From fa7438a0ff4033e4741c807394a9af6207940d71 Mon Sep 17 00:00:00 2001 From: Joerg Sonnenberger <joerg@bec.de> Date: Tue, 5 Sep 2017 18:12:19 +0200 Subject: [PATCH] Do something sensible for empty strings to make fuzzers happy. --- libarchive/archive_read_support_format_xar.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/libarchive/archive_read_support_format_xar.c b/libarchive/archive_read_support_format_xar.c index 7a22beb9d..93eeacc5e 100644 --- a/libarchive/archive_read_support_format_xar.c +++ b/libarchive/archive_read_support_format_xar.c @@ -1040,6 +1040,9 @@ atol10(const char *p, size_t char_cnt) uint64_t l; int digit; + if (char_cnt == 0) + return (0); + l = 0; digit = *p - '0'; while (digit >= 0 && digit < 10 && char_cnt-- > 0) { @@ -1054,7 +1057,10 @@ atol8(const char *p, size_t char_cnt) { int64_t l; int digit; - + + if (char_cnt == 0) + return (0); + l = 0; while (char_cnt-- > 0) { if (*p >= '0' && *p <= '7')