Update.

2003-04-05  Roland McGrath  <roland@redhat.com>

	* sysdeps/unix/sysv/linux/i386/setcontext.S: Rewrite to avoid writing
	below the stack pointer even if switching to the same context we are
	running right now.

	* catgets/gencat.c (read_input_file): Make sure that \n is not
	alone on the line before testing for continuation.

	* math/test-tgmath.c (compile_test): Initialize c.

3 files changed, 31 insertions, 35 deletions

diff --git a/ChangeLog b/ChangeLog
index 49adac1..90c7c3d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,15 @@
+2003-04-05  Roland McGrath  <roland@redhat.com>
+
+	* sysdeps/unix/sysv/linux/i386/setcontext.S: Rewrite to avoid writing
+	below the stack pointer even if switching to the same context we are
+	running right now.
+
 2003-04-05  Ulrich Drepper  <drepper@redhat.com>
 
-	* math/test-tgmath.c (F): Initialize c.
+	* catgets/gencat.c (read_input_file): Make sure that \n is not
+	alone on the line before testing for continuation.
+
+	* math/test-tgmath.c (compile_test): Initialize c.
 
 2003-04-05  Alexandre Oliva  <aoliva@redhat.com>
 
diff --git a/catgets/gencat.c b/catgets/gencat.c
index 175f1ff..18bf3bb 100644
--- a/catgets/gencat.c
+++ b/catgets/gencat.c
@@ -333,7 +333,7 @@ read_input_file (struct catalog *current, const char *fname)
 	      /* There might be more than one backslash at the end of
 		 the line.  Only if there is an odd number of them is
 		 the line continued.  */
-	      if (buf[act_len - 1] == '\\')
+	      if (act_len > 0 && buf[act_len - 1] == '\\')
 		{
 		  int temp_act_len = act_len;
 
diff --git a/sysdeps/unix/sysv/linux/i386/setcontext.S b/sysdeps/unix/sysv/linux/i386/setcontext.S
index cbe9f08..ebed2ce 100644
--- a/sysdeps/unix/sysv/linux/i386/setcontext.S
+++ b/sysdeps/unix/sysv/linux/i386/setcontext.S
@@ -1,5 +1,5 @@
 /* Install given context.
-   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
 
@@ -53,39 +53,26 @@ ENTRY(__setcontext)
 	movl	oFS(%eax), %ecx
 	movw	%cx, %fs
 
+	/* Fetch the address to return to.  */
+	movl	oEIP(%eax), %ecx
+
 	/* Load the new stack pointer.  */
-	movl	oESP(%eax), %ecx
-	/* Make room for 8 registers and the return address.  We will load
-	   the values from the stack.  */
-	subl	$36, %ecx
-
-	/* Move the values of all the 32-bit registers (except ESP) on
-	   the stack.  This happens in the form the 'popa' instruction
-	   expects it.  Before this block put the address of the code
-	   to execute.  */
-	movl	oEDI(%eax), %ebx
-	movl	oESI(%eax), %edx
-	movl	oEBP(%eax), %esi
-	movl	oEBX(%eax), %edi
-	movl	%ebx, (%ecx)
-	movl	%edx, 4(%ecx)
-	movl	%esi, 8(%ecx)
-	movl	%edi, 16(%ecx)
-	movl	oEDX(%eax), %ebx
-	movl	oECX(%eax), %edx
-	movl	oEAX(%eax), %esi
-	movl	oEIP(%eax), %edi
-	movl	%ebx, 20(%ecx)
-	movl	%edx, 24(%ecx)
-	movl	%esi, 28(%ecx)
-	movl	%edi, 32(%ecx)
-
-	/* Set the new stack address.  The stack points now to the block
-	   we put the register content in.  */
-	movl	%ecx, %esp
-	/* Restore the register content.  */
-	popa
-	/* The following 'ret' will pop the addres of the code and jump
+	movl	oESP(%eax), %esp
+
+	/* Push the return address on the new stack so we can return there.  */
+	pushl	%ecx
+
+	/* Load the values of all the 32-bit registers (except ESP).
+	   Since we are loading from EAX, it must be last.  */
+	movl	oEDI(%eax), %edi
+	movl	oESI(%eax), %esi
+	movl	oEBP(%eax), %ebp
+	movl	oEBX(%eax), %ebx
+	movl	oEDX(%eax), %edx
+	movl	oECX(%eax), %ecx
+	movl	oEAX(%eax), %eax
+
+	/* The following 'ret' will pop the address of the code and jump
 	   to it.  */
 
 L(pseudo_end):