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openssl: don’t call CRYTPO_cleanup_all_ex_data

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The OpenSSL function CRYTPO_cleanup_all_ex_data() cannot be called
multiple times without crashing - and other libs might call it! We
basically cannot call it without risking a crash. The function is a
no-op since OpenSSL 1.1.0.

Not calling this function only risks a small memory leak with OpenSSL <
1.1.0.

Bug: https://curl.haxx.se/mail/lib-2016-09/0045.html
Reported-by: Todd Short
This commit is contained in:
Daniel Stenberg 2016-09-19 11:33:14 +02:00
parent fb0032a33e
commit de71e68000
3 changed files with 1 additions and 9 deletions
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5
lib/vtls/openssl.c
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@ -748,11 +748,6 @@ void Curl_ossl_cleanup(void)
ENGINE_cleanup();
#endif
#ifdef HAVE_CRYPTO_CLEANUP_ALL_EX_DATA
/* Free OpenSSL ex_data table */
CRYPTO_cleanup_all_ex_data();
#endif
/* Free OpenSSL error strings */
ERR_free_strings();