From 32d7585b9ff343b194dafc21934408840a9e08d1 Mon Sep 17 00:00:00 2001 From: "Cliff L. Biffle" Date: Wed, 20 Nov 2024 07:32:13 -0800 Subject: [PATCH] build/util: prevent infinite loop if target/ not found Previously, if you attempted to use certain functions in the build_util crate...and your output directory happened to not include any parent directories with the exact name "target"... ...the build script would burn 100% of a core forever, until you killed it. This doesn't affect Hubris-proper but _does_ affect out of tree builds. The original code was arguably wrong anyway, so, this fixes that. --- build/util/src/lib.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/build/util/src/lib.rs b/build/util/src/lib.rs index f8a1bc3d5..333ee17f9 100644 --- a/build/util/src/lib.rs +++ b/build/util/src/lib.rs @@ -95,7 +95,9 @@ pub fn expose_target_board() { std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap()); loop { let done = out_dir.file_name() == Some(OsStr::new("target")); - out_dir.pop(); + if !out_dir.pop() { + panic!("can't find target/ in OUT_DIR"); + } if done { break; }