From 153d78ec6ab6a8fa60c58b5940722ca202e8bd2f Mon Sep 17 00:00:00 2001
From: Nikita Smith <git.nikita.smith@gmail.com>
Date: Fri, 20 Jun 2025 13:03:01 -0700
Subject: [PATCH] unpoison memory-mapped files

---
 src/linker/lnk_io.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/linker/lnk_io.c b/src/linker/lnk_io.c
index f3513117..c9626617 100644
--- a/src/linker/lnk_io.c
+++ b/src/linker/lnk_io.c
@@ -224,6 +224,8 @@ THREAD_POOL_TASK_FUNC(lnk_memory_map_file_task)
       GetFileSizeEx(file_handle, &file_size);
       void *file_data = MapViewOfFile(mapping_handle, FILE_MAP_COPY, 0, 0, file_size.QuadPart);
       if (file_data) {
+        // asan crashes for an unknown reason on memory-mapped files, even though the allocation is perfectly fine
+        AsanUnpoisonMemoryRegion(file_data, file_size.QuadPart);
         task->data_arr.v[task_id] = str8(file_data, file_size.QuadPart);
       }
       CloseHandle(mapping_handle);