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rustdoc-search: fix a race condition in search index loading #118961

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merged 1 commit into from
Dec 15, 2023
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rustdoc-search: fix a race condition in search index loading #118961

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10 changes: 8 additions & 2 deletions src/librustdoc/html/render/write_shared.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -297,7 +297,10 @@ pub(super) fn write_shared(
.replace("\\\"", "\\\\\"")
));
all_sources.sort();
let mut v = String::from("const srcIndex = new Map(JSON.parse('[\\\n");
// This needs to be `var`, not `const`.
// This variable needs declared in the current global scope so that if
// src-script.js loads first, it can pick it up.
let mut v = String::from("var srcIndex = new Map(JSON.parse('[\\\n");
v.push_str(&all_sources.join(",\\\n"));
v.push_str("\\\n]'));\ncreateSrcSidebar();\n");
Ok(v.into_bytes())
Expand All @@ -317,7 +320,10 @@ pub(super) fn write_shared(
// with rustdoc running in parallel.
all_indexes.sort();
write_invocation_specific("search-index.js", &|| {
let mut v = String::from("const searchIndex = new Map(JSON.parse('[\\\n");
// This needs to be `var`, not `const`.
// This variable needs declared in the current global scope so that if
// search.js loads first, it can pick it up.
let mut v = String::from("var searchIndex = new Map(JSON.parse('[\\\n");
v.push_str(&all_indexes.join(",\\\n"));
v.push_str(
r#"\
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