Open Radar

 
Summary:

NSRegularExpression stringByReplacingMatchesInString:options:range: crashes in certain cases. 

Steps to Reproduce:

Sample code (please also see the attached project):
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		NSString *matchPattern = @"(.*\\.)?(agile\\.ws|agilewebsolutions\\.com)$";
		NSString *template = @"$1agilebits.com";
	    
		NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:matchPattern options:0 error:NULL];
		
		NSString *noCrash = @"www.agile.ws";
		NSString *result1 = [regex stringByReplacingMatchesInString:noCrash options:0 range:NSMakeRange(0, [noCrash length]) withTemplate:template];
		
		if ([@"www.agilebits.com" isEqualToString:result1]) {
			NSLog(@"Works correctly for 'www.agile.ws'");
		}
		
		NSLog(@"Bug: will now throw exception when matching/replacing 'agile.ws'");
		NSString *crash = @"agile.ws";
		
		NSString *result2 = [regex stringByReplacingMatchesInString:crash options:0 range:NSMakeRange(0, [crash length]) withTemplate:template];
		
	    NSLog(@"This line won't be executed: %@", result2);
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