diff options
Diffstat (limited to 'usr/src/lib/libdemangle/common/util.c')
| -rw-r--r-- | usr/src/lib/libdemangle/common/util.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/usr/src/lib/libdemangle/common/util.c b/usr/src/lib/libdemangle/common/util.c index 739c554826..17eefe82d7 100644 --- a/usr/src/lib/libdemangle/common/util.c +++ b/usr/src/lib/libdemangle/common/util.c @@ -14,7 +14,8 @@ * Copyright 2019, Joyent, Inc. */ -#include <sys/debug.h> +#include <errno.h> +#include <limits.h> #include <stdlib.h> #include <string.h> #include "demangle-sys.h" @@ -42,6 +43,25 @@ zalloc(sysdem_ops_t *ops, size_t len) return (p); } +void * +xcalloc(sysdem_ops_t *ops, size_t n, size_t elsize) +{ + uint64_t sz; + + if (mul_overflow(n, elsize, &sz)) { + errno = ENOMEM; + return (NULL); + } + +#ifndef _LP64 + if (sz > SIZE_MAX) { + errno = ENOMEM; + return (NULL); + } +#endif + + return (zalloc(ops, sz)); +} void xfree(sysdem_ops_t *ops, void *p, size_t len) { |