Rollup merge of #104235 - compiler-errors:more-ct-guar, r=oli-obk

[rust.git] / src / tools / miri / README.md

diff --git a/src/tools/miri/README.md b/src/tools/miri/README.md
index 5803a88c0e757846d1e1661d411d30baf4f04e83..f5a20d592d06d991db5eb23f66535fdcfd08bd95 100644 (file)
--- a/src/tools/miri/README.md
+++ b/src/tools/miri/README.md
@@ -433,8 +433,10 @@ Moreover, Miri recognizes some environment variables:
   trigger a re-build of the standard library; you have to clear the Miri build
   cache manually (on Linux, `rm -rf ~/.cache/miri`).
 * `MIRI_SYSROOT` (recognized by `cargo miri` and the Miri driver) indicates the sysroot to use. When
-  using `cargo miri`, only set this if you do not want to use the automatically created sysroot. For
-  directly invoking the Miri driver, this variable (or a `--sysroot` flag) is mandatory.
+  using `cargo miri`, this skips the automatic setup -- only set this if you do not want to use the
+  automatically created sysroot. For directly invoking the Miri driver, this variable (or a
+  `--sysroot` flag) is mandatory. When invoking `cargo miri setup`, this indicates where the sysroot
+  will be put.
 * `MIRI_TEST_TARGET` (recognized by the test suite and the `./miri` script) indicates which target
   architecture to test against.  `miri` and `cargo miri` accept the `--target` flag for the same
   purpose.