[ASan][Windows] Interception fix for 'mov al, byte ptr []' sequences (#72531)

2026-01-24 17:01:00 +08:00 · 2023-12-07 10:17:58 -05:00
parent f1200ca7ac
commit cbe27c45cd
1 changed files with 1 additions and 0 deletions
--- a/compiler-rt/lib/interception/interception_win.cpp
+++ b/compiler-rt/lib/interception/interception_win.cpp
@@ -578,6 +578,7 @@ static size_t GetInstructionSize(uptr address, size_t* rel_offset = nullptr) {
    case 0x018a:  // mov al, byte ptr [rcx]
      return 2;

+    case 0x058A:  // 8A 05 XX XX XX XX : mov al, byte ptr [XX XX XX XX]
    case 0x058B:  // 8B 05 XX XX XX XX : mov eax, dword ptr [XX XX XX XX]
      if (rel_offset)
        *rel_offset = 2;