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New Message on MumbaiUserGroup
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From: nilesh_m
Message 11 in Discussion
Dear All, Have a look at the code-snippet attached for your reference. I don't think
so this is a bug. In fact you'll notice similar behaviour with Perl, Java as well.
Anyway I'm not here to debate on whether it's a bug or not. Have provided two
code-snippets along with the section of MSIL code for your reference. Cheers
Nilesh using System; class Test1
{
public static void Main()
{
int i = 0;
i = i++;
Console.WriteLine("Value of i is {0}", i);
} } /*
IL_0000: ldc.i4.0 // Push 0 (integer zero) on stack
IL_0001: stloc.0 // Pop from stock; [this assigns zero to i]
IL_0002: ldloc.0 // Push i (value) on stack; [old value required for expression
involving postfix]
IL_0003: dup // Push on stack whatever was the latest value on stack; [for
post-fix]
IL_0004: ldc.i4.1 // Push 1 (integer 1) on stack; [for post-fix]
IL_0005: add // Pop last two values from stack; add them and push result on
stack; [for post-fix]
IL_0006: stloc.0 // Pop from stock; [this assigns incremented value to i]
IL_0007: stloc.0 // Pop from stock; [this assigns result of expression to
left-hand side]
*/
using System; class Test1
{
public static void Main()
{
int i = 0;
i = i++ + i;
Console.WriteLine("Value of i is {0}", i);
} } /*
IL_0000: ldc.i4.0 // Push 0 (integer zero) on stack
IL_0001: stloc.0 // Pop from stock; [this assigns zero to i]
IL_0002: ldloc.0 // Push i (value) on stack; [old value required for expression
involving postfix]
IL_0003: dup // Push on stack whatever was the latest value on stack; [for
post-fix]
IL_0004: ldc.i4.1 // Push 1 (integer 1) on stack; [for post-fix]
IL_0005: add // Pop last two values from stack; add them and push result on
stack; [for post-fix]
IL_0006: stloc.0 // Pop from stock; [this assigns incremented value to i]
IL_0007: ldloc.0 // Push i (value) on stack as expression i++ + i
IL_0008: add // Pop last two values from stack; add them and push result on
stack;
IL_0009: stloc.0 // Pop from stock; [this assigns result of expression to
left-hand side]
*/
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http://groups.msn.com/mumbaiusergroup/_notifications.msnw?type=msg&mview=1&parent=1&item=4500
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