11error: only `u8` can be cast into `char`
2- --> $DIR/cast-char.rs:4:23
2+ --> $DIR/cast-char.rs:12:31
33 |
4- LL | const XYZ : char = 0x1F888 as char;
5- | ^^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{1F888 }'`
4+ LL | const VALID_LOW_1 : char = 0x1000 as char; // 4096
5+ | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{1000 }'`
66 |
77note: the lint level is defined here
88 --> $DIR/cast-char.rs:1:9
@@ -11,10 +11,120 @@ LL | #![deny(overflowing_literals)]
1111 | ^^^^^^^^^^^^^^^^^^^^
1212
1313error: only `u8` can be cast into `char`
14- --> $DIR/cast-char.rs:6:22
14+ --> $DIR/cast-char.rs:14:31
1515 |
16- LL | const XY : char = 129160 as char;
17- | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{1F888 }'`
16+ LL | const VALID_LOW_2 : char = 0xD7FF as char; // last valid in lower range
17+ | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{D7FF }'`
1818
19- error: aborting due to 2 previous errors
19+ error: only `u8` can be cast into `char`
20+ --> $DIR/cast-char.rs:16:31
21+ |
22+ LL | const VALID_LOW_3: char = 0x0500 as char; // cyrillic range
23+ | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{500}'`
24+
25+ error: only `u8` can be cast into `char`
26+ --> $DIR/cast-char.rs:20:32
27+ |
28+ LL | const VALID_HIGH_1: char = 0xE000 as char; // first valid in upper range
29+ | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{E000}'`
30+
31+ error: only `u8` can be cast into `char`
32+ --> $DIR/cast-char.rs:22:32
33+ |
34+ LL | const VALID_HIGH_2: char = 0x1F888 as char; // 129160 - example from issue
35+ | ^^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{1F888}'`
36+
37+ error: only `u8` can be cast into `char`
38+ --> $DIR/cast-char.rs:24:32
39+ |
40+ LL | const VALID_HIGH_3: char = 0x10FFFF as char; // maximum valid Unicode
41+ | ^^^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{10FFFF}'`
42+
43+ error: only `u8` can be cast into `char`
44+ --> $DIR/cast-char.rs:26:32
45+ |
46+ LL | const VALID_HIGH_4: char = 0xFFFD as char; // replacement character
47+ | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{FFFD}'`
48+
49+ error: only `u8` can be cast into `char`
50+ --> $DIR/cast-char.rs:28:32
51+ |
52+ LL | const VALID_HIGH_5: char = 0x1F600 as char; // emoji
53+ | ^^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{1F600}'`
54+
55+ error: surrogate values are not valid for `char`
56+ --> $DIR/cast-char.rs:34:39
57+ |
58+ LL | const INVALID_SURROGATE_1: char = 0xD800 as char; // first surrogate
59+ | ^^^^^^^^^^^^^^
60+ |
61+ = note: surrogate code points [0xD800, 0xDFFF] are reserved for UTF-16 and cannot be used in Rust `char`
62+
63+ error: surrogate values are not valid for `char`
64+ --> $DIR/cast-char.rs:36:39
65+ |
66+ LL | const INVALID_SURROGATE_2: char = 0xDFFF as char; // last surrogate
67+ | ^^^^^^^^^^^^^^
68+ |
69+ = note: surrogate code points [0xD800, 0xDFFF] are reserved for UTF-16 and cannot be used in Rust `char`
70+
71+ error: surrogate values are not valid for `char`
72+ --> $DIR/cast-char.rs:38:39
73+ |
74+ LL | const INVALID_SURROGATE_3: char = 0xDB00 as char; // middle of surrogate range
75+ | ^^^^^^^^^^^^^^
76+ |
77+ = note: surrogate code points [0xD800, 0xDFFF] are reserved for UTF-16 and cannot be used in Rust `char`
78+
79+ error: value exceeds maximum `char` value
80+ --> $DIR/cast-char.rs:42:37
81+ |
82+ LL | const INVALID_TOO_BIG_1: char = 0x110000 as char; // one more than maximum
83+ | ^^^^^^^^^^^^^^^^
84+ |
85+ = note: maximum valid `char` value is 0x10FFFF
86+
87+ error: value exceeds maximum `char` value
88+ --> $DIR/cast-char.rs:44:37
89+ |
90+ LL | const INVALID_TOO_BIG_2: char = 0xEF8888 as char; // example from issue
91+ | ^^^^^^^^^^^^^^^^
92+ |
93+ = note: maximum valid `char` value is 0x10FFFF
94+
95+ error: value exceeds maximum `char` value
96+ --> $DIR/cast-char.rs:46:37
97+ |
98+ LL | const INVALID_TOO_BIG_3: char = 0x1FFFFF as char; // much larger
99+ | ^^^^^^^^^^^^^^^^
100+ |
101+ = note: maximum valid `char` value is 0x10FFFF
102+
103+ error: value exceeds maximum `char` value
104+ --> $DIR/cast-char.rs:48:37
105+ |
106+ LL | const INVALID_TOO_BIG_4: char = 0xFFFFFF as char; // 24-bit maximum
107+ | ^^^^^^^^^^^^^^^^
108+ |
109+ = note: maximum valid `char` value is 0x10FFFF
110+
111+ error: only `u8` can be cast into `char`
112+ --> $DIR/cast-char.rs:52:30
113+ |
114+ LL | const BOUNDARY_1: char = 0xD7FE as char; // valid, before surrogate
115+ | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{D7FE}'`
116+
117+ error: only `u8` can be cast into `char`
118+ --> $DIR/cast-char.rs:54:30
119+ |
120+ LL | const BOUNDARY_2: char = 0xE001 as char; // valid, after surrogate
121+ | ^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{E001}'`
122+
123+ error: only `u8` can be cast into `char`
124+ --> $DIR/cast-char.rs:56:30
125+ |
126+ LL | const BOUNDARY_3: char = 0x10FFFE as char; // valid, near maximum
127+ | ^^^^^^^^^^^^^^^^ help: use a `char` literal instead: `'\u{10FFFE}'`
128+
129+ error: aborting due to 18 previous errors
20130
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