digitalmars.D.bugs - [Issue 10831] New: using typeid in CTFE in imported file adds link dependency when generating debug info
- d-bugmail puremagic.com (51/51) Aug 15 2013 http://d.puremagic.com/issues/show_bug.cgi?id=10831
- d-bugmail puremagic.com (9/10) Aug 17 2013 http://d.puremagic.com/issues/show_bug.cgi?id=10831
http://d.puremagic.com/issues/show_bug.cgi?id=10831 Summary: using typeid in CTFE in imported file adds link dependency when generating debug info Product: D Version: D2 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: nobody puremagic.com ReportedBy: r.sagitario gmx.de PDT --- Considering two modules test.d and imp.d: ////////////////////////// module test; import imp.d; void main() {} ///////////////////////// module imp; struct S { int x = 2; } static assert(typeid(S)); ///////////////////////// Compile with "dmd test.d" works fine. However building with debug information "dmd -g test.d" yields: OPTLINK (R) for Win32 Release 8.00.13 Copyright (C) Digital Mars 1989-2010 All rights reserved. http://www.digitalmars.com/ctg/optlink.html test.obj(test) Error 42: Symbol Undefined _D3imp1S6__initZ --- errorlevel 1 The same happens with type inference: ///////////////////////// module imp; struct S { int x = 2; } auto ti = typeid(S); ///////////////////////// This is caused by some operations adding TypeInfo instances to the object file that reference the static initializer of a type. This initializer is only generated with the type declaration, though. The normal link strips the COMDAT with the TypeInfo, but the debug info is not split per COMDAT, so it drags the offending symbol back in. Some more operations that implicitely use typeid and probably exhibit this behaviour when executed during CTFE aswell: - struct postblit and dtor - array.dup and idup - array.sort -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Aug 15 2013
http://d.puremagic.com/issues/show_bug.cgi?id=10831 PDT --- Actually this fails on Win64 even without debug info:dmd -m64 test.dtest.obj : error LNK2001: unresolved external symbol _D3imp1S6__initZ test.exe : fatal error LNK1120: 1 unresolved externals I guess it also fails on other platforms. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Aug 17 2013