[lit] Fix filter-failed-rerun.py on readonly FSes (llvm#177075)

boomanaiden154 · web-flow · commit 8bb659fd237f · 2026-01-21T02:02:30.000Z
This test invokes lit in a directory and then tries to overwrite
fail.txt within that directory. With the project sources mounted as
read-only, fail.txt ends up being marked readonly, which causes cp to
fail without -f. Use cp -f to ensure we overwrite the existing fail.txt.
diff --git a/llvm/utils/lit/tests/filter-failed-rerun.py b/llvm/utils/lit/tests/filter-failed-rerun.py
@@ -6,7 +6,7 @@
 #
 # RUN: not %{lit} %t | FileCheck %s --check-prefix=CHECK-FIRST
 #
-# RUN: cp %t%{fs-sep}pass.txt %t%{fs-sep}fail.txt
+# RUN: cp -f %t%{fs-sep}pass.txt %t%{fs-sep}fail.txt
 # RUN: not %{lit} %t | FileCheck %s --check-prefix=CHECK-SECOND
 # RUN: not %{lit} --filter-failed %t | FileCheck %s --check-prefix=CHECK-THIRD
 

Original file line number	Diff line number	Diff line change
`@@ -6,7 +6,7 @@`
`6`	`6`	`#`
`7`	`7`	`# RUN: not %{lit} %t \| FileCheck %s --check-prefix=CHECK-FIRST`
`8`	`8`	`#`
`9`		`-# RUN: cp %t%{fs-sep}pass.txt %t%{fs-sep}fail.txt`
	`9`	`+# RUN: cp -f %t%{fs-sep}pass.txt %t%{fs-sep}fail.txt`
`10`	`10`	`# RUN: not %{lit} %t \| FileCheck %s --check-prefix=CHECK-SECOND`
`11`	`11`	`# RUN: not %{lit} --filter-failed %t \| FileCheck %s --check-prefix=CHECK-THIRD`
`12`	`12`