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docs(ffi): note that hyper_buf_copy can return NULL on error #2638

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Merged
merged 1 commit into from
Aug 26, 2021
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docs(ffi): note that hyper_buf_copy can return NULL on error #2638

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2 changes: 2 additions & 0 deletions capi/include/hyper.h
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Original file line number Diff line number Diff line change
Expand Up @@ -299,6 +299,8 @@ void hyper_body_set_data_func(struct hyper_body *body, hyper_body_data_callback

This makes an owned copy of the bytes, so the `buf` argument can be
freed or changed afterwards.

This returns `NULL` if allocating a new buffer fails.
*/
struct hyper_buf *hyper_buf_copy(const uint8_t *buf, size_t len);

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2 changes: 2 additions & 0 deletions src/ffi/body.rs
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Expand Up @@ -185,6 +185,8 @@ ffi_fn! {
///
/// This makes an owned copy of the bytes, so the `buf` argument can be
/// freed or changed afterwards.
///
/// This returns `NULL` if allocating a new buffer fails.
fn hyper_buf_copy(buf: *const u8, len: size_t) -> *mut hyper_buf {
let slice = unsafe {
std::slice::from_raw_parts(buf, len)
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