diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index cdc78aa3d4..c71dce4b1e 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -1580,6 +1580,7 @@ uint32_t HELPER(csst)(CPUS390XState *env, uint32_t r3, uint64_t a1, uint64_t a2)
                 cpu_stq_data_ra(env, a2 + 0, svh, ra);
                 cpu_stq_data_ra(env, a2 + 8, svl, ra);
             }
+            break;
         default:
             g_assert_not_reached();
         }
diff --git a/tcg/arm/tcg-target.inc.c b/tcg/arm/tcg-target.inc.c
index d1793ec77d..37efcf06af 100644
--- a/tcg/arm/tcg-target.inc.c
+++ b/tcg/arm/tcg-target.inc.c
@@ -1223,7 +1223,7 @@ static TCGReg tcg_out_tlb_read(TCGContext *s, TCGReg addrlo, TCGReg addrhi,
     /* Load the tlb addend.  */
     tcg_out_ld32_12(s, COND_AL, TCG_REG_R2, TCG_REG_R2, add_off);
 
-    tcg_out_dat_reg(s, (s_bits ? COND_EQ : COND_AL), ARITH_CMP, 0,
+    tcg_out_dat_reg(s, (a_bits ? COND_EQ : COND_AL), ARITH_CMP, 0,
                     TCG_REG_R0, TCG_REG_TMP, SHIFT_IMM_LSL(TARGET_PAGE_BITS));
 
     if (TARGET_LONG_BITS == 64) {
diff --git a/tcg/tcg.h b/tcg/tcg.h
index da78721a0d..17b7750ee6 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -762,7 +762,10 @@ static inline void *tcg_malloc(int size)
 {
     TCGContext *s = &tcg_ctx;
     uint8_t *ptr, *ptr_end;
-    size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
+
+    /* ??? This is a weak placeholder for minimum malloc alignment.  */
+    size = QEMU_ALIGN_UP(size, 8);
+
     ptr = s->pool_cur;
     ptr_end = ptr + size;
     if (unlikely(ptr_end > s->pool_end)) {