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contexts: Forbid cloning/destroying secp256k1_context_static

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This commit is contained in:
Tim Ruffing
2022-12-07 14:38:45 +01:00
parent b1579cf5fb
commit 4b6df5e33e
5 changed files with 88 additions and 24 deletions
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6
include/secp256k1.h
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@@ -291,8 +291,11 @@ SECP256K1_API secp256k1_context* secp256k1_context_create(
* called at most once for every call of this function. If you need to avoid dynamic
* memory allocation entirely, see the functions in secp256k1_preallocated.h.
*
* Cloning secp256k1_context_static is not possible, and should not be emulated by
* the caller (e.g., using memcpy). Create a new context instead.
*
* Returns: a newly created context object.
* Args: ctx: an existing context to copy
* Args: ctx: an existing context to copy (not secp256k1_context_static)
*/
SECP256K1_API secp256k1_context* secp256k1_context_clone(
const secp256k1_context* ctx
@@ -310,6 +313,7 @@ SECP256K1_API secp256k1_context* secp256k1_context_clone(
*
* Args: ctx: an existing context to destroy, constructed using
* secp256k1_context_create or secp256k1_context_clone
* (i.e., not secp256k1_context_static).
*/
SECP256K1_API void secp256k1_context_destroy(
secp256k1_context* ctx

8
include/secp256k1_preallocated.h
View File

@@ -88,8 +88,11 @@ SECP256K1_API size_t secp256k1_context_preallocated_clone_size(
* the lifetime of this context object, see the description of
* secp256k1_context_preallocated_create for details.
*
* Cloning secp256k1_context_static is not possible, and should not be emulated by
* the caller (e.g., using memcpy). Create a new context instead.
*
* Returns: a newly created context object.
* Args: ctx: an existing context to copy.
* Args: ctx: an existing context to copy (not secp256k1_context_static).
* In: prealloc: a pointer to a rewritable contiguous block of memory of
* size at least secp256k1_context_preallocated_size(flags)
* bytes, as detailed above.
@@ -117,7 +120,8 @@ SECP256K1_API secp256k1_context* secp256k1_context_preallocated_clone(
*
* Args: ctx: an existing context to destroy, constructed using
* secp256k1_context_preallocated_create or
* secp256k1_context_preallocated_clone.
* secp256k1_context_preallocated_clone
* (i.e., not secp256k1_context_static).
*/
SECP256K1_API void secp256k1_context_preallocated_destroy(
secp256k1_context* ctx