Compile errors with Clang 20 on Ubuntu 24.04 (AArch64) #7718
Description
When building DynamoRIO on Ubuntu 24.04 (AArch64) with Clang 20 I get the following errors:
/home/phiram01/pull_request/dynamorio/clients/drcachesim/scheduler/scheduler_impl.cpp:910:36: error: offset of on non-standard-layout type 'workload_info_t' [-Werror,-Winvalid-offsetof]
910 | if (workload.struct_size > offsetof(workload_info_t, output_limit))
| ^ ~~~~~~~~~~~~
/usr/lib/llvm-20/lib/clang/20/include/__stddef_offsetof.h:16:24: note: expanded from macro 'offsetof'
Information about the Clang change that caused this warning can be found here:
llvm/llvm-project#64619
Upon fixing this error I then get:
/home/phiram01/pull_request/dynamorio/clients/drcachesim/tracer/tracer.h:79:15: error: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Werror,-Wnon-c-typedef-for-linkage]
79 | typedef struct {
| ^
| per_thread_t
and
/home/phiram01/pull_request/dynamorio/clients/drcov/postprocess/drcov2lcov.cpp:817:38: error: object backing the pointer will be destroyed at the end of the full-expression [-Werror,-Wdangling-gsl]
817 | const char *tofind = op_pathmap.get_value().first.c_str();
| ^~~~~~~~~~~~~~~~~~~~~~
To Reproduce
git clone https://github.com/DynamoRIO/dynamorio.git
cd dynamorio
git submodule init
git submodule update
cd ..
mkdir build && cd build
cmake -DDEBUG=ON -DBUILD_DOCS=OFF ../dynamorio
make -j16
Environment
AWS Graviton 4 instance.
Ubuntu 24.04
Clang 20