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-rw-r--r--lib/cmdline.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/cmdline.c b/lib/cmdline.c
index fbb9981a04a4..ca89846ee0bb 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -45,6 +45,9 @@ static int get_range(char **str, int *pint, int n)
* 1 - int found, no subsequent comma
* 2 - int found including a subsequent comma
* 3 - hyphen found to denote a range
+ *
+ * Leading hyphen without integer is no integer case, but we consume it
+ * for the sake of simplification.
*/
int get_option(char **str, int *pint)
@@ -53,7 +56,10 @@ int get_option(char **str, int *pint)
if (!cur || !(*cur))
return 0;
- *pint = simple_strtol(cur, str, 0);
+ if (*cur == '-')
+ *pint = -simple_strtoull(++cur, str, 0);
+ else
+ *pint = simple_strtoull(cur, str, 0);
if (cur == *str)
return 0;
if (**str == ',') {