<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/63054>63054</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang i686-w64-mingw32 can not build wolfssl with turn on optimization 
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          calvin2021y
      </td>
    </tr>
</table>

<pre>
    I try buildwolfssl + quickjs project, get this bugs:

1) if build without asan,  must use `-O0` other ways crashed at runtime. 
2) if link with asan(all objects file is build without asan,  just link with asan), then I can turn on optimization without crash

try adjust `on/off LTO`, `-fstack-protector-strong`/`-fno-stack-protector`,  `-g`.   Does not affect test results

I am cross build from linux,  try ucrt and msvcrt,  try llvm 14, 15, 16.   Does not affect test results

here is the crash logs:

```sh
(lldb) Process 12600 stopped
* thread #1, stop reason = Exception 0xc0000005 encountered at address 0xa3ad1d: Access violation reading location 0xffffffff
    frame #0: 0x00a3ad1d test.exe`wc_AesInit(aes=<unavailable>, heap=<unavailable>, devId=<unavailable>) at aes.c:9577:5Process 12600 launched: 'C:\Users\admin\test.exe' (i386)
(lldb) bt
* thread #1, stop reason = Exception 0xc0000005 encountered at address 0xa3ad1d: Access violation reading location 0xffffffff
  * frame #0: 0x00a3ad1d test.exe`wc_AesInit(aes=<unavailable>, heap=<unavailable>, devId=<unavailable>) at aes.c:9577:5    frame #1: 0x00abcf39 test.exe`SetKeys(enc=0x30966aec, dec=0x00000000, keys=<unavailable>, specs=<unavailable>, side=<unavailable>, heap=<unavailable>, 
devId=<unavailable>, rng=<unavailable>, tls13=<unavailable>) at keys.c:2551:17
    frame #2: 0x00abc8bc test.exe`SetKeysSide(ssl=<unavailable>, side=<unavailable>) at keys.c:3056:15
    frame #3: 0x00a69019 test.exe`SendChangeCipher(ssl=<unavailable>) at internal.c:20345:20
 frame #4: 0x009fe29f test.exe`wolfSSL_connect(ssl=<unavailable>) at ssl.c:13565:32
    frame #5: 0x00a9234a test.exe`wolfssl_connect_step2(cf=0x2e897490, data=<unavailable>) at wolfssl.c:720:9
    frame #6: 0x00a91d47 test.exe`wolfssl_connect_common(cf=0x2e897490, data=<unavailable>, nonblocking=<unavailable>, done=<unavailable>) at wolfssl.c:1225:14
 frame #7: 0x00a919c3 test.exe`wolfssl_connect_nonblocking(cf=<unavailable>, data=<unavailable>, done=<unavailable>) at wolfssl.c:1257:10
    frame #8: 0x00a15fbf test.exe`ssl_connect_nonblocking(cf=0x2e897490, data=0x3094cc08, done=<unavailable>) at vtls.c:375:10
    frame #9: 0x00a1546d test.exe`ssl_cf_connect(cf=0x2e897490, data=0x3094cc08, blocking=<unavailable>, done=0x2e4fedff) at vtls.c:1547:14
    frame #10: 0x00a22b28 test.exe`cf_setup_connect(cf=<unavailable>, data=<unavailable>, blocking=<unavailable>, done=<unavailable>) at connect.c:1196:14
    frame #11: 0x00a9eee2 test.exe`cf_hc_baller_connect(b=0x3087ba50, cf=0x2e936988, data=<unavailable>, done=<unavailable>) at cf-https-connect.c:135:15
 frame #12: 0x00a9e6d7 test.exe`cf_hc_connect(cf=0x2e936988, data=0x3094cc08, blocking=<unavailable>, done=0x2e4fedff) at cf-https-connect.c:290:16
 frame #13: 0x00a218ce test.exe`Curl_conn_connect(data=0x3094cc08, sockindex=0, blocking=<unavailable>, done=0x2e4fedff) at cfilters.c:351:14
    frame #14: 0x009f6fae test.exe`multi_runsingle(multi=<unavailable>, nowp=<unavailable>, data=0x3094cc08) at multi.c:2109:16
    frame #15: 0x009f84c0 test.exe`multi_socket(multi=0x308a9610, checkall=<unavailable>, s=836, ev_bitmask=1, running_handles=0x2e4feea8) at multi.c:3270:16
    frame #16: 0x009f8585 test.exe`curl_multi_socket_action(multi=<unavailable>, s=<unavailable>, ev_bitmask=<unavailable>, running_handles=<unavailable>) at multi.c:3392:12
```

Try add `__attribute__((noinline))` to function `wc_AesInit`,  `SetKeys`, `SetKeysSide`, `SendChangeCipher`,  seems still crash.

Is this a LLVM bugs or wolfssl code bugs ?  (the code test work for a lot other platform, and with `-O0` work well).

If it is a LLVM bugs, what I can do to help location the bugs ?

https://github.com/mstorsjo/llvm-mingw/issues/347
</pre>
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