do this, but am putting the current patch up for discussion so I can get some feedback while working on that.