diff --git a/gcc/rtl.h b/gcc/rtl.h
index aa7171b6998..7469539553f 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -509,8 +509,8 @@ extern char *note_insn_name[];
 /* Define a macro to look for REG_INC notes,
    but save time on machines where they never exist.  */
 
-#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
-     || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
+/* Don't continue this line--convex cc version 4.1 would lose.  */
+#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
 #define FIND_REG_INC_NOTE(insn, reg) (find_reg_note ((insn), REG_INC, (reg)))
 #else
 #define FIND_REG_INC_NOTE(insn, reg) 0
@@ -519,8 +519,8 @@ extern char *note_insn_name[];
 /* Indicate whether the machine has any sort of auto increment addressing.
    If not, we can avoid checking for REG_INC notes.  */
 
-#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) \
-     || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
+/* Don't continue this line--convex cc version 4.1 would lose.  */
+#if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
 #define AUTO_INC_DEC
 #endif