diff options
Diffstat (limited to 'shell/math.c')
-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) | |||
538 | n = 0; | 538 | n = 0; |
539 | nptr = *endptr + 1; | 539 | nptr = *endptr + 1; |
540 | /* bash allows "N#" (empty "nnnn" part) */ | 540 | /* bash allows "N#" (empty "nnnn" part) */ |
541 | while (isdigit(*nptr)) { | 541 | for (;;) { |
542 | unsigned digit = (unsigned)*nptr - '0'; | ||
543 | if (digit >= 10 || digit >= base) { | ||
544 | digit = (unsigned)(*nptr | 0x20) - ('a' - 10); | ||
545 | if (digit >= base) | ||
546 | break; | ||
547 | } | ||
542 | /* bash does not check for overflows */ | 548 | /* bash does not check for overflows */ |
543 | n = n * base + (*nptr++ - '0'); | 549 | n = n * base + digit; |
550 | nptr++; | ||
544 | } | 551 | } |
545 | *endptr = (char*)nptr; | 552 | *endptr = (char*)nptr; |
546 | return n; | 553 | return n; |