diff --git a/c67-gen.c b/c67-gen.c
index f2baea5..6d9068a 100644
--- a/c67-gen.c
+++ b/c67-gen.c
@@ -1901,8 +1901,6 @@ void gfunc_call(int nb_args)
     for (i = 0; i < nb_args; i++) {
 	if ((vtop->type.t & VT_BTYPE) == VT_STRUCT) {
 	    ALWAYS_ASSERT(FALSE);
-	} else if ((vtop->type.t & VT_BTYPE) == VT_STRUCT) {
-	    ALWAYS_ASSERT(FALSE);
 	} else {
 	    /* simple type (currently always same size) */
 	    /* XXX: implicit cast ? */
diff --git a/tccgen.c b/tccgen.c
index 2f5b366..d8e4614 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -162,7 +162,6 @@ ST_FUNC Sym *sym_push2(Sym **ps, int v, int t, long c)
                 tcc_error("incompatible types for redefinition of '%s'",
                           get_tok_str(v, NULL));
     }
-    s = *ps;
     s = sym_malloc();
     s->asm_label = NULL;
     s->v = v;
diff --git a/tccpp.c b/tccpp.c
index e1ccded..b12b120 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -276,7 +276,7 @@ ST_FUNC char *get_tok_str(int v, CValue *cv)
 #ifdef _WIN32
         sprintf(p, "%u", (unsigned)cv->ull);
 #else
-        sprintf(p, "%Lu", cv->ull);
+        sprintf(p, "%llu", cv->ull);
 #endif
         break;
     case TOK_LCHAR:
diff --git a/x86_64-gen.c b/x86_64-gen.c
index 407bd96..fc4178e 100644
--- a/x86_64-gen.c
+++ b/x86_64-gen.c
@@ -501,7 +501,7 @@ void load(int r, SValue *sv)
                     o(0xc0 + REG_VALUE(v) + REG_VALUE(r)*8);
                 }
             } else if (r == TREG_ST0) {
-                assert((v >= TREG_XMM0) || (v <= TREG_XMM7));
+                assert((v >= TREG_XMM0) && (v <= TREG_XMM7));
                 /* gen_cvt_ftof(VT_LDOUBLE); */
                 /* movsd %xmmN,-0x10(%rsp) */
                 o(0x110ff2);