diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dafb655bdcf..75ca6748f53 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+Tue Jun  9 14:31:19 1998  Nick Clifton  <nickc@cygnus.com>
+
+	* config/v850/t-v850 (TCFLAGS): Add assembler options to warn of
+	overlfows. 
+
+	* config/v850/lib1funcs.asm (__return_interrupt): Use 'addi
+	16,sp,sp' ratehr than 'add 16,sp'.  Patch courtesy of Biomedin
+	<glctr@abc.it>.
+
 Tue Jun  9 16:23:13 EDT 1998  Andrew MacLeod  <amacleod@cygnus.com>
 
 	* except.c (expand_start_catch): Rename to start_catch_handler.
diff --git a/gcc/config/v850/lib1funcs.asm b/gcc/config/v850/lib1funcs.asm
index 15135a9ed2a..2787e97519a 100644
--- a/gcc/config/v850/lib1funcs.asm
+++ b/gcc/config/v850/lib1funcs.asm
@@ -1182,7 +1182,7 @@ __return_interrupt:
 	ld.w	4[sp],gp
 	ld.w	8[sp],r1
 	ld.w	12[sp],r10
-	add	16,sp
+	addi	16,sp,sp
 	reti
 	.size	__return_interrupt,.-__return_interrupt
 #endif /* L_save_interrupt */
diff --git a/gcc/config/v850/t-v850 b/gcc/config/v850/t-v850
index d1d9b16f1b6..12af46b5037 100644
--- a/gcc/config/v850/t-v850
+++ b/gcc/config/v850/t-v850
@@ -50,3 +50,5 @@ fp-bit.c: $(srcdir)/config/fp-bit.c
 	echo '#define FLOAT_BIT_ORDER_MISMATCH' >>fp-bit.c
 	echo '#endif' 		>> fp-bit.c
 	cat $(srcdir)/config/fp-bit.c >> fp-bit.c
+
+TCFLAGS = -Wa,-mwarn-signed-overflow -Wa,-mwarn-unsigned-overflow