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authorRostislav Skudnov <rostislav@tuxera.com>2017-02-01 18:35:13 +0000
committerDenys Vlasenko <vda.linux@googlemail.com>2017-02-04 23:10:22 +0100
commit8762512fdb088acefb9f3ea5f7b1e1bf2d336ff3 (patch)
tree309e04746b4bcb6f2ad645b29f7fcecfbff339e5 /libbb
parentc31b54fd81690b3df3898437f5865674d06e6577 (diff)
downloadbusybox-8762512fdb088acefb9f3ea5f7b1e1bf2d336ff3.tar.gz
Replace int -> uint to avoid signed integer overflow
An example of such an error (should be compiled with DEBUG_SANITIZE): runtime error: left shift of 1 by 31 places cannot be represented in type 'int' Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb')
-rw-r--r--libbb/crc32.c2
-rw-r--r--libbb/getopt32.c4
-rw-r--r--libbb/pw_encrypt.c2
3 files changed, 4 insertions, 4 deletions
diff --git a/libbb/crc32.c b/libbb/crc32.c
index ac9836cc9..0711ca84e 100644
--- a/libbb/crc32.c
+++ b/libbb/crc32.c
@@ -24,7 +24,7 @@ uint32_t* FAST_FUNC crc32_filltable(uint32_t *crc_table, int endian)
{
uint32_t polynomial = endian ? 0x04c11db7 : 0xedb88320;
uint32_t c;
- int i, j;
+ unsigned i, j;
if (!crc_table)
crc_table = xmalloc(256 * sizeof(uint32_t));
diff --git a/libbb/getopt32.c b/libbb/getopt32.c
index 15b6efc09..497fc016f 100644
--- a/libbb/getopt32.c
+++ b/libbb/getopt32.c
@@ -404,7 +404,7 @@ getopt32(char **argv, const char *applet_opts, ...)
if (c >= 32)
break;
on_off->opt_char = *s;
- on_off->switch_on = (1 << c);
+ on_off->switch_on = (1U << c);
if (*++s == ':') {
on_off->optarg = va_arg(p, void **);
if (s[1] == '+' || s[1] == '*') {
@@ -454,7 +454,7 @@ getopt32(char **argv, const char *applet_opts, ...)
if (c >= 32)
break;
on_off->opt_char = l_o->val;
- on_off->switch_on = (1 << c);
+ on_off->switch_on = (1U << c);
if (l_o->has_arg != no_argument)
on_off->optarg = va_arg(p, void **);
c++;
diff --git a/libbb/pw_encrypt.c b/libbb/pw_encrypt.c
index 4cdc2de76..fe06a8fe6 100644
--- a/libbb/pw_encrypt.c
+++ b/libbb/pw_encrypt.c
@@ -30,7 +30,7 @@ static int i64c(int i)
int FAST_FUNC crypt_make_salt(char *p, int cnt /*, int x */)
{
/* was: x += ... */
- int x = getpid() + monotonic_us();
+ unsigned x = getpid() + monotonic_us();
do {
/* x = (x*1664525 + 1013904223) % 2^32 generator is lame
* (low-order bit is not "random", etc...),