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merge-script 5c0cd205a1 Merge bitcoin/bitcoin#29625: Several randomness improvements ... ce8094246e random: replace construct/assign with explicit Reseed() (Pieter Wuille) 2ae392d561 random: use LogError for init failure (Pieter Wuille) 97e16f5704 tests: make fuzz tests (mostly) deterministic with fixed seed (Pieter Wuille) 2c91330dd6 random: cleanup order, comments, static (Pieter Wuille) 8e31cf9c9b net, net_processing: use existing RNG objects more (Pieter Wuille) d5fcbe966b random: improve precision of MakeExponentiallyDistributed (Pieter Wuille) cfb0dfe2cf random: convert GetExponentialRand into rand_exp_duration (Pieter Wuille) 4eaa239dc3 random: convert GetRand{Micros,Millis} into randrange (Pieter Wuille) 82de1b80d9 net: use GetRandMicros for cache expiration (Pieter Wuille) ddc184d999 random: get rid of GetRand by inlining (Pieter Wuille) e2d1f84858 random: make GetRand() support entire range (incl. max) (Pieter Wuille) 810cdf6b4e tests: overhaul deterministic test randomness (Pieter Wuille) 6cfdc5b104 random: convert XoRoShiRo128PlusPlus into full RNG (Pieter Wuille) 8cc2f45065 random: move XoRoShiRo128PlusPlus into random module (Pieter Wuille) 8f5ac0d0b6 xoroshiro128plusplus: drop comment about nonexisting copy() (Pieter Wuille) 8924f5120f random: modernize XoRoShiRo128PlusPlus a bit (Pieter Wuille) ddb7d26cfd random: add RandomMixin::randbits with compile-known bits (Pieter Wuille) 21ce9d8658 random: Improve RandomMixin::randbits (Pieter Wuille) 9b14d3d2da random: refactor: move rand* utilities to RandomMixin (Pieter Wuille) 40dd86fc3b random: use BasicByte concept in randbytes (Pieter Wuille) 27cefc7fd6 random: add a few noexcepts to FastRandomContext (Pieter Wuille) b3b382dde2 random: move rand256() and randbytes() to .h file (Pieter Wuille) 493a2e024e random: write rand256() in function of fillrand() (Pieter Wuille) Pull request description: This PR contains a number of vaguely-related improvements to the random module. The specific changes and more detailed rationale is in the commit messages, but the highlights are: * `XoRoShiRo128PlusPlus` (previously a test-only RNG) moves to random.h and becomes `InsecureRandomContext`, which is even faster than `FastRandomContext` but non-cryptographic. It also gets all helper randomness functions (`randrange`, `fillrand`, ...), making it a lot more succinct to use. * During tests, **all** randomness is made deterministic (except for `GetStrongRandBytes`) but non-repeating (like `GetRand()` used to be when `g_mock_deterministic_tests` was used), either fixed, or from a random seed (overridden by env var). * Several infrequently used top-level functions (`GetRandMillis`, `GetRandMicros`, `GetExponentialRand`) are converted into member functions of `FastRandomContext` (and `InsecureRandomContext`). * `GetRand<T>()` (without argument) can now return the maximum value of the type (previously e.g. `GetRand<uint32_t>()` would never return 0xffffffff). ACKs for top commit: achow101: ACK ce8094246e maflcko: re-ACK ce8094246e 🐈 hodlinator: ACK ce8094246e dergoegge: utACK ce8094246e Tree-SHA512: 79bc0cbafaf27e95012c1ce2947a8ca6f9a3c78af5f1f16e69354b6fc9b987a28858adf4cd356dc5baf21163e9af8dcc24e70f8d7173be870e8a3ddcdd47c02c		4 months ago
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lsan	…
tsan	doc, test: Document steps to reproduce TSan warning for `libdb`	2 years ago
ubsan	Merge bitcoin/bitcoin#29625: Several randomness improvements	4 months ago