Add the kind of input from rust-lang#31109 to the expensive tests (not run by default)

Author: Robin Kruppe

src/etc/test-float-parse/_common.rs

@@ -16,7 +16,7 @@ use std::mem::transmute;
 #[allow(dead_code)]
 pub const SEED: [u32; 3] = [0x243f_6a88, 0x85a3_08d3, 0x1319_8a2e];
 
-pub fn validate(text: String) {
+pub fn validate(text: &str) {
     let mut out = io::stdout();
     let x: f64 = text.parse().unwrap();
     let f64_bytes: u64 = unsafe { transmute(x) };

src/etc/test-float-parse/few-ones.rs

@@ -20,7 +20,7 @@ fn main() {
     for a in &pow {
         for b in &pow {
             for c in &pow {
-                validate((a | b | c).to_string());
+                validate(&(a | b | c).to_string());
             }
         }
     }

src/etc/test-float-parse/huge-pow10.rs

@@ -15,7 +15,7 @@ use _common::validate;
 fn main() {
     for e in 300..310 {
         for i in 0..100000 {
-            validate(format!("{}e{}", i, e));
+            validate(&format!("{}e{}", i, e));
         }
     }
 }

src/etc/test-float-parse/long-fractions.rs

@@ -0,0 +1,27 @@
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+mod _common;
+
+use std::char;
+use _common::validate;
+
+fn main() {
+    for n in 0..10 {
+        let digit = char::from_digit(n, 10).unwrap();
+        let mut s = "0.".to_string();
+        for _ in 0..400 {
+            s.push(digit);
+            if s.parse::<f64>().is_ok() {
+                validate(&s);
+            }
+        }
+    }
+}

src/etc/test-float-parse/many-digits.rs

@@ -23,9 +23,9 @@ fn main() {
     let mut rnd = IsaacRng::from_seed(&SEED);
     let mut range = Range::new(0, 10);
     for _ in 0..5_000_000u64 {
-        let num_digits = rnd.gen_range(100, 300);
+        let num_digits = rnd.gen_range(100, 400);
         let digits = gen_digits(num_digits, &mut range, &mut rnd);
-        validate(digits);
+        validate(&digits);
     }
 }
 

src/etc/test-float-parse/rand-f64.rs

@@ -25,7 +25,7 @@ fn main() {
         let bits = rnd.next_u64();
         let x: f64 = unsafe { transmute(bits) };
         if x.is_finite() {
-            validate(format!("{:e}", x));
+            validate(&format!("{:e}", x));
             i += 1;
         }
     }

src/etc/test-float-parse/short-decimals.rs

@@ -22,8 +22,8 @@ fn main() {
             if i % 10 == 0 {
                 continue;
             }
-            validate(format!("{}e{}", i, e));
-            validate(format!("{}e-{}", i, e));
+            validate(&format!("{}e{}", i, e));
+            validate(&format!("{}e-{}", i, e));
         }
     }
 }

src/etc/test-float-parse/subnorm.rs

@@ -16,8 +16,8 @@ use _common::validate;
 fn main() {
     for bits in 0u32..(1 << 21) {
         let single: f32 = unsafe { transmute(bits) };
-        validate(format!("{:e}", single));
+        validate(&format!("{:e}", single));
         let double: f64 = unsafe { transmute(bits as u64) };
-        validate(format!("{:e}", double));
+        validate(&format!("{:e}", double));
     }
 }

src/etc/test-float-parse/tiny-pow10.rs

@@ -15,7 +15,7 @@ use _common::validate;
 fn main() {
     for e in 301..327 {
         for i in 0..100000 {
-            validate(format!("{}e-{}", i, e));
+            validate(&format!("{}e-{}", i, e));
         }
     }
 }

src/etc/test-float-parse/u32-small.rs

@@ -14,6 +14,6 @@ use _common::validate;
 
 fn main() {
     for i in 0..(1 << 19) {
-        validate(i.to_string());
+        validate(&i.to_string());
     }
 }

src/etc/test-float-parse/u64-pow2.rs

@@ -16,13 +16,13 @@ use std::u64;
 fn main() {
     for exp in 19..64 {
         let power: u64 = 1 << exp;
-        validate(power.to_string());
+        validate(&power.to_string());
         for offset in 1..123 {
-            validate((power + offset).to_string());
-            validate((power - offset).to_string());
+            validate(&(power + offset).to_string());
+            validate(&(power - offset).to_string());
         }
     }
     for offset in 0..123 {
-        validate((u64::MAX - offset).to_string());
+        validate(&(u64::MAX - offset).to_string());
     }
 }