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author | Ondrej Bilka <neleai@seznam.cz> | 2013-05-24 08:34:10 +0200 |
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committer | Ondrej Bilka <neleai@seznam.cz> | 2013-05-24 08:34:10 +0200 |
commit | bae143d2702e5ca1265c55b06072afba01bfc07a (patch) | |
tree | 6c46604eb6e68b48cc0b767d37bfc0034867d0bf /libio/genops.c | |
parent | Add BZ # to ChangeLog for commit 9323d39baea2fb0cca3735136abe263eff405133 (diff) | |
download | glibc-bae143d2702e5ca1265c55b06072afba01bfc07a.tar.gz glibc-bae143d2702e5ca1265c55b06072afba01bfc07a.tar.bz2 glibc-bae143d2702e5ca1265c55b06072afba01bfc07a.zip |
Initialize wide struct info.
Fixes 15381.
Using wide character function is on byte oriented memstream is undefined
behaviour. This behaviour was masked by not initializing wide struct
info. We now initialize it to cause a predictable crash.
Diffstat (limited to 'libio/genops.c')
-rw-r--r-- | libio/genops.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libio/genops.c b/libio/genops.c index 390d8d24b5..e5c5d5cafe 100644 --- a/libio/genops.c +++ b/libio/genops.c @@ -661,6 +661,10 @@ _IO_no_init (fp, flags, orientation, wd, jmp) fp->_wide_data->_wide_vtable = jmp; } + else + /* Cause predictable crash when a wide function is called on a byte + stream. */ + fp->_wide_data = (struct _IO_wide_data *) -1L; #endif fp->_freeres_list = NULL; } |