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| author | Joseph Myers <joseph@codesourcery.com> | 2014-11-12 22:39:36 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2014-11-12 22:39:36 +0000 |
| commit | c4eae75271734f820a7477dbce33f8752af6f003 (patch) | |
| tree | c909cac6bbda2c97e0003221ecd656cc668deb11 /libio | |
| parent | 01cad84e1996a6f20bf19609d0554c73f2ee33d5 (diff) | |
| download | glibc-c4eae75271734f820a7477dbce33f8752af6f003.tar.gz glibc-c4eae75271734f820a7477dbce33f8752af6f003.tar.xz glibc-c4eae75271734f820a7477dbce33f8752af6f003.zip | |
Fix __get_nprocs fgets_unlocked namespace (bug 17582).
__get_nprocs is called from malloc code, but calls fgets_unlocked, which is not an ISO C or POSIX function. This patch fixes it to call a new __fgets_unlocked name instead. Note: there are various other uses of fgets_unlocked in glibc's libraries, and I haven't yet investigated which others might also be problematic (called directly or indirectly from standard functions) and so need to change to use __fgets_unlocked. Tested for x86_64 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #17582] * libio/iofgets.c [weak_alias && !_IO_MTSAFE_IO] (__fgets_unlocked): Add alias of _IO_fgets. Use libc_hidden_def. * libio/iofgets_u.c (fgets_unlocked): Rename to __fgets_unlocked and define as weak alias of __fgets_unlocked. Use libc_hidden_weak. (__fgets_unlocked): Use libc_hidden_def. * include/stdio.h (__fgets_unlocked): Declare. Use libc_hidden_proto. * sysdeps/unix/sysv/linux/getsysstats.c (phys_pages_info): Use __fgets_unlocked instead of fgets_unlocked. * sysdeps/unix/sysv/linux/alpha/getsysstats.c (GET_NPROCS_CONF_PARSER): Likewise. * sysdeps/unix/sysv/linux/sparc/getsysstats.c (GET_NPROCS_CONF_PARSER): Likewise.
Diffstat (limited to 'libio')
| -rw-r--r-- | libio/iofgets.c | 2 | ||||
| -rw-r--r-- | libio/iofgets_u.c | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/libio/iofgets.c b/libio/iofgets.c index 1b708cad0d..e352d091f1 100644 --- a/libio/iofgets.c +++ b/libio/iofgets.c @@ -73,6 +73,8 @@ _IO_fgets (buf, n, fp) weak_alias (_IO_fgets, fgets) # ifndef _IO_MTSAFE_IO +strong_alias (_IO_fgets, __fgets_unlocked) +libc_hidden_def (__fgets_unlocked) weak_alias (_IO_fgets, fgets_unlocked) libc_hidden_weak (fgets_unlocked) # endif diff --git a/libio/iofgets_u.c b/libio/iofgets_u.c index b2d4d8fe2b..d338ee0ad3 100644 --- a/libio/iofgets_u.c +++ b/libio/iofgets_u.c @@ -28,7 +28,7 @@ #include <stdio.h> char * -fgets_unlocked (buf, n, fp) +__fgets_unlocked (buf, n, fp) char *buf; int n; _IO_FILE *fp; @@ -66,4 +66,6 @@ fgets_unlocked (buf, n, fp) fp->_IO_file_flags |= old_error; return result; } -libc_hidden_def (fgets_unlocked) +libc_hidden_def (__fgets_unlocked) +weak_alias (__fgets_unlocked, fgets_unlocked) +libc_hidden_weak (fgets_unlocked) |