[Issue 893] New: The profile flag no longer seems to work on Linux x86 64

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=893

           Summary: The profile flag no longer seems to work on Linux x86 64
           Product: D
           Version: 1.003
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: kevinbealer at gmail.com


The -profile flag no longer works for me.  I am compiling under 64 bit linux on
a dual core machine (the binaries are 32 bit of course).  This is broken on 1.0
and 1.003 at least.

If I look at it in gdb, I see this as the crash point.
0x0804a365 in _D6object6Object5opCmpMFC6ObjectZi ()

The insns at this point (I replace the mangled name from each line with
"function" to make it easier to read, look for the line marked with <<<.

Dump of assembler code for function _D6object6Object5opCmpMFC6ObjectZi:
0x0804a344 <function+0>:      push   %ebp
0x0804a345 <function+1>:      mov    %esp,%ebp
0x0804a347 <function+3>:      sub    $0xc,%esp
0x0804a34a <function+6>:      push   %ebx
0x0804a34b <function+7>:      push   %esi
0x0804a34c <function+8>:      mov    %eax,0xfffffff8(%ebp)
0x0804a34f <function+11>:     mov    $0x805e790,%ecx
0x0804a354 <function+16>:     push   %ecx
0x0804a355 <function+17>:     call   0x80555e8 <_d_newclass>
0x0804a35a <function+22>:     add    $0x4,%esp
0x0804a35d <function+25>:     mov    %eax,0xfffffffc(%ebp)
0x0804a360 <function+28>:     push   $0x1
0x0804a362 <function+30>:     mov    0xfffffff8(%ebp),%edx
0x0804a365 <function+33>: <<< mov    (%edx),%ebx
0x0804a367 <function+35>:     mov    (%ebx),%esi
0x0804a369 <function+37>:     pushl  0x14(%esi)
0x0804a36c <function+40>:     pushl  0x10(%esi)
0x0804a36f <function+43>:     pushl  0x805afd6
0x0804a375 <function+49>:     pushl  0x805afd2
0x0804a37b <function+55>:     call   0x80561c4 <_d_arraycat>
0x0804a380 <function+60>:     add    $0x14,%esp
0x0804a383 <function+63>:     push   %edx
0x0804a384 <function+64>:     push   %eax
0x0804a385 <function+65>:     mov    0xfffffffc(%ebp),%eax
0x0804a388 <function+68>:     call   0x804b404
<_D6object5Error5_ctorMFAaZC6object5Error>
0x0804a38d <function+73>:     push   %eax
0x0804a38e <function+74>:     call   0x8057f5c <_d_throw at 4>
0x0804a393 <function+79>:     pop    %esi
0x0804a394 <function+80>:     pop    %ebx
0x0804a395 <function+81>:     mov    %ebp,%esp
0x0804a397 <function+83>:     pop    %ebp
0x0804a398 <function+84>:     ret    $0x4
0x0804a39b <function+87>:     nop
End of assembler dump.

(gdb) info reg
eax            0x556e4fe0       1433292768
ecx            0x0      0
edx            0x18     24
ebx            0x1      1
esp            0xffffd0fc       0xffffd0fc
ebp            0xffffd114       0xffffd114
esi            0x1      1
edi            0x1      1
eip            0x804a365        0x804a365
<_D6object6Object5opCmpMFC6ObjectZi+33>
eflags         0x10296  66198
cs             0x23     35
ss             0x2b     43
ds             0x2b     43
es             0x2b     43
fs             0x0      0
gs             0x63     99

Just for completeness:

//hello.d
import std.stdio;

int main(char[][] x)
{
    writefln("hello.");
    return 0;
}

$ dmd -ofhello hello.d
$ ./hello
hello.
$ dmd -ofhello hello.d -profile
$ ./hello
Segmentation fault


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