Stop parsing "-" as integer, fixes #22745

rust-lang · Feb 24, 2015 · 948a17e · 948a17e
1 parent 91a5a1a
commit 948a17e
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diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
@@ -1672,6 +1672,7 @@ macro_rules! from_str_radix_int_impl {
                 let is_signed_ty = (0 as $T) > Int::min_value();
 
                 match src.slice_shift_char() {
+                    Some(('-', "")) => Err(PIE { kind: Empty }),
                     Some(('-', src)) if is_signed_ty => {
                         // The number is negative
                         let mut result = 0;

diff --git a/src/libcoretest/num/mod.rs b/src/libcoretest/num/mod.rs
@@ -122,4 +122,9 @@ mod test {
         assert_eq!("-9223372036854775808".parse::<i64>().ok(), Some(i64_val));
         assert_eq!("-9223372036854775809".parse::<i64>().ok(), None);
     }
+
+    #[test]
+    test_int_from_minus_sign() {
+        assert_eq!("-".parse::<i32>().ok(), None);
+    }
 }