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-rw-r--r--var/spack/repos/builtin/packages/valgrind/package.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/var/spack/repos/builtin/packages/valgrind/package.py b/var/spack/repos/builtin/packages/valgrind/package.py
index fc36453d1a..d989899a73 100644
--- a/var/spack/repos/builtin/packages/valgrind/package.py
+++ b/var/spack/repos/builtin/packages/valgrind/package.py
@@ -40,7 +40,7 @@ class Valgrind(AutotoolsPackage, SourcewarePackage):
description='Activates boost support for valgrind')
variant('only64bit', default=True,
description='Sets --enable-only64bit option for valgrind')
- variant('ubsan', default=sys.platform != 'darwin',
+ variant('ubsan', default=False,
description='Activates ubsan support for valgrind')
conflicts('+ubsan', when='%apple-clang',