https://issues.dlang.org/show_bug.cgi?id=22473
Issue ID: 22473
Summary: dmd foreach loops throw exceptions on invalid UTF
sequences, use replacementDchar instead
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P1
Component: druntime
Assignee: [email protected]
Reporter: [email protected]
A simple foreach loop:
void test(char[] a)
{
foreach (char c; a) { }
}
will throw a UtfException if `a` is not a valid UTF string. Instead, it should
replace the invalid sequence with replacementDchar.
The foreach code is compiled to call druntime/src/rt/aApply/_aApplycd1(), which
calls druntime/src/core/internal/utf/decode() which throws the exceptions.
replacementDchar is defined in std.utf as `\uFFFD`
The reason to effect this change is it is the same problems autodecoding has.
It can't be turned off, it throws, and it may allocate with the gc. Oh, and
it's slow.
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