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authorRafael Espindola <rafael.espindola@gmail.com>2013-07-26 22:32:58 +0000
committerRafael Espindola <rafael.espindola@gmail.com>2013-07-26 22:32:58 +0000
commitc1bb2d432501dabdfcb1e78eccfb7377664c4d14 (patch)
tree42e3584774cbe9c50693b8509b5bd292e644b590 /docs/CommandGuide
parente7e612f22fb3993b490827bf341196def60d8871 (diff)
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Use pipefail when available.
This change makes test with RUN lines like RUN: opt ... | FileCheck fail if opt fails, even if it prints what FileCheck wants. Enabling this found some interesting cases of broken tests that were not being noticed because opt (or some other tool) was crashing late. Pipefail is used when the shell supports it or when using the internal python based tester. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187261 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/CommandGuide')
-rw-r--r--docs/CommandGuide/lit.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/CommandGuide/lit.rst b/docs/CommandGuide/lit.rst
index 2f6d9a1556..a4681fb34c 100644
--- a/docs/CommandGuide/lit.rst
+++ b/docs/CommandGuide/lit.rst
@@ -316,6 +316,10 @@ executed, two important global variables are predefined:
*on_clone* function will generally modify), and (3) the test path to the new
directory being scanned.
+ **pipefail** Normally a test using a shell pipe fails if any of the commands
+ on the pipe fail. If this is not desired, setting this variable to false
+ makes the test fail only if the last command in the pipe fails.
+
TEST DISCOVERY
~~~~~~~~~~~~~~