Cranelift: Provide better error messages when failing to parse run …

…arguments (bytecodealliance#6644)
gurry · Jun 26, 2023 · 4c23880 · 4c23880
1 parent 2d34b46
commit 4c23880
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/cranelift/reader/src/parser.rs b/cranelift/reader/src/parser.rs
@@ -49,7 +49,11 @@ macro_rules! match_imm {
                 let text = text.replace("_", "");
                 // Parse it in hexadecimal form.
                 <$unsigned>::from_str_radix(&text[2..], 16).map_err(|_| {
-                    $parser.error("unable to parse value as a hexadecimal immediate")
+                    $parser.error(&format!(
+                        "unable to parse '{}' value as a hexadecimal {} immediate",
+                        &text[2..],
+                        stringify!($unsigned),
+                    ))
                 })?
             } else {
                 // Parse it as a signed type to check for overflow and other issues.