printf: accept negative numbers for %x; sh: overflowed numbers are 0
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/coreutils/printf.c b/coreutils/printf.c
index 0b004ea..2beea71 100644
--- a/coreutils/printf.c
+++ b/coreutils/printf.c
@@ -78,6 +78,14 @@
static void FAST_FUNC conv_strtoull(const char *arg, void *result)
{
*(unsigned long long*)result = bb_strtoull(arg, NULL, 0);
+ /* both coreutils 6.10 and bash 3.2:
+ * $ printf '%x\n' -2
+ * fffffffffffffffe
+ * Mimic that:
+ */
+ if (errno) {
+ *(unsigned long long*)result = bb_strtoll(arg, NULL, 0);
+ }
}
static void FAST_FUNC conv_strtoll(const char *arg, void *result)
{
