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| author | Rich Felker <dalias@aerifal.cx> | 2014-11-15 12:16:19 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-11-15 12:16:19 -0500 |
| commit | b91cdbe2bc8b626aa04dc6e3e84345accf34e4b1 (patch) | |
| tree | c99c9119aceee45a9d88f2a4f0a90cf50942270c /src/stdio | |
| parent | ec4318943a26d4bd4050481d11709853184f2794 (diff) | |
| download | musl-b91cdbe2bc8b626aa04dc6e3e84345accf34e4b1.tar.gz musl-b91cdbe2bc8b626aa04dc6e3e84345accf34e4b1.tar.xz musl-b91cdbe2bc8b626aa04dc6e3e84345accf34e4b1.zip | |
fix behavior of printf with alt-form octal, zero precision, zero value
in this case there are two conflicting rules in play: that an explicit precision of zero with the value zero produces no output, and that the '#' modifier for octal increases the precision sufficiently to yield a leading zero. ISO C (7.19.6.1 paragraph 6 in C99+TC3) includes a parenthetical remark to clarify that the precision-increasing behavior takes precedence, but the corresponding text in POSIX off of which I based the implementation is missing this remark. this issue was covered in WG14 DR#151.
Diffstat (limited to 'src/stdio')
| -rw-r--r-- | src/stdio/vfprintf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c index ea257720..39c1e867 100644 --- a/src/stdio/vfprintf.c +++ b/src/stdio/vfprintf.c @@ -570,7 +570,7 @@ static int printf_core(FILE *f, const char *fmt, va_list *ap, union arg *nl_arg, if (0) { case 'o': a = fmt_o(arg.i, z); - if ((fl&ALT_FORM) && arg.i) prefix+=5, pl=1; + if ((fl&ALT_FORM) && p<z-a+1) p=z-a+1; } if (0) { case 'd': case 'i': pl=1; |