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stage2: fix crash in switch compile error

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when the AST for the switch has never been loaded
This commit is contained in:
Andrew Kelley
2021-05-17 19:11:11 -07:00
parent 67f5a28257
commit 1d808d0dd2
3 changed files with 15 additions and 10 deletions
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9
src/Module.zig
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@@ -4419,13 +4419,20 @@ pub const SwitchProngSrc = union(enum) {
/// the LazySrcLoc in order to emit a compile error.
pub fn resolve(
prong_src: SwitchProngSrc,
gpa: *Allocator,
decl: *Decl,
switch_node_offset: i32,
range_expand: RangeExpand,
) LazySrcLoc {
@setCold(true);
const tree = decl.namespace.file_scope.getTree(gpa) catch |err| {
// In this case we emit a warning + a less precise source location.
log.warn("unable to load {s}: {s}", .{
decl.namespace.file_scope.sub_file_path, @errorName(err),
});
return LazySrcLoc{ .node_offset = 0};
};
const switch_node = decl.relativeToNodeIndex(switch_node_offset);
const tree = decl.namespace.file_scope.tree;
const main_tokens = tree.nodes.items(.main_token);
const node_datas = tree.nodes.items(.data);
const node_tags = tree.nodes.items(.tag);