From 23edde6fef4321d30f9f2f8c75e6cbfd59b75ca4 Mon Sep 17 00:00:00 2001
From: Philip Herron <philip.herron@embecosm.com>
Date: Tue, 19 Jan 2021 16:14:12 +0000
Subject: Fixes the ^= and %= compound expression parsing.

The input needed to be skipped once the operator was parsed to ensure
the lexer did not duplicate the operator. |= still fails but this looks
to be a parser problem.
---
 gcc/rust/lex/rust-lex.cc | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'gcc')

diff --git a/gcc/rust/lex/rust-lex.cc b/gcc/rust/lex/rust-lex.cc
index 4606a6c..6dfaea2 100644
--- a/gcc/rust/lex/rust-lex.cc
+++ b/gcc/rust/lex/rust-lex.cc
@@ -466,7 +466,9 @@ Lexer::build_token ()
 	  if (peek_input () == '=')
 	    {
 	      // modulo-assign
+	      skip_input ();
 	      current_column += 2;
+
 	      return Token::make (PERCENT_EQ, loc);
 	    }
 	  else
@@ -479,7 +481,9 @@ Lexer::build_token ()
 	  if (peek_input () == '=')
 	    {
 	      // xor-assign?
+	      skip_input ();
 	      current_column += 2;
+
 	      return Token::make (CARET_EQ, loc);
 	    }
 	  else
-- 
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