[Pnet-developers] [bugs #11417] incompatible types in assignment: no conversion from `System.String' to `char *'

[James Michael DuPont]

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 of the project: DotGNU Portable.NET.

/**************************************************************************/
[bugs #11417] Latest Modifications:

Changes by: 
                James Michael DuPont <address@hidden>
'Date: 
                Fri 12/31/2004 at 13:07 (Europe/Berlin)

------------------ Additional Follow-up Comments ----------------------------
This error occurs when compiling mono mcs,
in ./class/corlib/System/String.cs
System/String.cs:1405: incompatible types in assignment: no conversion from 
`System.String' to `char *'
System/String.cs:1409: invalid operands to binary `+'
System/String.cs:763: incompatible types in assignment: no conversion from 
`System.String' to `char *'
System/String.cs:797: incompatible types in assignment: no conversion from 
`System.String' to `char *'







/**************************************************************************/
[bugs #11417] Full Item Snapshot:

URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=11417>
Project: DotGNU Portable.NET
Submitted by: James Michael DuPont
On: Tue 12/28/2004 at 17:13

Category:  None
Severity:  5 - Average
Item Group:  None
Resolution:  None
Privacy:  Public
Assigned to:  None
Status:  Open


Summary:  incompatible types in assignment: no conversion from `System.String' 
to `char *'

Original Submission:  I dont know if this code is valid, but mono compiles it.
testcase1.cs:8: incompatible types in assignment: no conversion from 
`System.String' to `char *'

class test
{
        [NonSerialized] private char start_char;
        internal unsafe void ToLowerInvariant ()
        {
                string tmp;
                fixed (char* source = tmp); // problem, line 8
        }
}

Follow-up Comments
------------------


-------------------------------------------------------
Date: Fri 12/31/2004 at 13:07       By: James Michael DuPont <mdupont>
This error occurs when compiling mono mcs,
in ./class/corlib/System/String.cs
System/String.cs:1405: incompatible types in assignment: no conversion from 
`System.String' to `char *'
System/String.cs:1409: invalid operands to binary `+'
System/String.cs:763: incompatible types in assignment: no conversion from 
`System.String' to `char *'
System/String.cs:797: incompatible types in assignment: no conversion from 
`System.String' to `char *'


-------------------------------------------------------
Date: Tue 12/28/2004 at 17:28       By: Llewellyn Pritchard <leppie>
class test
{
internal unsafe void ToLowerInvariant ()
{
string tmp = "fooo";
fixed (char* source = tmp); // problem, line 8
char* bar = tmp;
}
}

This produces the following error on MS:
test.cs(8,13): error CS0029: Cannot implicitly convert type 'string' to 'char*'

It appears to allow implicit conversions of some types (maybe just string) 
within the fixed initialization. It fails again when using it in the embedded 
staements of the fixed context.

-------------------------------------------------------
Date: Tue 12/28/2004 at 17:24       By: Llewellyn Pritchard <leppie>
I have tested this with the MS C# compiler, and it does indeed allow that 
implicit conversion, and its news to me!












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