December 20, 2011 [Issue 7143] New: [CTFE] cannot compare class references with "is" | ||||
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http://d.puremagic.com/issues/show_bug.cgi?id=7143 Summary: [CTFE] cannot compare class references with "is" Product: D Version: D2 Platform: Other OS/Version: Windows Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: nobody@puremagic.com ReportedBy: r.sagitario@gmx.de --- Comment #0 from Rainer Schuetze <r.sagitario@gmx.de> 2011-12-20 06:58:20 PST --- Comparing class references with null or other classes causes an error in CTFE, e.g.: module test; class C { int x; } int getA() { C c = new C; if(c is null) return -1; return c.x; } static assert(getA() == 0); Compiling with "dmd -c test.d" yields: test.d(11): Error: cannot compare C(0) at compile time test.d(16): called from here: getA() test.d(16): while evaluating: static assert(getA() == 0) if you use "if(c)" instead of "if(c is null)", the error itself disappears, there is only the call stack left: test.d(16): called from here: getA() test.d(16): while evaluating: static assert(getA() == 0) Using "if(!c)" seems to work. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
December 21, 2011 [Issue 7143] [CTFE] cannot compare class references with "is" | ||||
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Posted in reply to Rainer Schuetze | http://d.puremagic.com/issues/show_bug.cgi?id=7143 Walter Bright <bugzilla@digitalmars.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |bugzilla@digitalmars.com Resolution| |FIXED --- Comment #1 from Walter Bright <bugzilla@digitalmars.com> 2011-12-21 15:24:10 PST --- https://github.com/D-Programming-Language/dmd/commit/767708299a408b4a234ee9ad4f45b0e6e0c21e6d https://github.com/D-Programming-Language/dmd/commit/13195c39ae3e3788c559d8e88d3203371e43f029 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
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