Re: [Bug objc++/35967] New: Local variables interpreted as volatile following a @try block

2008-04-17 Thread Andrew Pinski 



Sent from my iPhone

On Apr 17, 2008, at 12:37, "ymeroz at earthlink dot net" <[EMAIL PROTECTED] 
> wrote:



Test case:
- start file bug.mm
@interface TestClass
-(void) testMethod;
@end

void ff (int& i)
{
}

@implementation TestClass

-(void) testMethod
{
   int i = 1;
   int& iref = i;

   @try
   {}
   @catch (id)
   {}
   @finally
   {}

   ff (i); // Bug
   ff (iref);  // OK
}
@end

- end file


This is a side effect of how the next runtime implements their  
exceptions.






gcc --version
i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build  
5370)


gcc-4.0 -x objective-c++ -fobjc-exceptions -c bug.mm

bug.mm: In function 'void -[TestClass testMethod](TestClass*,  
objc_selector*)':
bug.mm:23: error: invalid initialization of reference of type 'int&'  
from

expression of type 'volatile int'
bug.mm:5: error: in passing argument 1 of 'void ff(int&)'

Summary:
Adding Obj-C try/catch/finally blocks causes i to be considered  
volatile

afterwards.

Workaround:
Create a reference to i and use that instead.


--
  Summary: Local variables interpreted as volatile following  
a @try

   block
  Product: gcc
  Version: 4.0.1
   Status: UNCONFIRMED
 Severity: normal
 Priority: P3
Component: objc++
   AssignedTo: unassigned at gcc dot gnu dot org
   ReportedBy: ymeroz at earthlink dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35967

[Bug objc++/35967] New: Local variables interpreted as volatile following a @try block

2008-04-17 Thread ymeroz at earthlink dot net 
Test case:
- start file bug.mm
@interface TestClass
-(void) testMethod;
@end

void ff (int& i)
{
}

@implementation TestClass

-(void) testMethod
{
int i = 1;
int& iref = i;

@try
{}
@catch (id)
{}
@finally
{}

ff (i); // Bug
ff (iref);  // OK
}
@end

- end file

gcc --version
i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5370)

gcc-4.0 -x objective-c++ -fobjc-exceptions -c bug.mm

bug.mm: In function 'void -[TestClass testMethod](TestClass*, objc_selector*)':
bug.mm:23: error: invalid initialization of reference of type 'int&' from
expression of type 'volatile int'
bug.mm:5: error: in passing argument 1 of 'void ff(int&)'

Summary:
Adding Obj-C try/catch/finally blocks causes i to be considered volatile
afterwards.

Workaround:
Create a reference to i and use that instead.


-- 
   Summary: Local variables interpreted as volatile following a @try
block
   Product: gcc
   Version: 4.0.1
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: objc++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ymeroz at earthlink dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35967