diff options
Diffstat (limited to 'src/lib/libc/stdlib/strtouq.c')
| -rw-r--r-- | src/lib/libc/stdlib/strtouq.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/src/lib/libc/stdlib/strtouq.c b/src/lib/libc/stdlib/strtouq.c index cc647d8d28..1f29a22f33 100644 --- a/src/lib/libc/stdlib/strtouq.c +++ b/src/lib/libc/stdlib/strtouq.c | |||
| @@ -32,14 +32,14 @@ | |||
| 32 | */ | 32 | */ |
| 33 | 33 | ||
| 34 | #if defined(LIBC_SCCS) && !defined(lint) | 34 | #if defined(LIBC_SCCS) && !defined(lint) |
| 35 | static char sccsid[] = "@(#)strtouq.c 5.1 (Berkeley) 6/26/92"; | 35 | static char rcsid[] = "$OpenBSD: strtouq.c,v 1.4 1996/08/19 08:33:53 tholo Exp $"; |
| 36 | #endif /* LIBC_SCCS and not lint */ | 36 | #endif /* LIBC_SCCS and not lint */ |
| 37 | 37 | ||
| 38 | #include <sys/types.h> | 38 | #include <sys/types.h> |
| 39 | 39 | ||
| 40 | #include <limits.h> | ||
| 41 | #include <errno.h> | ||
| 42 | #include <ctype.h> | 40 | #include <ctype.h> |
| 41 | #include <errno.h> | ||
| 42 | #include <limits.h> | ||
| 43 | #include <stdlib.h> | 43 | #include <stdlib.h> |
| 44 | 44 | ||
| 45 | /* | 45 | /* |
| @@ -54,10 +54,9 @@ strtouq(nptr, endptr, base) | |||
| 54 | char **endptr; | 54 | char **endptr; |
| 55 | register int base; | 55 | register int base; |
| 56 | { | 56 | { |
| 57 | register const char *s = nptr; | 57 | register const char *s; |
| 58 | register u_quad_t acc; | 58 | register u_quad_t acc, cutoff; |
| 59 | register int c; | 59 | register int c; |
| 60 | register u_quad_t qbase, cutoff; | ||
| 61 | register int neg, any, cutlim; | 60 | register int neg, any, cutlim; |
| 62 | 61 | ||
| 63 | /* | 62 | /* |
| @@ -65,7 +64,7 @@ strtouq(nptr, endptr, base) | |||
| 65 | */ | 64 | */ |
| 66 | s = nptr; | 65 | s = nptr; |
| 67 | do { | 66 | do { |
| 68 | c = *s++; | 67 | c = (unsigned char) *s++; |
| 69 | } while (isspace(c)); | 68 | } while (isspace(c)); |
| 70 | if (c == '-') { | 69 | if (c == '-') { |
| 71 | neg = 1; | 70 | neg = 1; |
| @@ -83,10 +82,10 @@ strtouq(nptr, endptr, base) | |||
| 83 | } | 82 | } |
| 84 | if (base == 0) | 83 | if (base == 0) |
| 85 | base = c == '0' ? 8 : 10; | 84 | base = c == '0' ? 8 : 10; |
| 86 | qbase = (unsigned)base; | 85 | |
| 87 | cutoff = (u_quad_t)UQUAD_MAX / qbase; | 86 | cutoff = UQUAD_MAX / (u_quad_t)base; |
| 88 | cutlim = (u_quad_t)UQUAD_MAX % qbase; | 87 | cutlim = UQUAD_MAX % (u_quad_t)base; |
| 89 | for (acc = 0, any = 0;; c = *s++) { | 88 | for (acc = 0, any = 0;; c = (unsigned char) *s++) { |
| 90 | if (isdigit(c)) | 89 | if (isdigit(c)) |
| 91 | c -= '0'; | 90 | c -= '0'; |
| 92 | else if (isalpha(c)) | 91 | else if (isalpha(c)) |
| @@ -95,18 +94,19 @@ strtouq(nptr, endptr, base) | |||
| 95 | break; | 94 | break; |
| 96 | if (c >= base) | 95 | if (c >= base) |
| 97 | break; | 96 | break; |
| 98 | if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim) | 97 | if (any < 0) |
| 98 | continue; | ||
| 99 | if (acc > cutoff || acc == cutoff && c > cutlim) { | ||
| 99 | any = -1; | 100 | any = -1; |
| 100 | else { | 101 | acc = UQUAD_MAX; |
| 102 | errno = ERANGE; | ||
| 103 | } else { | ||
| 101 | any = 1; | 104 | any = 1; |
| 102 | acc *= qbase; | 105 | acc *= (u_quad_t)base; |
| 103 | acc += c; | 106 | acc += c; |
| 104 | } | 107 | } |
| 105 | } | 108 | } |
| 106 | if (any < 0) { | 109 | if (neg && any > 0) |
| 107 | acc = UQUAD_MAX; | ||
| 108 | errno = ERANGE; | ||
| 109 | } else if (neg) | ||
| 110 | acc = -acc; | 110 | acc = -acc; |
| 111 | if (endptr != 0) | 111 | if (endptr != 0) |
| 112 | *endptr = (char *) (any ? s - 1 : nptr); | 112 | *endptr = (char *) (any ? s - 1 : nptr); |
