dmd crash help
Don
nospam at nospam.com
Thu Feb 4 01:05:55 PST 2010
Don wrote:
> strtr wrote:
>> strtr Wrote:
>>
>>> dmd(1.048/55/56) crashed on me:
>>> AppName: dmd.exe AppVer: 0.0.0.0 ModName: unknown
>>> ModVer: 0.0.0.0 Offset: 00000002
>>> There is a lot of crash data but I do not know where to start looking.
>>> I've also tried finding which part of the code is responsible, but I
>>> haven't found it yet.
>>
>> Everything is working again and I have found this piece of code which
>> chokes the compiler.
>>
>> module main;
>>
>> //Digital Mars D Compiler v1.056
>> //bud_win_3.04.exe -full -cleanup
>>
>> enum ENUM
>> {
>> N0 = 1, //N0 = x; crashes for some values of x, ie. 1 and 10. and
>> not for others ie. 3.
>> N1,
>> N2,
>> N3,
>> N4,
>> N5,
>> N6,
>> N7,
>> N8,
>> N9,
>> N10,
>> N11,
>> N12,
>> N13,
>> N14, N15, N16,
>> N17,
>> N18
>> }
>>
>> const char[][ ENUM.max + 1 ] ENUM_NAME = [
>> ENUM.N0 : "N0",
>> ];
>>
>> void main()
>> {
>> char[] text = `Hi`;
>>
>> switch(text)
>> {
>> //case `N0`: //this works
>> case ENUM_NAME[ENUM.N0]: //this doesn't
>> //return ENUM.N0;
>> default:
>> break;
>> }
>> }
>>
>> I will post it together with my previous reported enum
>> incomprehensibility bug if it can't be further minimized.
>
> Excellent! I can reproduce it.
> The D2 version of this code (char[] text = `Hi`.dup;) segfaults in
> Expression::arraySyntaxCopy() in expression.c, with evidence of memory
> corruption. The D1 version does *not* segfault there. In fact the code
> compiles with the debug version of DMD1!
> I think the array literal isn't getting initialized properly.
>
And it's a regression, introduced in DMD1.046. It worked in 1.045.
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