diff options
| -rw-r--r-- | shell/math.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/shell/math.c b/shell/math.c index eaf4f2453..0c806ad39 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; |