Commit 4041cc06d5a0327c6d6d7e0bdec8516df06cb5ba | zig | Meg's Mirrors

author	Ryan Liptak <squeek502@hotmail.com> 2025-01-31 02:04:02-08:00
committer	Ryan Liptak <squeek502@hotmail.com> 2025-02-03 17:07:28-08:00
log	4041cc06d5a0327c6d6d7e0bdec8516df06cb5ba
tree	e8a804a5805f41ffb4ffc93098ce06144b88e3f6
parent	b46f9945a81012ecd3ceca7152dd6faadf4815c9

Allocator/Random: document that comparing `ptr` may result in illegal behavior

See #21756 and #17704

2 files changed, 7 insertions(+), 1 deletions(-)

lib
- std
  - Random.zig
  - mem
    Allocator.zig

lib/std/Random.zig+3

...	...	@@ -29,6 +29,9 @@ pub const RomuTrio = @import("Random/RomuTrio.zig");
29	29	pub const SplitMix64 = @import("Random/SplitMix64.zig");
30	30	pub const ziggurat = @import("Random/ziggurat.zig");
31	31
	32	/// Any comparison of this field may result in illegal behavior, since it may be set to
	33	/// `undefined` in cases where the random implementation does not have any associated
	34	/// state.
32	35	ptr: *anyopaque,
33	36	fillFn: const fn (ptr: anyopaque, buf: []u8) void,
34	37

lib/std/mem/Allocator.zig+4-1

...	...	@@ -10,7 +10,10 @@ const builtin = @import("builtin");
10	10	pub const Error = error{OutOfMemory};
11	11	pub const Log2Align = math.Log2Int(usize);
12	12
13		// The type erased pointer to the allocator implementation
	13	/// The type erased pointer to the allocator implementation.
	14	/// Any comparison of this field may result in illegal behavior, since it may be set to
	15	/// `undefined` in cases where the allocator implementation does not have any associated
	16	/// state.
14	17	ptr: *anyopaque,
15	18	vtable: *const VTable,
16	19