From f20e10686ca4c295402b3e6adb061102967c6e3f Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Sun, 24 Jan 2021 21:43:20 +0900
Subject: Prohibit `r` suffix after scientific notation (e.g. `1e10`).

As CRuby does.
---
 mrbgems/mruby-compiler/core/parse.y | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'mrbgems/mruby-compiler/core/parse.y')

diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index 53cd4ffad..3551e8385 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -5856,6 +5856,10 @@ parser_yylex(parser_state *p)
         errno = 0;
       }
       suffix = number_literal_suffix(p);
+      if (seen_e && (suffix & NUM_SUFFIX_R)) {
+        pushback(p, 'r');
+        suffix &= ~NUM_SUFFIX_R;
+      }
       pylval.nd = new_float(p, tok(p), suffix);
       return tFLOAT;
 #endif
-- 
cgit v1.2.3