Re: function signature "funny"

Hi Peter, David and all,

SableVM simply implements the published specification.  In
http://java.sun.com/docs/books/jni/html/functions.html you can read:

 GetStringUTFChars

 Prototype const jbyte * GetStringUTFChars(JNIEnv *env, jstring string,
jboolean *isCopy);

So, if Sun's "super secret" jni.h is different, I think there's a
specification bug.  This shows you Sun's arrogance; they don't think
that fixing specification bugs is important...  I do not look at Sun's
jni.h file, as Sun claims that any source code in their software
development kit is confidential intellectual property; I have no wish of
"stealing" any of their super secret intellectual property.

Etienne

David Bélanger wrote:
> On Sat, Jun 11, 2005 at 01:28:07PM -0400, Grzegorz B. Prokopski wrote:
> 
>>On Wed, 2005-08-06 at 17:50 -0400, Peter Lovell wrote:
>>
>>>Hi folks,
>>>I'm trying to get all the warnings out of code we have and I ran into  
>>>what seems to be to be an anomaly.
>>>
>>>Considering the following snippet from jni.h
>>>
>>>  typedef _svmt_s8 jbyte;
>>>
>>>  const jbyte *(JNICALL *GetStringUTFChars) (JNIEnv *env, jstring  
>>>string,
>>>                           jboolean *isCopy);    /* 169 */
>>>   void (JNICALL *ReleaseStringUTFChars) (JNIEnv *env, jstring string,
>>>                       const char *utf);    /* 170 */
>>>
>>>note also that jni_system_specific defines ...
>>>typedef signed char _svmt_s8;
>>
>>Unless I misread, "const jbyte" becomes "const signed char".  Isn't that
>>just about the same as "const char"?  I mean: "const char" is signed
>>[*], isn't it?  Am I missing something or GCC4 is overpicky here?
>>
> 
> 
> Maybe, but why in SableVM it is jbyte and not char?  A small mistake or
> there is some reason behind using jbyte that I don't see?

-- 
Etienne M. Gagnon, Ph.D.            http://www.info2.uqam.ca/~egagnon/
SableVM:                                       http://www.sablevm.org/
SableCC:                                       http://www.sablecc.org/

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