Fix sequence point problem.

diff --git a/assemble.c b/assemble.c
index ff308f6..b8eac2c 100644 (file)
--- a/assemble.c
+++ b/assemble.c
@@ -1390,14 +1390,15 @@ static ea *process_ea (operand *input, ea *output, int addrbits, int rfield,
                    return NULL;
 
                if (s!=1 && i!=-1) return NULL;/* no can do, in 16-bit EA */
-               if (b==-1 && i!=-1) b ^= i ^= b ^= i;   /* swap them round */
+               if (b==-1 && i!=-1) { int tmp = b; b = i; i = tmp; } /* swap */
                if ((b==R_SI || b==R_DI) && i!=-1)
-                   b ^= i ^= b ^= i; /* have BX/BP as base, SI/DI index */
+                 { int tmp = b; b = i; i = tmp; }
+                                     /* have BX/BP as base, SI/DI index */
                if (b==i) return NULL;/* shouldn't ever happen, in theory */
                if (i!=-1 && b!=-1 &&
                    (i==R_BP || i==R_BX || b==R_SI || b==R_DI))
                    return NULL;      /* invalid combinations */
-               if (b==-1)             /* pure offset: handled above */
+               if (b==-1)            /* pure offset: handled above */
                    return NULL;      /* so if it gets to here, panic! */
 
                rm = -1;