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-rw-r--r--qpdf/test_driver.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/qpdf/test_driver.cc b/qpdf/test_driver.cc
index 239464ce..48017908 100644
--- a/qpdf/test_driver.cc
+++ b/qpdf/test_driver.cc
@@ -1188,7 +1188,7 @@ void runtest(int n, char const* filename1, char const* arg2)
bool is_binary = false;
for (size_t i = 0; i < data.size(); ++i)
{
- if (data[i] < 0)
+ if ((data[i] < 0) || (data[i] > 126))
{
is_binary = true;
break;