benlangmuir added inline comments.

================
Comment at: clang/test/Driver/SOURCE_DATE_EPOCH.c:2
+// RUN: %clang -E %s -### 2>&1 | FileCheck %s -check-prefix=NO_EPOCH
+// NO_EPOCH-NOT: "-source-date-epoch"
+
----------------
tstellar wrote:
> Hi @benlangmuir, this test fails in our build environment, because we have 
> the SOURCE_DATE_EPOCH env variable set globally.  Is there any way to update 
> the test to handle this scenario?
I'm not aware of a portable way to unset environment variables (`env -u` 
doesn't work on some of our platforms) and this first check is low-value 
anyway, so I'm fine with just dropping it and only having the ones below that 
explicitly set a value.  https://reviews.llvm.org/D142511


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D136717/new/

https://reviews.llvm.org/D136717

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