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authorDenys Vlasenko2019-09-22 18:26:05 +0200
committerDenys Vlasenko2019-09-22 18:26:05 +0200
commitca1ce4b9fa2b48f8898a51782543fe32546ba1ec (patch)
tree9bdde33fa93749361e594d32c97d615a4e813562 /shell/math.c
parentf159352112671e3c1e07356ebf6f590d8f79c8ff (diff)
downloadbusybox-ca1ce4b9fa2b48f8898a51782543fe32546ba1ec.zip
busybox-ca1ce4b9fa2b48f8898a51782543fe32546ba1ec.tar.gz
ash: fix BASE###nn bashism to accept letter 'digits' for bases > 9
function old new delta evaluate_string 873 876 +3 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell/math.c')
-rw-r--r--shell/math.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/shell/math.c b/shell/math.c
index eaf4f24..0c806ad 100644
--- a/shell/math.c
+++ b/shell/math.c
@@ -538,9 +538,16 @@ static arith_t strto_arith_t(const char *nptr, char **endptr)
n = 0;
nptr = *endptr + 1;
/* bash allows "N#" (empty "nnnn" part) */
- while (isdigit(*nptr)) {
+ for (;;) {
+ unsigned digit = (unsigned)*nptr - '0';
+ if (digit >= 10 || digit >= base) {
+ digit = (unsigned)(*nptr | 0x20) - ('a' - 10);
+ if (digit >= base)
+ break;
+ }
/* bash does not check for overflows */
- n = n * base + (*nptr++ - '0');
+ n = n * base + digit;
+ nptr++;
}
*endptr = (char*)nptr;
return n;