From 046cac61c19e5d9c6262feb4de8df99e0a3b8248 Mon Sep 17 00:00:00 2001 From: Kostya Serebryany Date: Thu, 31 Jan 2019 06:52:55 +0000 Subject: [PATCH] [libFuzzer] replace slow std::mt19937 with a much faster std::minstd_rand llvm-svn: 352732 --- compiler-rt/lib/fuzzer/FuzzerRandom.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/compiler-rt/lib/fuzzer/FuzzerRandom.h b/compiler-rt/lib/fuzzer/FuzzerRandom.h index f475797..4dde7d8 100644 --- a/compiler-rt/lib/fuzzer/FuzzerRandom.h +++ b/compiler-rt/lib/fuzzer/FuzzerRandom.h @@ -14,10 +14,10 @@ #include namespace fuzzer { -class Random : public std::mt19937 { +class Random : public std::minstd_rand { public: - Random(unsigned int seed) : std::mt19937(seed) {} - result_type operator()() { return this->std::mt19937::operator()(); } + Random(unsigned int seed) : std::minstd_rand(seed) {} + result_type operator()() { return this->std::minstd_rand::operator()(); } size_t Rand() { return this->operator()(); } size_t RandBool() { return Rand() % 2; } size_t operator()(size_t n) { return n ? Rand() % n : 0; } -- 2.7.4