Auto merge of #98851 - klensy:encode_symbols, r=cjgillot

rustc_metadata: dedupe strings to prevent multiple copies in rmeta/query cache blow file size

r? `@cjgillot`

Encodes strings in rmeta/query cache so duplicated ones will be encoded as offsets to first strings, reducing file size.

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index 2f3519e3edd..156f53ac486 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -1852,14 +1852,14 @@ impl fmt::Display for Symbol {
 }
 
 impl<S: Encoder> Encodable<S> for Symbol {
-    fn encode(&self, s: &mut S) {
+    default fn encode(&self, s: &mut S) {
         s.emit_str(self.as_str());
     }
 }
 
 impl<D: Decoder> Decodable<D> for Symbol {
     #[inline]
-    fn decode(d: &mut D) -> Symbol {
+    default fn decode(d: &mut D) -> Symbol {
         Symbol::intern(&d.read_str())
     }
 }