diff options
| author | Pierre Carrier <pierre@spotify.com> | 2012-05-29 15:07:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 16:22:33 -0700 |
| commit | 7c20342230ff370c397fc4a9c4c1e7a91964bb66 (patch) | |
| tree | e9ccb5eaee5bcd4578f7ea30311f2c3830815b9c /lib | |
| parent | 5536805292e64393f57054de66578f17eb1ea994 (diff) | |
| download | lwn-7c20342230ff370c397fc4a9c4c1e7a91964bb66.tar.gz lwn-7c20342230ff370c397fc4a9c4c1e7a91964bb66.zip | |
lib/vsprintf.c: "%#o",0 becomes '0' instead of '00'
number()'s behaviour is slighly changed: 0 becomes "0" instead of "00"
when using the flag SPECIAL and base 8.
Before:
Number\Format %o %#o %x %#x
0 0 00 0 0x0
1 1 01 1 0x1
16 20 020 10 0x10
After:
Number\Format %o %#o %x %#x
0 0 0 0 0x0
1 1 01 1 0x1
16 20 020 10 0x10
Signed-off-by: Pierre Carrier <pierre@spotify.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/vsprintf.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index f5dfe0ca34f6..5391299c1e78 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -284,6 +284,7 @@ char *number(char *buf, char *end, unsigned long long num, char locase; int need_pfx = ((spec.flags & SPECIAL) && spec.base != 10); int i; + bool is_zero = num == 0LL; /* locase = 0 or 0x20. ORing digits or letters with 'locase' * produces same digits or (maybe lowercased) letters */ @@ -305,8 +306,9 @@ char *number(char *buf, char *end, unsigned long long num, } } if (need_pfx) { - spec.field_width--; if (spec.base == 16) + spec.field_width -= 2; + else if (!is_zero) spec.field_width--; } @@ -353,9 +355,11 @@ char *number(char *buf, char *end, unsigned long long num, } /* "0x" / "0" prefix */ if (need_pfx) { - if (buf < end) - *buf = '0'; - ++buf; + if (spec.base == 16 || !is_zero) { + if (buf < end) + *buf = '0'; + ++buf; + } if (spec.base == 16) { if (buf < end) *buf = ('X' | locase); |