[FileCheck] Fix redundant diagnostics due to numeric errors

Fixed substitution printing not to produce an empty diagnostic for
errors handled elsewhere.

Reviewed By: thopre

Differential Revision: https://reviews.llvm.org/D98088

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/FileCheck/FileCheck.cpp b/llvm/lib/FileCheck/FileCheck.cpp
index 2b596fd..bcf828d 100644
--- a/llvm/lib/FileCheck/FileCheck.cpp
+++ b/llvm/lib/FileCheck/FileCheck.cpp
@@ -1362,6 +1362,8 @@ void Pattern::printSubstitutions(const SourceMgr &SM, StringRef Buffer,
               OS << " ";
               E.log(OS);
             });
+        if (!OS.tell())
+          continue;
       } else {
         // Substitution succeeded. Print substituted value.
         OS << "with \"";