[apache/incubator-teaclave-sgx-sdk] Assertion failure on `sgx_tstd/hashbrown` (#339)

[Baltasar Dinis <no...@github.com.INVALID>]

Hi,

For some reason, I keep getting a panic from an assertion in `sgx_tstd/hashbrown/src/raw/sse2.rs`.
This is on the current `master` (`c2698dc2685f8dcd9550086c62077bceff15ded0`).

The error is the following:
```
thread '<unnamed>' panicked at 'assertion failed: `(left == right)`
  left: `8`,
 right: `0`', /<redacted>/sgx-sdk/sgx_tstd/hashbrown/src/raw/mod.rs:1388:9
fatal runtime error: failed to initiate panic, error 5
```

This seems to be checking some alignment, and, by the looks of it, it enforces that pointers should be aligned to a 16B boundary. However, AFAIK rust only requires 8B aligned pointers and I don't know how to force them to be 16B aligned.

Is there something I'm doing wrong?

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Re: [apache/incubator-teaclave-sgx-sdk] Assertion failure on `sgx_tstd/hashbrown` (#339)

[Baltasar Dinis <no...@github.com.INVALID>]

Update: manually overriding the `cfg_if` to use the implementation in `generic.rs` instead of the `sse2.rs` seems to work. 

However, looking at my `/proc/cpuinfo` file it seems that my machine has sse2 support.

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