mirror of
https://github.com/protocolbuffers/protobuf
synced 2026-08-26 02:23:14 -04:00
a9bc366522
Besides unnecessary inconsistency on our C symbols, double underscores anywhere in the name are reserved for stdlib use. In practice its unlikely these symbols would ever hit a collision problem (maybe the prior name 'utf8_debug_string' with no prefix as having some risk), but safer to just standardize on this and have no concerns going forward. PiperOrigin-RevId: 648709299
20 lines
732 B
Rust
20 lines
732 B
Rust
// Protocol Buffers - Google's data interchange format
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// Copyright 2023 Google LLC. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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use std::alloc::{alloc, Layout};
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#[no_mangle]
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extern "C" fn rust_proto_alloc(size: usize, align: usize) -> *mut u8 {
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if size == 0 {
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// A 0-sized layout is legal but the global allocator isn't required to support
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// it so return a dangling pointer instead.
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std::ptr::null_mut::<u8>().wrapping_add(align)
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} else {
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let layout = Layout::from_size_align(size, align).unwrap();
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unsafe { alloc(layout) }
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}
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}
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