Fix mips build with GCC 9.

This patch fixes the build for MIPS (o32) with GCC 9 by stopping MIPS
__longjmp from using strong_alias, instead defining the alias
manually, so that the intended effect of not copying the nomips16
attribute is achieved, as explained in the included comment.

Tested with build-many-glibcs.py compilers build for mips64-linux-gnu
(which includes glibc builds for all three ABIs).

	* sysdeps/mips/__longjmp.c (__longjmp): Define alias manually with
	alias attribute, not with strong_alias.

1 files changed, 3 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index c7ddb7f33c..01d9c7226e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2018-11-13  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/mips/__longjmp.c (__longjmp): Define alias manually with
+	alias attribute, not with strong_alias.
+
 	* include/libc-symbols.h [SHARED && !NO_HIDDEN && !__ASSEMBLER__]
 	(__hidden_ver2): New macro.  Use old definition of __hidden_ver1
 	with additional parameter thread.