[Issue 8902] Unexpected "duplicate union initialization for X" error
http://d.puremagic.com/issues/show_bug.cgi?id=8902 Walter Bright changed: What|Removed |Added Status|NEW |RESOLVED CC||bugzi...@digitalmars.com Resolution||FIXED -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 8902] Unexpected "duplicate union initialization for X" error
http://d.puremagic.com/issues/show_bug.cgi?id=8902 --- Comment #5 from github-bugzi...@puremagic.com 2013-03-05 08:23:20 PST --- Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/840d88a6e539e9817cffdc4abe8ad6357897d54a fix Issue 8902 - Unexpected "duplicate union initialization for X" error https://github.com/D-Programming-Language/dmd/commit/a975ed6aacd7e2604808a74fb509da99c10624ef Merge pull request #1369 from 9rnsr/fix8902 Issue 8902 - Unexpected "duplicate union initialization for X" error -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 8902] Unexpected "duplicate union initialization for X" error
http://d.puremagic.com/issues/show_bug.cgi?id=8902 --- Comment #4 from github-bugzi...@puremagic.com 2012-12-13 04:57:44 PST --- Commits pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/1c54f33603b00163c4736696f2e24587e024327d fixup for Issue 8902 After default initialization, only the first one in overlapped fields is readable in CTFE. https://github.com/D-Programming-Language/phobos/commit/437f15689dae803510321185f3545479dee7c473 Merge pull request #1007 from 9rnsr/fix8902 fixup for Issue 8902 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 8902] Unexpected "duplicate union initialization for X" error
http://d.puremagic.com/issues/show_bug.cgi?id=8902 --- Comment #3 from github-bugzi...@puremagic.com 2012-12-12 07:41:20 PST --- Commit pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/44310012fea6751561a852cc5ef4056a0ba9d272 Add note about Issue 8902 workaround * Issue 8902 URL: http://d.puremagic.com/issues/show_bug.cgi?id=8902 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 8902] Unexpected "duplicate union initialization for X" error
http://d.puremagic.com/issues/show_bug.cgi?id=8902
--- Comment #2 from Denis Shelomovskij 2012-10-28
12:12:11 MSK ---
(In reply to comment #1)
> (In reply to comment #0)
> It would further more appear that the compiler has trouble detecting this in
> conditional implementations, which makes it difficult to bypass this problem.
Possible this is related to an error gagging problem. E.g. consider this:
---
union U { int a, b; }
template t(T)
{ static T t = T.init; } // Error: duplicate union initialization for b
static if (__traits(compiles, t!U)) { }
---
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[Issue 8902] Unexpected "duplicate union initialization for X" error
http://d.puremagic.com/issues/show_bug.cgi?id=8902
monarchdo...@gmail.com changed:
What|Removed |Added
CC||monarchdo...@gmail.com
Severity|normal |major
--- Comment #1 from monarchdo...@gmail.com 2012-10-28 01:06:44 PDT ---
(In reply to comment #0)
> Should assigning `.init` to a union be allowed or disallowed? At leas current
> behavior is inconsistent:
>
> ---
> union U { int a, b; }
>
> enum U u0 = U.init; // No errors
> U u1;// No errors
> U u2 = U.init; // Error: duplicate union initialization for b
>
> void main()
> {
> U u3 = U.init;// No errors
> immutable U u4 = U.init; // No errors
> immutable static U u5 = U.init; // Error: duplicate union...
> static U u6 = u4; // Error: duplicate union...
> static U u7 = U.init; // Error: duplicate union...
> }
> ---
It would further more appear that the compiler has trouble detecting this in
conditional implementations, which makes it difficult to bypass this problem.
//
import std.stdio;
union U { int a, b; }
void main()
{
static if (is(typeof((inout int _dummy=0){static U i = U.init;}))) //FINE
{
static U i = U.init; //L9: DERP
}
}
//
main.d(9): Error: duplicate union initialization for b
//
Raising priority due to the impossibility to easily bypass this problem...
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