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Diffstat (limited to 'PORTING.md')
| -rw-r--r-- | PORTING.md | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -165,6 +165,17 @@ recommended to avoid the `out` parameter completely and always pass in `NULL`. Note that less error-prone APIs are available for BoringSSL-specific code (see below). +### Memory allocation + +OpenSSL provides wrappers `OPENSSL_malloc` and `OPENSSL_free` over the standard +`malloc` and `free`. Memory allocated by OpenSSL should be released with +`OPENSSL_free`, not the standard `free`. However, by default, they are +implemented directly using `malloc` and `free`, so code which mixes them up +usually works. + +In BoringSSL, these functions maintain additional book-keeping to zero memory +on `OPENSSL_free`, so any mixups must be fixed. + ## Optional BoringSSL-specific simplifications BoringSSL makes some changes to OpenSSL which simplify the API but remain |