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author | Thiago Macieira <thiago.macieira@intel.com> | 2019-10-13 21:15:14 -0700 |
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committer | Thiago Macieira <thiago.macieira@intel.com> | 2019-11-18 01:41:43 -0700 |
commit | 8e8b50b06165903a6d0e3d08737e67be47d5ec3b (patch) | |
tree | 44c457abf72f00ac6696866b5a4d46155faba647 /src | |
parent | 360df2cf74410b05d1cab0192f2d0ff5a39db59e (diff) |
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 <edward.welbourne@qt.io>
Diffstat (limited to 'src')
-rw-r--r-- | src/corelib/tools/qsimd.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
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:"); |