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689 |
jeremybenn |
/* { dg-do compile } */
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/* { dg-options "-Wdouble-promotion" } */
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#include <stddef.h>
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/* Some targets do not provide <complex.h> so we define I ourselves. */
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#define I 1.0iF
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#define ID ((_Complex double)I)
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float f;
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double d;
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int i;
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long double ld;
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_Complex float cf;
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_Complex double cd;
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_Complex long double cld;
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size_t s;
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extern void unprototyped_fn ();
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extern void varargs_fn (int, ...);
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extern void double_fn (double);
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extern float float_fn (void);
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void
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usual_arithmetic_conversions(void)
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{
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float local_f;
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_Complex float local_cf;
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/* Values of type "float" are implicitly converted to "double" or
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"long double" due to use in arithmetic with "double" or "long
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double" operands. */
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local_f = f + 1.0; /* { dg-warning "implicit" } */
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local_f = f - d; /* { dg-warning "implicit" } */
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local_f = 1.0f * 1.0; /* { dg-warning "implicit" } */
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local_f = 1.0f / d; /* { dg-warning "implicit" } */
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local_cf = cf + 1.0; /* { dg-warning "implicit" } */
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local_cf = cf - d; /* { dg-warning "implicit" } */
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local_cf = cf + 1.0 * ID; /* { dg-warning "implicit" } */
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local_cf = cf - cd; /* { dg-warning "implicit" } */
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local_f = i ? f : d; /* { dg-warning "implicit" } */
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i = f == d; /* { dg-warning "implicit" } */
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i = d != f; /* { dg-warning "implicit" } */
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}
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void
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default_argument_promotion (void)
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{
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/* Because there is no prototype, "f" is promoted to "double". */
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unprototyped_fn (f); /* { dg-warning "implicit" } */
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undeclared_fn (f); /* { dg-warning "implicit" } */
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/* Because "f" is part of the variable argument list, it is promoted
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to "double". */
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varargs_fn (1, f); /* { dg-warning "implicit" } */
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}
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/* There is no warning when an explicit cast is used to perform the
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conversion. */
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void
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casts (void)
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{
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float local_f;
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_Complex float local_cf;
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local_f = (double)f + 1.0; /* { dg-bogus "implicit" } */
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local_f = (double)f - d; /* { dg-bogus "implicit" } */
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local_f = (double)1.0f + 1.0; /* { dg-bogus "implicit" } */
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local_f = (double)1.0f - d; /* { dg-bogus "implicit" } */
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local_cf = (_Complex double)cf + 1.0; /* { dg-bogus "implicit" } */
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local_cf = (_Complex double)cf - d; /* { dg-bogus "implicit" } */
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local_cf = (_Complex double)cf + 1.0 * ID; /* { dg-bogus "implicit" } */
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local_cf = (_Complex double)cf - cd; /* { dg-bogus "implicit" } */
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local_f = i ? (double)f : d; /* { dg-bogus "implicit" } */
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i = (double)f == d; /* { dg-bogus "implicit" } */
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i = d != (double)f; /* { dg-bogus "implicit" } */
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}
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/* There is no warning on conversions that occur in assignment (and
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assignment-like) contexts. */
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void
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assignments (void)
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{
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d = f; /* { dg-bogus "implicit" } */
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double_fn (f); /* { dg-bogus "implicit" } */
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d = float_fn (); /* { dg-bogus "implicit" } */
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}
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/* There is no warning in non-evaluated contexts. */
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void
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non_evaluated (void)
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{
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s = sizeof (f + 1.0); /* { dg-bogus "implicit" } */
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s = __alignof__ (f + 1.0); /* { dg-bogus "implicit" } */
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d = (__typeof__(f + 1.0))f; /* { dg-bogus "implicit" } */
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s = sizeof (i ? f : d); /* { dg-bogus "implicit" } */
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s = sizeof (unprototyped_fn (f)); /* { dg-bogus "implicit" } */
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}
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