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stage2: fix contents hash computation

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during an incremental update change detection,
the function call to get the old contents hash took place
after mangling the old ZIR index, making it access the wrong
array index.
This commit is contained in:
Andrew Kelley
2021-05-05 17:00:10 -07:00
parent 9b1aac8a65
commit 17067e0e6b
1 changed files with 1 additions and 1 deletions
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2
src/Module.zig
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@@ -2436,6 +2436,7 @@ fn updateZirRefs(gpa: *Allocator, file: *Scope.File, old_zir: Zir) !UpdateChange
// Anonymous decls and the root decl have this set to 0. We still need
// to walk them but we do not need to modify this value.
if (decl.zir_decl_index != 0) {
const old_hash = decl.contentsHashZir(old_zir);
decl.zir_decl_index = extra_map.get(decl.zir_decl_index) orelse {
try deleted_decls.append(gpa, decl);
continue;
@@ -2446,7 +2447,6 @@ fn updateZirRefs(gpa: *Allocator, file: *Scope.File, old_zir: Zir) !UpdateChange
};
decl.name = new_zir.nullTerminatedString(new_name_index).ptr;
const old_hash = decl.contentsHashZir(old_zir);
const new_hash = decl.contentsHashZir(new_zir);
if (!std.zig.srcHashEql(old_hash, new_hash)) {
try outdated_decls.append(gpa, decl);