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d86167ec75
For every public header file, the old include guard definition needs
to be added in addition to the new one
include/openssl/file.h:
#ifndef OPENSSL_FILE_H
# define OPENSSL_FILE_H
# pragma once
# include <openssl/macros.h>
# if !OPENSSL_API_3
# define HEADER_FILE_H
# endif
...
This is going to ensure that applications which use the old include guards
externally, for example like this
#ifndef HEADER_FILE_H
# include <openssl/file.h>
#endif
will not fail to compile.
In addition to the legacy guard, the public header files also receive a
'# pragma once' directive.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9333)
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