Configure walrus to generate DWARF/names at the right times

Fixes ##1254

crates/cli-support/Cargo.toml

@@ -16,7 +16,7 @@ base64 = "0.9"
 failure = "0.1.2"
 rustc-demangle = "0.1.13"
 tempfile = "3.0"
-walrus = "0.1"
+walrus = "0.2"
 wasm-bindgen-shared = { path = "../shared", version = '=0.2.36' }
 wasm-bindgen-threads-xform = { path = '../threads-xform', version = '=0.2.36' }
 wasm-bindgen-wasm-interpreter = { path = "../wasm-interpreter", version = '=0.2.36' }

crates/cli-support/src/lib.rs

@@ -157,6 +157,8 @@ impl Bindgen {
                     // include shared memory, so it fails that part of
                     // validation!
                     .strict_validate(false)
+                    .generate_dwarf(self.keep_debug)
+                    .generate_name_section(!self.remove_name_section)
                     .parse(&contents)
                     .context("failed to parse input file as wasm")?;
                 let stem = match &self.out_name {