[all-commits] [llvm/llvm-project] 56f28d: [asan] Allow OOM Policy Injection in Allocator::Al...

[Justin T. Gibbs via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 56f28d538f737bcd50081f75fbb8c01d0bc80c38
      https://github.com/llvm/llvm-project/commit/56f28d538f737bcd50081f75fbb8c01d0bc80c38
  Author: Justin T. Gibbs <gibbs at scsiguy.com>
  Date:   2026-05-31 (Sun, 31 May 2026)

  Changed paths:
    M compiler-rt/lib/asan/asan_allocator.cpp

  Log Message:
  -----------
  [asan] Allow OOM Policy Injection in Allocator::Allocate API (#196413)

Groundwork for #196388.

Allocator::Allocate() previously unconditionally applied the global
OOM policy as dictated by the AllocatorMayReturnNull() flag: return
nullptr or abort via Report*+Die(). Introduce Allocator::AllocateImpl()
which delegates this decision to the caller via its 'may_return_null'
boolean parameter, allowing future changes to the operator new
implementation to fully control this behavior.

Implementation:

  * Rename Allocator::Allocate(...) to Allocator::AllocateImpl(...) and
    add a may_return_null parameter that replaces the three internal
    AllocatorMayReturnNull() calls (RSS limit, oversize, OOM).

  * Reintroduce Allocator::Allocate(...) as a thin wrapper that calls
    AllocateImpl(..., AllocatorMayReturnNull()), preserving the
    flag-deferring semantics for every existing caller.

NFC.



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