http://d.puremagic.com/issues/show_bug.cgi?id=4236

           Summary: 'out of memory' error compiling on windows
           Product: D
           Version: unspecified
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: bugzilla@digitalmars.com


--- Comment #0 from Walter Bright <bugzilla@digitalmars.com> 2010-05-26 12:31:11 PDT ---
Reported by le_afo@gmx.net:

i got an 'out of memory' error when compiling lage(r) d files
using dmd v1.061 on windows.
on freebsd/linux the same dmd version compiles the d source without problems.

interesting is that i get the same error when compiling a similar c source code using the digital mars c compiler.

anyone knows which wall i'm hitting in the dmd/dmc compiler backend ?

the source files in question are generated using the following d program
(mkdata.d) from binary blobs (e.g. zip files) :

howto reproduce :
dmd mkdata
mkdata foo.zip > data.d
dmd -c data.d

for dmc:
mkdata -cxx foo.zip > data.c
dmc -c data.c

the problem starts when foo.zip is larger than 800kb giving a 4+ mb data.d

-------------- mkdata.d ----------------------------------------------
import std.stdio;
import std.string;
import std.file;
import std.path;

static void gen_d(string name,string data)
{
    writefln("const string name_" ~ name ~ "=\"" ~ name ~ "\";");
    writef("const ubyte[] data_" ~ name ~ " = [");
    foreach(n,d;data)
        writef("0x%02x,",d);
    writefln("\n]; // end of data_" ~ name);
}

static void gen_cxx(string name,string data)
{
    writefln("#ifndef " ~ std.string.toupper(name) ~ "_h");
    writefln("#define " ~ std.string.toupper(name) ~ "_h");

    writefln("static const char* name_" ~ name ~ "=\"" ~ name ~ "\";");
    writefln("static unsigned int size_" ~ name ~ "=%d;",data.length);
    writef("static const char data_" ~ name ~ "[] = {");

    foreach(n,d;data)
    {
        if( (n % 16) == 0)
            writef("\n// %d : 0x%04x\n",n/16,n);
        writef("0x%02x,",d);
    }
    writefln("\n}; // end of data_" ~ name);
    writefln("\n#endif // " ~ std.string.toupper(name) ~ "_h");
}

int main(string[] args)
{
    bool do_cxx=false;
    uint n=0;
    foreach(arg;args[1 .. $])
    {
        if(arg == "-cxx")
        {
            do_cxx=true;
            continue;
        }

        if(n == 0 && !do_cxx) writefln("module ddata;\n");

        string name=arg;
        name=replace(name,"-","_");
        name=replace(name,".","_");

        try
        {
            char[] data=cast(char[]) std.file.read(arg);
            n++;
            string tag=format("%s%d",name,n);

            do_cxx ? gen_cxx(name,data) : gen_d(name,data);
        }
        catch(FileException ex)
        {
            writefln(arg ~ " : got FileEx: " ~ ex.msg);
            continue ; //next;
        }
    }

    return 0;
}

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