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fix edge cases

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Brendan Hansknecht 2023-03-14 23:40:44 -07:00
parent 3dd16d2114
commit 19039ea5bd
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1 changed files with 10 additions and 1 deletions
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11
crates/compiler/builtins/bitcode/src/str.zig
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@ -220,7 +220,7 @@ pub const RocStr = extern struct {
const element_width = 1;
const old_capacity = self.getCapacity();
if (self.isSmallStr() or !self.isUnique()) {
if (self.isSmallStr() or self.isSeamlessSlice() or !self.isUnique()) {
return self.reallocateFresh(new_length);
}
@ -1906,6 +1906,15 @@ pub fn fromUtf8RangeC(
}
pub fn fromUtf8Range(arg: RocList, start: usize, count: usize, update_mode: UpdateMode) FromUtf8Result {
if (arg.len() == 0 or count == 0) {
arg.decref(RocStr.alignment);
return FromUtf8Result{
.is_ok = true,
.string = RocStr.empty(),
.byte_index = 0,
.problem_code = Utf8ByteProblem.InvalidStartByte,
};
}
const bytes = @ptrCast([*]const u8, arg.bytes)[start..count];
if (isValidUnicode(bytes)) {