Hello,
I'm enabling the asan in my firmware, and I meet a issue that the
asan.module_ctor() as below is missing in my linked firmware module. I
build asan with -fsanitize=address -mllvm
-asan-instrumentation-with-call-threshold=0 and I hope to understand who is
supposed to call the asan.module_ctor() to do initialization when start a
module? If the caller is the glibc in Linux(e.g. __libc_csu_init() in
glibc-2.23\csu\elf-init.c) , then how the LLVM let the glibc know the
asan.module_ctor()?
define internal void @asan.module_ctor() {
call void @__asan_init()
call void @__asan_version_mismatch_check_v8()
call void @__asan_register_globals(i64 ptrtoint ([1 x { i64, i64, i64,
i64, i64, i64, i64, i64 }]* @0 to i64), i64 1)
ret void
}
My firmware doesn't use glibc, all my firmware libraries are self-supported
and not linked with OS standard library. Does it mean current LLVM asan
cannot support my firmware? Any suggestion is welcomed.
Thanks
Steven Shi
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