[PATCH] lib: Improve _parse_integer_fixup_radix base 16 detection

Michal Simek michal.simek at xilinx.com
Fri Feb 7 13:07:26 CET 2020


Base autodetection is failing for this case:
if test 257 -gt 3ae; then echo first; else echo second; fi

It is because base for 3ae is recognized by _parse_integer_fixup_radix() as
10. The patch is checking all chars to make sure that they are not 'a' or
up. If they are base needs to be in hex.

Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 lib/strto.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/lib/strto.c b/lib/strto.c
index 55ff9f7437d5..14821c87f16d 100644
--- a/lib/strto.c
+++ b/lib/strto.c
@@ -22,9 +22,25 @@ static const char *_parse_integer_fixup_radix(const char *s, unsigned int *base)
 				*base = 16;
 			else
 				*base = 8;
-		} else
+		} else {
+			int i;
+
 			*base = 10;
+
+			for (i = 0; ; i++) {
+				char var = s[i];
+
+				if (var == '\n')
+					break;
+
+				if (var >= 'a') {
+					*base = 16;
+					break;
+				}
+			}
+		}
 	}
+
 	if (*base == 16 && s[0] == '0' && tolower(s[1]) == 'x')
 		s += 2;
 	return s;
-- 
2.25.0



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