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Commit ffc722a3 authored by Michal Gorny's avatar Michal Gorny
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[llvm] [FileCheck] Use FILECHECK_DUMP_INPUT_ON_FAILURE only when non-empty 

Enable dumping output only if FILECHECK_DUMP_INPUT_ON_FAILURE is set to
a non-empty value.  This is necessary to support disabling it via
POSIX-compliant env(1) that does not support '-u' argument,
and therefore fix regression caused by r366980.

Differential Revision: https://reviews.llvm.org/D65334

llvm-svn: 367122
parent 91e8eac7
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