diff options
Diffstat (limited to 'lib/rand-isaac.c')
| -rw-r--r-- | lib/rand-isaac.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/lib/rand-isaac.c b/lib/rand-isaac.c index c03242f6..b698ea80 100644 --- a/lib/rand-isaac.c +++ b/lib/rand-isaac.c @@ -1,6 +1,6 @@ /* Bob Jenkins's cryptographic random number generators, ISAAC and ISAAC64. - Copyright (C) 1999-2014 Free Software Foundation, Inc. + Copyright (C) 1999-2015 Free Software Foundation, Inc. Copyright (C) 1997, 1998, 1999 Colin Plumb. This program is free software: you can redistribute it and/or modify @@ -35,6 +35,18 @@ #include "rand-isaac.h" #include <limits.h> +#include <string.h> + +/* If the platform supports unaligned access, + then don't have -fsanitize=undefined warn about it. */ +#undef ATTRIBUTE_NO_WARN_SANITIZE_UNDEFINED +#if !_STRING_ARCH_unaligned \ + || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 9) +# define ATTRIBUTE_NO_WARN_SANITIZE_UNDEFINED /* empty */ +#else +# define ATTRIBUTE_NO_WARN_SANITIZE_UNDEFINED \ + __attribute__ ((__no_sanitize_undefined__)) +#endif /* The minimum of two sizes A and B. */ static inline size_t @@ -81,7 +93,7 @@ ind (isaac_word const *m, isaac_word x) } /* Use and update *S to generate random data to fill RESULT. */ -void +void ATTRIBUTE_NO_WARN_SANITIZE_UNDEFINED isaac_refill (struct isaac_state *s, isaac_word result[ISAAC_WORDS]) { /* Caches of S->a and S->b. */ @@ -96,7 +108,7 @@ isaac_refill (struct isaac_state *s, isaac_word result[ISAAC_WORDS]) /* The central step. S->m is the whole state array, while M is a pointer to the current word. OFF is the offset from M to the - word ISAAC_WORDS/2 words away in the SM array, i.e. +/- + word ISAAC_WORDS/2 words away in the SM array, i.e., +/- ISAAC_WORDS/2. A and B are state variables, and R the result. This updates A, B, M[I], and R[I]. */ #define ISAAC_STEP(i, off, mix) \ |