[Issue 24363] New: hex string postfixes are useless
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Tue Jan 30 13:24:16 UTC 2024
https://issues.dlang.org/show_bug.cgi?id=24363
Issue ID: 24363
Summary: hex string postfixes are useless
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: minor
Priority: P1
Component: dmd
Assignee: nobody at puremagic.com
Reporter: dkorpel at live.nl
Hex strings allow a string postfix like any other string literal, but 'w' and
'd' can't create array elements larger than 255, they just pad each byte from
the hex string with 1 or 3 zeros.
```
string a = x"11 22 33 44"c;
wstring b = x"1122 3344"w; // equal to [0x0011, 0x0022, 0x0033, 0x0044]
dstring c = x"11223344"d;
pragma(msg, a.length); // 4
pragma(msg, b.length); // 4
pragma(msg, c.length); // 4
```
It would be more sensible to make the wstring equal to [0x1122, 0x3344] and the
dstring [0x11223344], or to disallow a postfix on a hex string.
In any case, the spec should document the behavior.
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