toolchain/musl/patches/028-fix-printf-regression-with-alt-form-octal-zero-flag-and-field-width.patch

   1 From 78897b0dc00b7cd5c29af5e0b7eebf2396d8dce0 Mon Sep 17 00:00:00 2001
   2 From: Rich Felker <dalias@aerifal.cx>
   3 Date: Fri, 16 Sep 2016 17:40:08 -0400
   4 Subject: fix printf regression with alt-form octal, zero flag, and field width
   5
   6 commit b91cdbe2bc8b626aa04dc6e3e84345accf34e4b1, in fixing another
   7 issue, changed the logic for how alt-form octal adds the leading zero
   8 to adjust the precision rather than using a prefix character. this
   9 wrongly suppressed the zero flag by mimicing an explicit precision
  10 given by the format string. switch back to using a prefix character.
  11
  12 based on bug report and patch by Dmitry V. Levin, but simplified.
  13 ---
  14  src/stdio/vfprintf.c | 2 +-
  15  1 file changed, 1 insertion(+), 1 deletion(-)
  16
  17 diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c
  18 index 2ecf769..e439a07 100644
  19 --- a/src/stdio/vfprintf.c
  20 +++ b/src/stdio/vfprintf.c
  21 @@ -570,7 +570,7 @@ static int printf_core(FILE *f, const char *fmt, va_list *ap, union arg *nl_arg,
  22                         if (0) {
  23                 case 'o':
  24                         a = fmt_o(arg.i, z);
  25 -                       if ((fl&ALT_FORM) && p<z-a+1) p=z-a+1;
  26 +                       if ((fl&ALT_FORM) && p<z-a+1) prefix+=5, pl=1;
  27                         } if (0) {
  28                 case 'd': case 'i':
  29                         pl=1;
  30 --
  31 cgit v0.11.2