From 234ffbce0e17464b0c174e3567ffe34917277229 Mon Sep 17 00:00:00 2001 From: shyouhei Date: Wed, 7 Nov 2018 04:09:05 +0000 Subject: blacklist UBSAN's unsigned integer overflow Integer overflow for unsigned types are fully defined in C. They are not always problematic (but not always OK). These functions in this changeset intentionally utilizes that behaviour. Blacklist from UBSAN checks for better output. See also: https://travis-ci.org/ruby/ruby/jobs/451624829 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65589 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- random.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'random.c') diff --git a/random.c b/random.c index cd16a57b39..16f2453b69 100644 --- a/random.c +++ b/random.c @@ -112,6 +112,9 @@ struct MT { #define genrand_initialized(mt) ((mt)->next != 0) #define uninit_genrand(mt) ((mt)->next = 0) +NO_SANITIZE("unsigned-integer-overflow", static void init_genrand(struct MT *mt, unsigned int s)); +NO_SANITIZE("unsigned-integer-overflow", static void init_by_array(struct MT *mt, const uint32_t init_key[], int key_length)); + /* initializes state[N] with a seed */ static void init_genrand(struct MT *mt, unsigned int s) -- cgit v1.2.3