dc261d23d0
`TestCases/log-path_test.cpp` currently `FAIL`s on Solaris: $ env ASAN_OPTIONS=log_path=`for((i=0;i<10000;i++)); do echo -n $i; done` ./log-path_test.cpp.tmp ==5031==ERROR: Path is too long: 01234567... Segmentation Fault (core dumped) The `SEGV` happens here: Thread 2 received signal SIGSEGV, Segmentation fault. [Switching to Thread 1 (LWP 1)] 0x00000000 in ?? () (gdb) where #0 0x00000000 in ?? () #1 0x080a1e63 in __interceptor__exit (status=1) at /vol/gcc/src/llvm/llvm/local/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:3808 #2 0x08135ea8 in __sanitizer::internal__exit (exitcode=1) at /vol/gcc/src/llvm/llvm/local/projects/compiler-rt/lib/sanitizer_common/sanitizer_solaris.cc:139 when `__interceptor__exit` tries to call `__interception::real__exit` which is `NULL` at this point because the interceptors haven't been initialized yet. Ultimately, the problem lies elsewhere, however: `internal__exit` in `sanitizer_solaris.cpp` calls `_exit` itself since there doesn't exit a non-intercepted version in `libc`. Using the `syscall` interface instead isn't usually an option on Solaris because that interface isn't stable. However, in the case of `SYS_exit` it can be used nonetheless: `SYS_exit` has remained unchanged since at least Solaris 2.5.1 in 1996, and this is what this patch does. Tested on `amd64-pc-solaris2.11`. Differential Revision: https://reviews.llvm.org/D88404
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