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stage1: Fix crash in can_mutate_comptime_var_state

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No lazy value can mutate global state, no need to resolve them.

Closes #7426
This commit is contained in:
LemonBoy 2020-12-13 20:27:04 +01:00
parent d569e37cb5
commit 561565fa81
1 changed files with 22 additions and 0 deletions
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22
src/stage1/analyze.cpp
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@ -5749,6 +5749,28 @@ static bool can_mutate_comptime_var_state(ZigValue *value) {
assert(value != nullptr);
if (value->special == ConstValSpecialUndef)
return false;
if (value->special == ConstValSpecialLazy) {
// No lazy value has side effects.
// Use a switch here to get a compile error whenever a new kind of lazy
// value is added.
switch (value->data.x_lazy->id) {
case LazyValueIdInvalid:
zig_unreachable();
case LazyValueIdAlignOf:
case LazyValueIdSizeOf:
case LazyValueIdPtrType:
case LazyValueIdOptType:
case LazyValueIdSliceType:
case LazyValueIdFnType:
case LazyValueIdErrUnionType:
case LazyValueIdArrayType:
case LazyValueIdTypeInfoDecls:
return false;
}
}
switch (value->type->id) {
case ZigTypeIdInvalid:
zig_unreachable();