fix: 🐛 inclusive/exclusive range bound error

Author: richard-uk1

compiler/rustc_lexer/src/lib.rs

@@ -687,7 +687,7 @@ impl Cursor<'_> {
                                 suffix_start = self.pos_within_token();
                             }
                         }
-                        ('e' | 'E', '0'..'9' | '+' | '-') => {
+                        ('e' | 'E', '0'..='9' | '+' | '-') => {
                             // definitely an exponent
                             self.bump();
                             empty_exponent = !self.eat_float_exponent();

tests/ui/consts/custom-suffixes.rs

@@ -7,14 +7,16 @@ fn main() {
     const _B: f64 = 1f64;
     const _C: f64 = 1.0f64;
     const _D: f64 = 1e6;
-    const _E: f64 = 1e-6;
-    const _F: f64 = 1.0e-6;
-    const _G: f64 = 1.0e06;
-    const _H: f64 = 1.0e+6;
-    const _I: f64 = 1.0e-6;
+    const _E: f64 = 1.0e9;
+    const _F: f64 = 1e-6;
+    const _G: f64 = 1.0e-6;
+    const _H: f64 = 1.0e06;
+    const _I: f64 = 1.0e+6;
+    const _J: f64 = 1.0e-6;
     // these ones are perhaps more suprising.
-    const _J: f64 = 1.0e0________________________6;
-    const _K: f64 = 1.0e________________________6;
-    const _L: f64 = 1.0e+________________________6;
-    const _M: f64 = 1.0e-________________________6;
+    const _K: f64 = 1.0e0________________________6;
+    const _L: f64 = 1.0e________________________6;
+    const _M: f64 = 1.0e+________________________6;
+    const _N: f64 = 1.0e-________________________6;
+    const _O: f64 = 1.0e-________________________9;
 }