Rewrite and hide longjmperror.

This shouldn't be public API, isn't supported on x86/x86_64, and it's
unlikely anyone would have actually seen the message before anyway.
Using __libc_fatal makes it much more likely to be seen.

Bug: 11156955
Change-Id: Icf7f654b22a7dacd89668b60c11e5705c7215c08

4 files changed, 4 insertions, 60 deletions

diff --git a/libc/Android.mk b/libc/Android.mk
index ee8981a..08c9ddd 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -270,7 +270,6 @@ libc_upstream_netbsd_src_files := \
     upstream-netbsd/lib/libc/gen/nice.c \
     upstream-netbsd/lib/libc/gen/popen.c \
     upstream-netbsd/lib/libc/gen/psignal.c \
-    upstream-netbsd/lib/libc/gen/setjmperr.c \
     upstream-netbsd/lib/libc/gen/utime.c \
     upstream-netbsd/lib/libc/gen/utmp.c \
     upstream-netbsd/lib/libc/isc/ev_streams.c \
diff --git a/libc/bionic/assert.cpp b/libc/bionic/assert.cpp
index ba67143..985fc38 100644
--- a/libc/bionic/assert.cpp
+++ b/libc/bionic/assert.cpp
@@ -34,10 +34,12 @@
 
 void __assert(const char* file, int line, const char* failed_expression) {
   __libc_fatal("%s:%d: assertion \"%s\" failed", file, line, failed_expression);
-  /* NOTREACHED */
 }
 
 void __assert2(const char* file, int line, const char* function, const char* failed_expression) {
   __libc_fatal("%s:%d: %s: assertion \"%s\" failed", file, line, function, failed_expression);
-  /* NOTREACHED */
+}
+
+extern "C" __LIBC_HIDDEN__ void longjmperror() {
+  __libc_fatal("longjmp botch");
 }
diff --git a/libc/include/setjmp.h b/libc/include/setjmp.h
index 68fdcef..02b06f5 100644
--- a/libc/include/setjmp.h
+++ b/libc/include/setjmp.h
@@ -50,7 +50,6 @@ __BEGIN_DECLS
 
 int     _setjmp(jmp_buf);
 void    _longjmp(jmp_buf, int);
-void    longjmperror(void);
 
 int     setjmp(jmp_buf);
 void    longjmp(jmp_buf, int);
diff --git a/libc/upstream-netbsd/lib/libc/gen/setjmperr.c b/libc/upstream-netbsd/lib/libc/gen/setjmperr.c
deleted file mode 100644
index 5b1432e..0000000
--- a/libc/upstream-netbsd/lib/libc/gen/setjmperr.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/*	$NetBSD: setjmperr.c,v 1.8 2012/06/24 15:26:03 christos Exp $	*/
-
-/*
- * Copyright (c) 1980, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#if defined(LIBC_SCCS) && !defined(lint)
-#if 0
-static char sccsid[] = "@(#)setjmperr.c	8.1 (Berkeley) 6/4/93";
-#else
-__RCSID("$NetBSD: setjmperr.c,v 1.8 2012/06/24 15:26:03 christos Exp $");
-#endif
-#endif /* LIBC_SCCS and not lint */
-
-/*
- * This routine is called from longjmp() when an error occurs.
- * Programs that wish to exit gracefully from this error may
- * write their own versions.
- * If this routine returns, the program is aborted.
- */
-
-#include <setjmp.h>
-#include <unistd.h>
-
-void
-longjmperror(void)
-{
-#define	ERRMSG	"longjmp botch.\n"
-	(void)write(STDERR_FILENO, ERRMSG, sizeof(ERRMSG) - 1);
-}