Rollup merge of #106829 - compiler-errors:more-alias-combine, r=spastorino

[rust.git] / src / doc / rustc / src / instrument-coverage.md

diff --git a/src/doc/rustc/src/instrument-coverage.md b/src/doc/rustc/src/instrument-coverage.md
index 38fd5c96997631d1ce77b3348e88b7754a8ca63b..da91e25595cc760f117b1eb265748e96ce0c4c6b 100644 (file)
--- a/src/doc/rustc/src/instrument-coverage.md
+++ b/src/doc/rustc/src/instrument-coverage.md
@@ -201,6 +201,8 @@ $ RUSTFLAGS="-C instrument-coverage" \
     cargo test --tests
 ```
 
+> **Note**: The default for `LLVM_PROFILE_FILE` is `default_%m_%p.profraw`. Versions prior to 1.65 had a default of `default.profraw`, so if using those earlier versions, it is recommended to explicitly set `LLVM_PROFILE_FILE="default_%m_%p.profraw"` to avoid having multiple tests overwrite the `.profraw` files.
+
 Make note of the test binary file paths, displayed after the word "`Running`" in the test output:
 
 ```text