http://d.puremagic.com/issues/show_bug.cgi?id=5188
Summary: alias this and compare expression generates wrong code
Product: D
Version: D2
Platform: x86
OS/Version: Windows
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nob...@puremagic.com
ReportedBy: k.hara...@gmail.com
--- Comment #0 from Kenji Hara <k.hara...@gmail.com> 2010-11-08 06:17:11 PST ---
// bug.d
struct S
{
int v = 10;
alias v this;
}
void main()
{
S s;
assert(s <= 20); // fail!?
}
// use ddbg 0.11 beta
bug.d:6 void main()
00402010: c8040000 enter 0x4, 0x0
bug.d:8 S s;
00402014: a180504100 mov eax, [0x415080]
00402019: 8945fc mov [ebp-0x4], eax
bug.d:9 assert(s <= 20);
0040201c: 837dfc14 cmp dword [ebp-0x4], 0x14
00402020: b901000000 mov ecx, 0x1
00402025: 7e02 jle 0x402029 _Dmain bug.d:9 // jump to
0x402029
00402027: 31c9 xor ecx, ecx // not run
00402029: 31d2 xor edx, edx // edx = 0
0040202b: 3bca cmp ecx, edx // ecx==1,
edx==0
0040202d: 7e0a jle 0x402039 _Dmain bug.d:9 // fail
0040202f: b809000000 mov eax, 0x9 // eax = 9
00402034: e807000000 call 0x402040 bug.__assert // assert!
00402039: 31c0 xor eax, eax
bug.d:10 }
0040203b: c9 leave
0040203c: c3 ret
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