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2de108dfa3
TlsGetValue clears the last error even on success, so that callers may distinguish it successfully returning NULL or failing. This error-mangling behavior interferes with the caller's use of GetLastError. In particular SSL_get_error queries the error queue to determine whether the caller should look at the OS's errors. To avoid destroying state, save and restore the Windows error. Fixes #6299. Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/6316)
40 lines
941 B
C
40 lines
941 B
C
/*
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* Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/opensslconf.h>
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#include <openssl/err.h>
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#include "testutil.h"
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#if defined(OPENSSL_SYS_WINDOWS)
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# include <windows.h>
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#else
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# include <errno.h>
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#endif
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/* Test that querying the error queue preserves the OS error. */
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static int preserves_system_error(void)
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{
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#if defined(OPENSSL_SYS_WINDOWS)
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SetLastError(ERROR_INVALID_FUNCTION);
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ERR_get_error();
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return TEST_int_eq(GetLastError(), ERROR_INVALID_FUNCTION);
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#else
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errno = EINVAL;
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ERR_get_error();
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return TEST_int_eq(errno, EINVAL);
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#endif
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}
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int setup_tests(void)
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{
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ADD_TEST(preserves_system_error);
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return 1;
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}
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