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slicing sentinel-terminated slice without end

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now results in a sentinel-terminated slice.
This commit is contained in:
Andrew Kelley
2020-03-19 10:54:20 -04:00
parent 61266d2621
commit f824658e13
2 changed files with 83 additions and 0 deletions
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4
src/ir.cpp
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@@ -26249,6 +26249,7 @@ static IrInstGen *ir_analyze_instruction_slice(IrAnalyze *ira, IrInstSrcSlice *i
end = nullptr;
}
ZigValue *slice_sentinel_val = nullptr;
ZigType *non_sentinel_slice_ptr_type;
ZigType *elem_type;
@@ -26299,6 +26300,7 @@ static IrInstGen *ir_analyze_instruction_slice(IrAnalyze *ira, IrInstSrcSlice *i
}
} else if (is_slice(array_type)) {
ZigType *maybe_sentineled_slice_ptr_type = array_type->data.structure.fields[slice_ptr_index]->type_entry;
slice_sentinel_val = maybe_sentineled_slice_ptr_type->data.pointer.sentinel;
non_sentinel_slice_ptr_type = adjust_ptr_sentinel(ira->codegen, maybe_sentineled_slice_ptr_type, nullptr);
elem_type = non_sentinel_slice_ptr_type->data.pointer.child_type;
} else {
@@ -26376,6 +26378,8 @@ static IrInstGen *ir_analyze_instruction_slice(IrAnalyze *ira, IrInstSrcSlice *i
PtrLenSingle, ptr_byte_alignment, 0, 0, false);
goto done_with_return_type;
}
} else if (array_sentinel == nullptr && end == nullptr) {
array_sentinel = slice_sentinel_val;
}
if (array_sentinel != nullptr) {
// TODO deal with non-abi-alignment here