[Issue 11528] New: appender: crash with -inline -O

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https://d.puremagic.com/issues/show_bug.cgi?id=11528

           Summary: appender: crash with -inline -O
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: r.sagitario at gmx.de


--- Comment #0 from Rainer Schuetze <r.sagitario at gmx.de> 2013-11-16 08:29:39 PST ---
This program is tweaked to cause a crash when building for Win32:

import std.array;

void main()
{
    auto arr = appender!string();
    asm { mov EBX,-1; }
    arr.put("1");
}

>dmd -inline -O -g test.d
>test
object.Error: Integer Divide by Zero
----------------
0x004222B6 in _ULDIV
0x00404D2A in stdarrayAppender at m:\s\d\rainers\phobos\std\array.d(2453)
0x004234C0 in memset
0x0040F76E in _d_newitemT
0x00405AC0 in stdarrayAppender at m:\s\d\rainers\phobos\std\array.d(2339)
0x0040E5F8 in rtdmain2_d_run_mainrunAll__lambda1
0x0040E5CB in rtdmain2_d_run_mainrunAll
0x0040E4E1 in _d_run_main
0x0040CD90 in main at M:\s\d\rainers\bugs\rs165\test.d(3)
0x75EC850D in BaseThreadInitThunk
0x77DDBF39 in RtlInitializeExceptionChain
0x77DDBF0C in RtlInitializeExceptionChain

This is caused by the bsr intrinsic having undefined behaviour for 0 (i.e. the
previous value of the destination register is preserved).

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