fix mmap error case

project.4coder

@@ -49,7 +49,8 @@ commands =
   {
     //.win = "build rdi_from_pdb rdi_dump && pushd build && rdi_from_pdb --pdb:mule_main.pdb --out:mule_main.rdi && rdi_dump mule_main.rdi > mule_main.dump && popd",
     //.win = "build raddbg telemetry",
-    .win = "build ryan_scratch",
+    //.win = "build ryan_scratch",
+    .win = "wsl ./build.sh ryan_scratch",
     .linux = "",
     .out = "*compilation*",
     .footer_panel = true,
@@ -69,6 +70,7 @@ commands =
   {
     // .win = "pushd build && raddbg.exe --user:local_dev.raddbg_user --project:local_dev.raddbg_project && popd",
     .win = "pushd build && ryan_scratch.exe && popd",
+    .win = "wsl ./build/ryan_scratch",
     .linux = "",
     .out = "*compilation*",
     .footer_panel = true,

src/os/core/linux/os_core_linux.c

@@ -162,6 +162,10 @@ internal void *
 os_reserve(U64 size)
 {
   void *result = mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+  if(result == MAP_FAILED)
+  {
+    result = 0;
+  }
   return result;
 }
 
@@ -191,6 +195,10 @@ internal void *
 os_reserve_large(U64 size)
 {
   void *result = mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_HUGETLB, -1, 0);
+  if(result == MAP_FAILED)
+  {
+    result = 0;
+  }
   return result;
 }
 
@@ -497,6 +505,10 @@ os_file_map_view_open(OS_Handle map, OS_AccessFlags flags, Rng1U64 range)
   if(flags & OS_AccessFlag_Read)  { prot_flags |= PROT_READ; }
   int map_flags = MAP_PRIVATE;
   void *base = mmap(0, dim_1u64(range), prot_flags, map_flags, fd, range.min);
+  if(base == MAP_FAILED)
+  {
+    base = 0;
+  }
   return base;
 }
 
@@ -637,6 +649,10 @@ os_shared_memory_view_open(OS_Handle handle, Rng1U64 range)
   if(os_handle_match(handle, os_handle_zero())){return 0;}
   int id = (int)handle.u64[0];
   void *base = mmap(0, dim_1u64(range), PROT_READ|PROT_WRITE, MAP_SHARED, id, range.min);
+  if(base == MAP_FAILED)
+  {
+    base = 0;
+  }
   return base;
 }