diff options
Diffstat (limited to 'shell/ash.c')
| -rw-r--r-- | shell/ash.c | 49 |
1 files changed, 24 insertions, 25 deletions
diff --git a/shell/ash.c b/shell/ash.c index 8d1822847..005d87ecf 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -6071,26 +6071,6 @@ static struct ifsregion *ifslastp; static struct arglist exparg; /* - * Our own itoa(). - * cvtnum() is used even if math support is off (to prepare $? values and such). - */ -static int -cvtnum(arith_t num) -{ - int len; - - /* 32-bit and wider ints require buffer size of bytes*3 (or less) */ - len = sizeof(arith_t) * 3; - /* If narrower: worst case, 1-byte ints: need 5 bytes: "-127<NUL>" */ - if (sizeof(arith_t) < 4) len += 2; - - expdest = makestrspace(len, expdest); - len = fmtstr(expdest, len, ARITH_FMT, num); - STADJUST(len, expdest); - return len; -} - -/* * Break the argument string into pieces based upon IFS and add the * strings to the argument list. The regions of the string to be * searched for IFS characters have been stored by recordregion. @@ -6347,16 +6327,18 @@ preglob(const char *pattern, int flag) /* * Put a string on the stack. */ -static void +static size_t memtodest(const char *p, size_t len, int flags) { int syntax = flags & EXP_QUOTED ? DQSYNTAX : BASESYNTAX; char *q; + char *s; if (!len) - return; + return 0; q = makestrspace(len * 2, expdest); + s = q; do { unsigned char c = *p++; @@ -6375,6 +6357,7 @@ memtodest(const char *p, size_t len, int flags) } while (--len); expdest = q; + return q - s; } static size_t @@ -6386,6 +6369,22 @@ strtodest(const char *p, int flags) } /* + * Our own itoa(). + * cvtnum() is used even if math support is off (to prepare $? values and such). + */ +static int +cvtnum(arith_t num, int flags) +{ + /* 32-bit and wider ints require buffer size of bytes*3 (or less) */ + /* If narrower: worst case, 1-byte ints: need 5 bytes: "-127<NUL>" */ + int len = (sizeof(arith_t) >= 4) ? sizeof(arith_t) * 3 : sizeof(arith_t) * 3 + 2; + char buf[len]; + + len = fmtstr(buf, len, ARITH_FMT, num); + return memtodest(buf, len, flags); +} + +/* * Record the fact that we have to scan this region of the * string for IFS characters. */ @@ -6683,7 +6682,7 @@ expari(int flag) if (flag & QUOTES_ESC) rmescapes(p + 1, 0, NULL); - len = cvtnum(ash_arith(p + 1)); + len = cvtnum(ash_arith(p + 1), flag); if (!(flag & EXP_QUOTED)) recordregion(begoff, begoff + len, 0); @@ -7328,7 +7327,7 @@ varvalue(char *name, int varflags, int flags, int quoted) if (num == 0) return -1; numvar: - len = cvtnum(num); + len = cvtnum(num, flags); goto check_1char_name; case '-': expdest = makestrspace(NOPTS, expdest); @@ -7494,7 +7493,7 @@ evalvar(char *p, int flag) varunset(p, var, 0, 0); if (subtype == VSLENGTH) { - cvtnum(varlen > 0 ? varlen : 0); + cvtnum(varlen > 0 ? varlen : 0, flag); goto record; } |