summary refs log tree commit diff
path: root/include/errno.h
diff options
context:
space:
mode:
authorSiddhesh Poyarekar <siddhesh@redhat.com>2014-11-20 12:03:11 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2014-11-24 11:41:42 +0530
commita10178bda190a62e7e3f56773f55f23cf06848a7 (patch)
treeaec76d63ed6098f2ec59bd6a057a537ec8cd38e8 /include/errno.h
parent279bc5b3c384c09746fbadb2b68c6db9e833c064 (diff)
downloadglibc-a10178bda190a62e7e3f56773f55f23cf06848a7.tar.gz
glibc-a10178bda190a62e7e3f56773f55f23cf06848a7.tar.xz
glibc-a10178bda190a62e7e3f56773f55f23cf06848a7.zip
Remove IN_LIB
Replace with IS_IN and IS_IN_LIB macros instead.  This change results
in a change in generated code, because it fixes a subtle bug.  The bug
was introduced when systemtap probes were added to lowlevellock.h,
which resulted in stap-probe.h being included in a number of places.
stap-probe.h always defines IN_LIB, which breaks a check in errno.h
and netdb.h since they rely on that macro to decide whether to
implement an internal version of a declaration or an external one.

The components that see a code change due to this are:

iconv_prog
libmemusage.so
libpcprofile.so
libSegFault.so
libutil.so.1
locale
localedef
nscd

All other built components (i.e. libc, libpthread, etc.) remain
unchanged by this on x86_64.

	* elf/Makefile (CPPFLAGS-.os): Remove IN_LIB.
	* elf/rtld-Rules (rtld-CPPFLAGS): Likewise.
	* extra-lib.mk (CPPFLAGS-$(lib)): Likewise.
	* include/libc-symbols.h (IS_IN_LIB): New macro.
	* include/errno.h: Use IS_IN_LIB instead of IN_LIB.
	* include/netdb.h: Likewise.
	* include/stap-probe.h: Remove all uses of IN_LIB.
Diffstat (limited to 'include/errno.h')
-rw-r--r--include/errno.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/errno.h b/include/errno.h
index dbf2a61e0d..8e60288f50 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -22,7 +22,7 @@
 #  define errno rtld_errno
 extern int rtld_errno attribute_hidden;
 
-# elif !defined NOT_IN_libc || defined IN_LIB
+# elif !defined NOT_IN_libc || IS_IN_LIB
 
 #  include <tls.h>
 
@@ -34,7 +34,7 @@ extern int rtld_errno attribute_hidden;
 #  endif
 extern __thread int errno attribute_tls_model_ie;
 
-# endif	/* !NOT_IN_libc || IN_LIB */
+# endif	/* !NOT_IN_libc || IS_IN_LIB */
 
 # define __set_errno(val) (errno = (val))