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Description: Fix get_toml() when cfg(test)
When cfg(test), Config::parse doesn't parse a config.toml but uses default
values, failing when the initial rustc is needed. This is a workaround before
upstream issue gets solved.
Bug: https://github.com/rust-lang/rust/issues/105766
Last-Update: 2023-03-29
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
Index: rust/src/bootstrap/config.rs
===================================================================
--- rust.orig/src/bootstrap/config.rs
+++ rust/src/bootstrap/config.rs
@@ -1040,9 +1040,32 @@ impl Config {
pub fn parse(args: &[String]) -> Config {
#[cfg(test)]
- fn get_toml(_: &Path) -> TomlConfig {
- TomlConfig::default()
- }
+ fn get_toml(file: &Path) -> TomlConfig {
+ // Debian: We use previous version as a custom rustc, which
+ // unfortunately won't be picked up because config.toml isn't
+ // read when cfg!(test). Making tests use the entirety of our
+ // config.toml isn't feasible either as it panicks on
+ // GitRepo::Llvm (d-bootstrap-custom-debuginfo-path.patch), so
+ // only give paths of initial rustc and cargo.
+ let contents =
+ t!(fs::read_to_string(file), format!("config file {} not found", file.display()));
+ // Deserialize to Value and then TomlConfig to prevent the Deserialize impl of
+ // TomlConfig and sub types to be monomorphized 5x by toml.
+ toml::from_str(&contents)
+ .and_then(|table: toml::Value| TomlConfig::deserialize(table))
+ .map(|table| {
+ let mut config = TomlConfig::default();
+ let mut build = Build::default();
+ let cbuild = table.build.unwrap();
+ build.rustc = cbuild.rustc;
+ build.cargo = cbuild.cargo;
+ config.build = Some(build);
+ config
+ })
+ .unwrap_or_else(|err| {
+ eprintln!("failed to parse TOML configuration '{}': {err}", file.display());
+ crate::detail_exit(2);
+ }) }
#[cfg(not(test))]
fn get_toml(file: &Path) -> TomlConfig {
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