blob: f4aafc531ac0e9957ce9ea95cb351050017eb86b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/* { dg-do compile } */
/* { dg-options "-Wdouble-promotion -ftrack-macro-expansion=2" } */
#include <stddef.h>
/* Some targets do not provide <complex.h> so we define I ourselves. */
#define I 1.0iF
#define ID ((_Complex double)I)
float f;
double d;
int i;
long double ld;
_Complex float cf;
_Complex double cd;
_Complex long double cld;
size_t s;
extern void varargs_fn (int, ...);
extern void double_fn (double);
extern float float_fn (void);
void
usual_arithmetic_conversions(void)
{
float local_f;
_Complex float local_cf;
/* Values of type "float" are implicitly converted to "double" or
"long double" due to use in arithmetic with "double" or "long
double" operands. */
local_f = f + 1.0; /* { dg-warning "15:implicit" } */
local_f = f - d; /* { dg-warning "15:implicit" } */
local_f = 1.0f * 1.0; /* { dg-warning "18:implicit" } */
local_f = 1.0f / d; /* { dg-warning "18:implicit" } */
local_cf = cf + 1.0; /* { dg-warning "17:implicit" } */
local_cf = cf - d; /* { dg-warning "17:implicit" } */
local_cf = cf + 1.0 * ID; /* { dg-warning "17:implicit" } */
local_cf = cf - cd; /* { dg-warning "17:implicit" } */
local_f = i ? f : d; /* { dg-warning "15:implicit" } */
i = f == d; /* { dg-warning "9:implicit" } */
i = d != f; /* { dg-warning "9:implicit" } */
}
void
default_argument_promotion (void)
{
/* Because "f" is part of the variable argument list, it is promoted
to "double". */
varargs_fn (1, f); /* { dg-warning "implicit" } */
}
/* There is no warning when an explicit cast is used to perform the
conversion. */
void
casts (void)
{
float local_f;
_Complex float local_cf;
local_f = (double)f + 1.0; /* { dg-bogus "implicit" } */
local_f = (double)f - d; /* { dg-bogus "implicit" } */
local_f = (double)1.0f + 1.0; /* { dg-bogus "implicit" } */
local_f = (double)1.0f - d; /* { dg-bogus "implicit" } */
local_cf = (_Complex double)cf + 1.0; /* { dg-bogus "implicit" } */
local_cf = (_Complex double)cf - d; /* { dg-bogus "implicit" } */
local_cf = (_Complex double)cf + 1.0 * ID; /* { dg-bogus "implicit" } */
local_cf = (_Complex double)cf - cd; /* { dg-bogus "implicit" } */
local_f = i ? (double)f : d; /* { dg-bogus "implicit" } */
i = (double)f == d; /* { dg-bogus "implicit" } */
i = d != (double)f; /* { dg-bogus "implicit" } */
}
/* There is no warning on conversions that occur in assignment (and
assignment-like) contexts. */
void
assignments (void)
{
d = f; /* { dg-bogus "implicit" } */
double_fn (f); /* { dg-bogus "implicit" } */
d = float_fn (); /* { dg-bogus "implicit" } */
}
/* There is no warning in non-evaluated contexts. */
void
non_evaluated (void)
{
s = sizeof (f + 1.0); /* { dg-bogus "implicit" } */
s = __alignof__ (f + 1.0); /* { dg-bogus "implicit" } */
d = (__typeof__(f + 1.0))f; /* { dg-bogus "implicit" } */
s = sizeof (i ? f : d); /* { dg-bogus "implicit" } */
}
|
