diff options
Diffstat (limited to 'libio/freopen.c')
| -rw-r--r-- | libio/freopen.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/libio/freopen.c b/libio/freopen.c index 7ab3e69845..808d8fab58 100644 --- a/libio/freopen.c +++ b/libio/freopen.c @@ -26,8 +26,13 @@ #include "libioP.h" #include "stdio.h" +#ifdef PIC +extern void *_IO_stdin_used; +weak_extern (_IO_stdin_used); +#endif + FILE* -__new_freopen (filename, mode, fp) +freopen (filename, mode, fp) const char* filename; const char* mode; FILE* fp; @@ -38,9 +43,17 @@ __new_freopen (filename, mode, fp) return NULL; _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp); _IO_flockfile (fp); - result = _IO_freopen (filename, mode, fp); +#ifdef PIC + if (&_IO_stdin_used == NULL) + /* If the shared C library is used by the application binary which + was linked against the older version of libio, we just use the + older one even for internal use to avoid trouble since a pointer + to the old libio may be passed into shared C library and wind + up here. */ + result = _IO_old_freopen (filename, mode, fp); + else +#endif + result = _IO_freopen (filename, mode, fp); _IO_cleanup_region_end (1); return result; } - -default_symbol_version (__new_freopen, freopen, GLIBC_2.1); |