MIPS: Avoid a dangling `vfork@GLIBC_2.0' reference

This satisfies a symbol reference created with:

	.symver	__libc_vfork, vfork@GLIBC_2.0

where `__libc_vfork' has not been defined or referenced.  In this case
the `vfork@GLIBC_2.0' reference is supposed to be discarded, however a
bug present in GAS since forever causes an undefined symbol table entry
to be created.  This in turn triggers a problem in the linker that can
manifest itself by link errors such as:

ld: libpthread.so: invalid string offset 2765592330 >= 5154 for section `.dynstr'

The GAS and linker bugs need to be resolved, but we can avoid them too
by providing a `__libc_vfork' definition just like our other platforms.

	[BZ #17485]
	* sysdeps/unix/sysv/linux/mips/vfork.S (__libc_vfork): Define.

diff --git a/ChangeLog b/ChangeLog
index 4ba13b3..589da6b 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-10-22  Maciej W. Rozycki  <macro@codesourcery.com>
+
+       [BZ #17485]
+       * sysdeps/unix/sysv/linux/mips/vfork.S (__libc_vfork): Define.
+
 2014-10-21  Joseph Myers  <joseph@codesourcery.com>
 
        [BZ #14132]

diff --git a/NEWS b/NEWS
index f3e222d..5850c4a 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -9,7 +9,8 @@ Version 2.21
 
 * The following bugs are resolved with this release:
 
-  6652, 12926, 14171, 15884, 17266, 17363, 17370, 17371, 17411, 17460.
+  6652, 12926, 14171, 15884, 17266, 17363, 17370, 17371, 17411, 17460,
+  17485.
 \f
 Version 2.20
 

diff --git a/sysdeps/unix/sysv/linux/mips/vfork.S b/sysdeps/unix/sysv/linux/mips/vfork.S
index 80c362d..2c1a747 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/vfork.S
+++ b/sysdeps/unix/sysv/linux/mips/vfork.S
@@ -108,3 +108,4 @@ L(error):
 
 libc_hidden_def(__vfork)
 weak_alias (__vfork, vfork)
+strong_alias (__vfork, __libc_vfork)