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Added test that makes sure that void* doesn't catch id. Currently crashes on OS X, but is a known bug.

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@32666 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
theraven 2011-03-21 11:52:30 +00:00
parent 74f0642938
commit fb8ad303e3
1 changed files with 52 additions and 0 deletions
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52
Tests/base/NSException/skipCatchall.mm Normal file
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#import <ObjectTesting.h>
#import <Foundation/NSObject.h>
#if !__has_feature(objc_nonfragile_abi)
int main(void)
{
START_SET("Unified exception model")
SKIP("Unified exception model not supported")
END_SET("Unified exception model")
return 0;
}
#else
/**
* Tests whether void* catches Objective-C objects thrown as exceptions.
* According to John McCall at Apple, the correct behaviour is not to catch
* them in void* (which makes sense - void* is effectively a restricted
* catchall, and we don't want to be catching foreign exceptions there because
* we don't know what to do with them). In fact, the current behaviour on OS X
* (with g++, not tested with clang++) is not simply to not catch them, it is
* also to crash with a segfault. Current behaviour with clang + libobjc2 is
* to do the Right Thing™.
*/
int main(void)
{
NSString *foo = @"foo";
id caught = nil;
int final = 0;
int wrongCatch = 0;
try
{
@throw foo;
}
catch (void *foo)
{
wrongCatch = 1;
}
catch (NSString *f)
{
caught = f;
}
catch(...)
{
final = 1;
}
pass(0==final, "catchall not used to catch object");
pass(0==wrongCatch, "Incorrect object catch not used to catch object");
pass(caught == foo, "Unified exception model works correctly");
return 0;
}
#endif