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asyn-thread: silence -Wcast-align warning for Windows

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Seen with llvm/clang 17:
```
lib/asyn-thread.c:310:5: warning: cast from 'PCHAR' (aka 'char *') to 'struct thread_sync_data *' increases required alignment from 1 to 8 [-Wcast-align]
  310 |     CONTAINING_RECORD(overlapped, struct thread_sync_data, w8.overlapped);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.../llvm-mingw/aarch64-w64-mingw32/include/winnt.h:717:48: note: expanded from macro 'CONTAINING_RECORD'
  717 | #define CONTAINING_RECORD(address,type,field) ((type *)((PCHAR)(address) - (ULONG_PTR)(&((type *)0)->field)))
      |                                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```

Follow-up to a6bbc87f9e #12482

Ref: https://github.com/curl/curl/pull/12482#issuecomment-1873017261
Closes #12615
This commit is contained in:
Viktor Szakats 2024-01-01 15:29:33 +00:00
parent b23255af99
commit f0ea11b50b
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1 changed files with 7 additions and 0 deletions
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7
lib/asyn-thread.c
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@ -302,8 +302,15 @@ query_complete(DWORD err, DWORD bytes, LPWSAOVERLAPPED overlapped)
struct Curl_addrinfo *ca;
struct Curl_addrinfo *cafirst = NULL;
struct Curl_addrinfo *calast = NULL;
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wcast-align"
#endif
struct thread_sync_data *tsd =
CONTAINING_RECORD(overlapped, struct thread_sync_data, w8.overlapped);
#ifdef __clang__
#pragma clang diagnostic pop
#endif
struct thread_data *td = tsd->td;
const ADDRINFOEXW_ *res = tsd->w8.res;
int error = (int)err;