Commit 95ab942184

@@ -11861,10 +11861,14 @@ fn zirBuiltinSrc(
     const file_name_val = blk: {
         var anon_decl = try block.startAnonDecl(src);
         defer anon_decl.deinit();
-        const name = try fn_owner_decl.getFileScope().fullPathZ(anon_decl.arena());
+        const relative_path = try fn_owner_decl.getFileScope().fullPath(sema.arena);
+        const absolute_path = std.fs.realpathAlloc(sema.arena, relative_path) catch |err| {
+            return sema.fail(block, src, "failed to get absolute path of file '{s}': {s}", .{ relative_path, @errorName(err) });
+        };
+        const aboslute_duped = try anon_decl.arena().dupeZ(u8, absolute_path);
         const new_decl = try anon_decl.finish(
-            try Type.Tag.array_u8_sentinel_0.create(anon_decl.arena(), name.len),
-            try Value.Tag.bytes.create(anon_decl.arena(), name[0 .. name.len + 1]),
+            try Type.Tag.array_u8_sentinel_0.create(anon_decl.arena(), aboslute_duped.len),
+            try Value.Tag.bytes.create(anon_decl.arena(), aboslute_duped[0 .. aboslute_duped.len + 1]),
             0, // default alignment
         );
         break :blk try Value.Tag.decl_ref.create(sema.arena, new_decl);
@@ -11875,6 +11879,7 @@ fn zirBuiltinSrc(
     field_values[0] = file_name_val;
     // fn_name: [:0]const u8,
     field_values[1] = func_name_val;
+    // TODO these should be runtime only!
     // line: u32
     field_values[2] = try Value.Tag.int_u64.create(sema.arena, extra.line + 1);
     // column: u32,