diff --git a/VAX/vax_cis.c b/VAX/vax_cis.c
index 3b9a450a..473a44b8 100644
--- a/VAX/vax_cis.c
+++ b/VAX/vax_cis.c
@@ -463,6 +463,7 @@ switch (opc) {                                          /* case on opcode */
     case ADDP4: case SUBP4:
         op[4] = op[2];                                  /* copy dst */
         op[5] = op[3];
+        /* fall through */
     case ADDP6: case SUBP6:
         if ((PSL & PSL_FPD) || (op[0] > 31) ||
             (op[2] > 31) || (op[4] > 31))
@@ -632,6 +633,7 @@ switch (opc) {                                          /* case on opcode */
     case CMPP3:
         op[3] = op[2];                                  /* reposition ops */
         op[2] = op[0];
+        /* fall through */
     case CMPP4:
         if ((PSL & PSL_FPD) || (op[0] > 31) || (op[2] > 31))
             RSVD_OPND_FAULT(CMPP);
diff --git a/VAX/vax_octa.c b/VAX/vax_octa.c
index bd71ffe8..e9255c78 100644
--- a/VAX/vax_octa.c
+++ b/VAX/vax_octa.c
@@ -1045,6 +1045,8 @@ return;
 
 void h_unpackh (int32 *hflt, UFPH *r)
 {
+int32 thflt0;
+
 r->sign = hflt[0] & FPSIGN;                             /* get sign */
 r->exp = H_GETEXP (hflt[0]);                            /* get exponent */
 if (r->exp == 0) {                                      /* exp = 0? */
@@ -1054,7 +1056,8 @@ if (r->exp == 0) {                                      /* exp = 0? */
     r->frac.f2 = r->frac.f3 = 0;
     return;
     }
-r->frac.f3 = WORDSWAP ((hflt[0] & ~(FPSIGN | H_EXP)) | H_HB);
+thflt0 = ((hflt[0] & ~(FPSIGN | H_EXP)) | H_HB);
+r->frac.f3 = WORDSWAP (thflt0);
 r->frac.f2 = WORDSWAP (hflt[1]);
 r->frac.f1 = WORDSWAP (hflt[2]);
 r->frac.f0 = WORDSWAP (hflt[3]);