Permalink
Reply
On Wednesday, 9 August 2023 at 11:48:41 UTC, Adam D Ruppe wrote:
>$ cat gdcbug.d
class ArsdExceptionBase : object.Exception {
package this(string operation, string file = FILE, size_t line = LINE, Throwable next = null) {
super(operation, file, line, next);
}
}
template ArsdException(alias Type, DataTuple...) {
static if(DataTuple.length)
alias Parent = ArsdException!(Type, DataTuple[0 .. $-1]);
else
alias Parent = ArsdExceptionBase;
class ArsdException : Parent {
DataTuple data;
this(DataTuple data, string file = __FILE__, size_t line = __LINE__) {
this.data = data;
static if(is(Parent == ArsdExceptionBase))
super(null, file, line);
else
super(data[0 .. $-1], file, line);
}
static opCall(R...)(R r, string file = __FILE__, size_t line = __LINE__) {
return new ArsdException!(Type, DataTuple, R)(r, file, line);
}
}
}
/// This example shows how you can throw and catch the ad-hoc exception types.
void main() {
// 0 or 1 args works
try {
throw ArsdException!"Test"(1);
} catch(ArsdException!"Test" e) { // catch it without them
}
// 2 or more args causes ice
try {
throw ArsdException!"Test"(4, "four");
} catch(ArsdException!("Test", int, string) e) { // catch it and use info by specifying types
assert(e.data[0] == 4); // and extract arguments like this
assert(e.data[1] == "four");
}
}
Can you raise a bug report against gcc.gnu.org/bugzilla?
Only affects gdc-12.x - there's still time to fix before 12.4 is released.
==> gcc-9/gdc
arsd.d:19:38: error: constructor arsd.ArsdExceptionBase.this is not accessible from module arsd
19 | super(null, file, line);
| ^
==> gcc-10//gdc
arsd.d:19:38: error: constructor arsd.ArsdExceptionBase.this is not accessible from module arsd
19 | super(null, file, line);
| ^
==> gcc-11//gdc
arsd.d:34:43: error: template arsd.ArsdException!"Test".ArsdException.opCall cannot deduce function from argument types !()(int), candidates are:
34 | throw ArsdException!"Test"(1);
| ^
==> gcc-12/gdc
arsd.d: In function ‘D main’:
arsd.d:40:23: internal compiler error: in layout_aggregate_type, at d/types.cc:574
40 | throw ArsdException!"Test"(4, "four");
| ^
0x7d507f layout_aggregate_type
../../gcc/d/types.cc:574
...
==> gcc-13/gdc
OK!
==> gcc-mainline/gdc
OK!