strftime.c: remove recursive-assignments

* strftime.c (FMT, FMTV): remove recursive-assignments to get rid
  of undefined behavior.  [ruby-core:74532] [Bug #12213]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54248 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-03-24 13:38:20 +00:00
Родитель 743f2bf879
Коммит 20215f0181
2 изменённых файлов: 12 добавлений и 2 удалений

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@ -1,3 +1,13 @@
Thu Mar 24 22:38:18 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* strftime.c (FMT, FMTV): remove recursive-assignments to get rid
of undefined behavior. [ruby-core:74532] [Bug #12213]
Thu Mar 24 22:38:05 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* strftime.c (FMT, FMTV): remove recursive-assignments to get rid
of undefined behavior. [ruby-core:74532] [Bug #12213]
Thu Mar 24 17:44:02 2016 Nobuyoshi Nakada <nobu@ruby-lang.org>
* strftime.c (FMT_PADDING): extract format for padding.

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@ -287,7 +287,7 @@ rb_strftime_with_timespec(VALUE ftime, const char *format, size_t format_len,
(precision <= 0) ? (precision = (def_prec)) : (precision))
#define FMT(def_pad, def_prec, fmt, val) \
do { \
precision = FMT_PRECISION(def_prec); \
FMT_PRECISION(def_prec); \
len = s - start; \
NEEDS(precision); \
rb_str_set_len(ftime, len); \
@ -324,7 +324,7 @@ rb_strftime_with_timespec(VALUE ftime, const char *format, size_t format_len,
} \
else { \
const char *fmts = FMT_PADDING(fmt, def_pad); \
precision = FMT_PRECISION(def_prec); \
FMT_PRECISION(def_prec); \
tmp = format_value(fmts, tmp, precision); \
rb_str_append(ftime, tmp); \
RSTRING_GETMEM(ftime, s, len); \