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Porting libsanitizer to aarch64


Hi,

I have been looking at enabling libsanitizer for aarch64 GCC compilers.

To make the build succeed, I had to modify libsanitizer code:
- some syscalls are not available on aarch64 (libsanitizer uses some
legacy ones such as open, readlink, stat, ...)
- unwinding code needs to be added.

What's the way of discussing such patches? On GCC lists or elsewhere?


Then arises a runtime problem: aarch64's frame grows upward which is
not supported: how long would it take to develop this support if at
all possible?

I have not looked at tsan in detail yet, it currently does not build
for aarch64 either.

Thanks,

Christophe.


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