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Allow more Python scalar conversions

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PR python/18352 points out that the gdb Python code can't convert an
integer-valued gdb.Value to a Python float.  While writing the test I
noticed that, similarly, converting integer gdb.Values to float does
not work.  However, all of these cases seem reasonable.

gdb/ChangeLog
2018-09-23  Tom Tromey  <tom@tromey.com>

	PR python/18352;
	* python/py-value.c (valpy_float): Allow conversions from int or
	char.
	(valpy_int, valpy_long): Allow conversions from float.

gdb/testsuite/ChangeLog
2018-09-23  Tom Tromey  <tom@tromey.com>

	PR python/18352;
	* gdb.python/py-value.exp (test_float_conversion): New proc.
	Use it.
This commit is contained in:
Tom Tromey 2018-09-14 22:31:12 -06:00
parent e6b5f1e9f5
commit fb4fa9469c
4 changed files with 48 additions and 3 deletions
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25
gdb/python/py-value.c
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@ -1497,6 +1497,12 @@ valpy_int (PyObject *self)
TRY
{
if (is_floating_value (value))
{
type = builtin_type_pylong;
value = value_cast (type, value);
}
if (!is_integral_type (type))
error (_("Cannot convert value to int."));
@ -1522,6 +1528,12 @@ valpy_long (PyObject *self)
TRY
{
if (is_floating_value (value))
{
type = builtin_type_pylong;
value = value_cast (type, value);
}
type = check_typedef (type);
if (!is_integral_type (type)
@ -1554,10 +1566,17 @@ valpy_float (PyObject *self)
{
type = check_typedef (type);
if (TYPE_CODE (type) != TYPE_CODE_FLT || !is_floating_value (value))
if (TYPE_CODE (type) == TYPE_CODE_FLT && is_floating_value (value))
d = target_float_to_host_double (value_contents (value), type);
else if (TYPE_CODE (type) == TYPE_CODE_INT)
{
/* Note that valpy_long accepts TYPE_CODE_PTR and some
others here here -- but casting a pointer or bool to a
float seems wrong. */
d = value_as_long (value);
}
else
error (_("Cannot convert value to float."));
d = target_float_to_host_double (value_contents (value), type);
}
CATCH (except, RETURN_MASK_ALL)
{