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Add warning 4 

num en{a1,a2,a3};
enum en ee;
ee = 0xffffffffff;
    char a;
    a = 0xffff;
master
jiang 2014-05-14 21:01:00 +08:00
parent fcb3772a34
commit 5d0785d0e1
1 changed files with 29 additions and 5 deletions
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34
tccgen.c
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@ -90,6 +90,8 @@ static void vla_runtime_type_size(CType *type, int *a);
static void vla_sp_save(void);
static int is_compatible_parameter_types(CType *type1, CType *type2);
static void expr_type(CType *type);
static int is_force;
ST_FUNC void vpush64(int ty, unsigned long long v);
ST_FUNC void vpush(CType *type);
ST_FUNC int gvtst(int inv, int t);
@ -1984,11 +1986,30 @@ static void gen_cast(CType *type)
;
#endif
else if (dbt != VT_LLONG) {
int s = 0;
if ((dbt & VT_BTYPE) == VT_BYTE)
int s, dt, warr = 0;
long long ll;
dt = dbt & VT_BTYPE;
ll = vtop->c.ll;
if (dt == VT_BYTE){
if((ll != (unsigned char)ll) && (ll != (char)ll))
warr = 1;
s = 24;
else if ((dbt & VT_BTYPE) == VT_SHORT)
}else if (dt == VT_SHORT){
if((ll != (unsigned short)ll) && (ll != (short)ll))
warr = 1;
s = 16;
}else{
if((ll != (unsigned int)ll) && (ll != (int)ll))
warr = 1;
s = 0;
}
if(warr && !is_force){
if(dt == VT_ENUM){
tcc_warning("large integer implicitly truncated to unsigned type");
dbt = VT_UNSIGNED;
}else
tcc_warning("overflow in implicit constant conversion");
}
if(dbt & VT_UNSIGNED)
vtop->c.ui = ((unsigned int)vtop->c.ll << s) >> s;
else
@ -2465,14 +2486,15 @@ static void gen_assign_cast(CType *dt)
/* store vtop in lvalue pushed on stack */
ST_FUNC void vstore(void)
{
int sbt, dbt, ft, r, t, size, align, bit_size, bit_pos, rc, delayed_cast;
int sbt, dbt, ft, cc, r, t, size, align, bit_size, bit_pos, rc, delayed_cast;
ft = vtop[-1].type.t;
sbt = vtop->type.t & VT_BTYPE;
dbt = ft & VT_BTYPE;
cc = (vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST;
if ((((sbt == VT_INT || sbt == VT_SHORT) && dbt == VT_BYTE) ||
(sbt == VT_INT && dbt == VT_SHORT))
&& !(vtop->type.t & VT_BITFIELD)) {
&& !(vtop->type.t & VT_BITFIELD) && !cc) {
/* optimize char/short casts */
delayed_cast = VT_MUSTCAST;
vtop->type.t = ft & (VT_TYPE & ~(VT_BITFIELD | (-1 << VT_STRUCT_SHIFT)));
@ -3718,7 +3740,9 @@ ST_FUNC void unary(void)
return;
}
unary();
is_force = 1;
gen_cast(&type);
is_force = 0;
}
} else if (tok == '{') {
/* save all registers */