From f9a43b982d1e59213b313e0e5705bbf74818f621 Mon Sep 17 00:00:00 2001
From: dan sinclair <dsinclair@chromium.org>
Date: Sun, 24 Jul 2022 19:45:17 +0000
Subject: [PATCH] Remove unused string.

We saved the string in the lexer try_float for use in error messages,
then changed the message to not show the string. This CL removes the
creation of the float string.

Change-Id: I9bb381bebe31f25609c66d5ccda91de0277199cc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/97069
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
---
 src/tint/reader/wgsl/lexer.cc | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/tint/reader/wgsl/lexer.cc b/src/tint/reader/wgsl/lexer.cc
index 22eedda1ed..93392b6e55 100644
--- a/src/tint/reader/wgsl/lexer.cc
+++ b/src/tint/reader/wgsl/lexer.cc
@@ -357,9 +357,6 @@ Token Lexer::try_float() {
         return {};
     }
 
-    // Save the error string, for use by diagnostics.
-    const auto str = std::string{substr(start, end - start)};
-
     advance(end - start);
     end_source(source);