Auto merge of #138450 - matthiaskrgr:rollup-4im25vf, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #137816 (attempt to support `BinaryFormat::Xcoff` in `naked_asm!`)
 - #138109 (make precise capturing args in rustdoc Json typed)
 - #138343 (Enable `f16` tests for `powf`)
 - #138356 (bump libc to 0.2.171 to fix xous)
 - #138371 (Update compiletest's `has_asm_support` to match rustc)
 - #138404 (Cleanup sysroot locating a bit)

r? `@ghost`
`@rustbot` modify labels: rollup

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -1288,8 +1288,7 @@ fn link_sanitizer_runtime(
         if path.exists() {
             sess.target_tlib_path.dir.clone()
         } else {
-            let default_sysroot =
-                filesearch::get_or_default_sysroot().expect("Failed finding sysroot");
+            let default_sysroot = filesearch::get_or_default_sysroot();
             let default_tlib =
                 filesearch::make_target_lib_path(&default_sysroot, sess.opts.target_triple.tuple());
             default_tlib