odin build with -obfuscate-source-code-locations still leaves absolute paths in the output binary

[VaskoBozhurski]

Context

When I try to build my project using odin build . -o:speed -obfuscate-source-code-locations there are a lot of absolute source code paths from my project as well as from the Odin core libraries.

        Odin:    dev-2025-01-nightly:2aae4cf
        OS:      Windows 11 Enterprise (version: 23H2), build 22631.4751
        CPU:     11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz
        RAM:     16087 MiB
        Backend: LLVM 18.1.8

Expected Behavior

I expect builds with the -obfuscate-source-code-locations flag to obfuscate all absolute source code paths to the Odin root directory as well as to my own project's directory.

Current Behavior

-obfuscate-source-code-locations does not hide all source code locations from the binary output.

Steps to Reproduce

1. Save following source file:

package example

main :: proc() {
	arr: [10]int = {}
	slice := arr[:]
	for i := 0; i < 10; i += 1 {
		slice[i] = i
	}
}

2. odin build . -o:speed -obfuscate-source-code-locations
3. Open the output binary with a text editor and search for Odin root (in my case that is C:/odin/) directory paths.

Currently for the snippet above it included the following absolute paths:

C:/odin/base/runtime/entry_windows.odin
C:/odin/base/runtime/default_temp_allocator_arena.odin
C:/odin/base/runtime/heap_allocator.odin

[VaskoBozhurski]

After some testing I found 2 things that escape the obfuscation:

1. Bounds checking where when I used -no-bounds-check a majority of the unobfuscated embeddings were gone.
2. Type casting a union using actual := u.(int) there is some file name generation as well. Interestingly when I did actual, ok :=u.(int) the embedded string disappears.