From 8e8b50b06165903a6d0e3d08737e67be47d5ec3b Mon Sep 17 00:00:00 2001 From: Thiago Macieira Date: Sun, 13 Oct 2019 21:15:14 -0700 Subject: RDRAND test: also disable if RDRAND produced only three samples It's unlikely, since we do 64-bit RDRAND on 64-bit machines. Change-Id: I8d95fbaf90e842b9b44dfffd15cd684a98a7ff50 Reviewed-by: Edward Welbourne --- src/corelib/tools/qsimd.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src') diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp index d7c1d8c4a9..75c380ee8a 100644 --- a/src/corelib/tools/qsimd.cpp +++ b/src/corelib/tools/qsimd.cpp @@ -685,7 +685,7 @@ static QT_FUNCTION_TARGET(RDRND) Q_DECL_COLD_FUNCTION bool checkRdrndWorks() noe // Check the results for equality if (testBuffer[0] == testBuffer[1] && testBuffer[0] == testBuffer[2] - && end == testBuffer + TestBufferSize && testBuffer[0] == testBuffer[3]) { + && (end < testBuffer + TestBufferSize || testBuffer[0] == testBuffer[3])) { fprintf(stderr, "WARNING: CPU random generator seem to be failing, " "disabling hardware random number generation\n" "WARNING: RDRND generated:"); -- cgit v1.2.3