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| author | Denys Vlasenko | 2018-03-28 17:12:56 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2018-03-28 17:12:56 +0200 |
| commit | e4defe826be49b8ef19912ba4cb291bfe9166e0f (patch) | |
| tree | c22925d5ec279ce799525879edc9f21961b4764a | |
| parent | 123fdda0a4a838e61c6a7d15c69d3b438136aee0 (diff) | |
| download | busybox-e4defe826be49b8ef19912ba4cb291bfe9166e0f.zip busybox-e4defe826be49b8ef19912ba4cb291bfe9166e0f.tar.gz | |
libbb: use BUILD_BUG_ON in utoa_to_buf()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | libbb/xfuncs.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c index 43ae980..e8c027f 100644 --- a/libbb/xfuncs.c +++ b/libbb/xfuncs.c @@ -59,24 +59,23 @@ char* FAST_FUNC strncpy_IFNAMSIZ(char *dst, const char *src) * A truncated result contains the first few digits of the result ala strncpy. * Returns a pointer past last generated digit, does _not_ store NUL. */ -void BUG_sizeof(void); char* FAST_FUNC utoa_to_buf(unsigned n, char *buf, unsigned buflen) { unsigned i, out, res; if (buflen) { out = 0; + + BUILD_BUG_ON(sizeof(n) != 4 && sizeof(n) != 8); if (sizeof(n) == 4) // 2^32-1 = 4294967295 i = 1000000000; -#if UINT_MAX > 4294967295 /* prevents warning about "const too large" */ +#if UINT_MAX > 0xffffffff /* prevents warning about "const too large" */ else if (sizeof(n) == 8) // 2^64-1 = 18446744073709551615 i = 10000000000000000000; #endif - else - BUG_sizeof(); for (; i; i /= 10) { res = n / i; n = n % i; |