win32: avoid discarding the exception handler

In all likelihood, the compiler with lto doesn't see the function being
used, from assembly macro __try1. Help it by marking the function has
being used.

Resolves:
https://gitlab.com/qemu-project/qemu/-/issues/1904

Fixes: commit d89f30b4df ("win32: wrap socket close() with an exception handler")

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Marc-André Lureau 2023-09-25 15:36:04 +04:00
parent 7db57a73f6
commit 75b773d84c
2 changed files with 7 additions and 1 deletions

View File

@ -206,4 +206,10 @@
#define QEMU_ANNOTATE(x)
#endif
#if __has_attribute(used)
# define QEMU_USED __attribute__((used))
#else
# define QEMU_USED
#endif
#endif /* COMPILER_H */

View File

@ -479,7 +479,7 @@ int qemu_bind_wrap(int sockfd, const struct sockaddr *addr,
return ret;
}
EXCEPTION_DISPOSITION
QEMU_USED EXCEPTION_DISPOSITION
win32_close_exception_handler(struct _EXCEPTION_RECORD *exception_record,
void *registration, struct _CONTEXT *context,
void *dispatcher)