Differences between C++ 'new' operator and 'malloc()' (NOT a C/C++ question)

Al Slater al.slater@scluk.com
Fri Jul 13 08:26:00 GMT 2012

On 12/07/2012 16:59, Claude SIMON wrote:
> Ryan Johnson wrote:
>> [...]
>> Sorry, I should have actually looked at the repo before assuming the
>> test case was a monstrosity. By way of penance, I've now looked,
>> downloaded, tweaked, and tested it.
>> [...]
> Thanks for testing.
> I removed your test results (and the other stuff) from this message, not
> because I'm not interested into, but because I have a new problem, which
> prevents me to investigate further the original problem in the light of
> your test results.
> Since my last testings, I updated Cygwin, the JDK and the JRE. So, my
> current configuration is now :
> Windows Vista 32 bits SP2
> Cygwin 1.7.15
> g++ 4.5.3
> javac 1.7.0_05
> javah 1.7.0_05
> java 1.7.0_05
> When running the test case, I now have :
> $ java jcmc
> Loading library 'jcmc'...Exception in thread "main"
> java.lang.UnsatisfiedLinkError: H:\cvs\epeios\bugs\jcmc\jcmc.dll: L'accÞs
> Ó cet emplacement de la mÚmoire n'est pas valide
>          at java.lang.ClassLoader$NativeLibrary.load(Native Method)
>          at java.lang.ClassLoader.loadLibrary1(Unknown Source)
>          at java.lang.ClassLoader.loadLibrary0(Unknown Source)
>          at java.lang.ClassLoader.loadLibrary(Unknown Source)
>          at java.lang.Runtime.loadLibrary0(Unknown Source)
>          at java.lang.System.loadLibrary(Unknown Source)
>          at jcmc.main(jcmc.java:9)
> There is a French message which roughly means "The access to this memory
> location is not valid"
> I updated the test case to reflect your changes :
> 	- 'Makefile' now generates the '.h' file,
> 	- 'Makefile' does no more contain the '--stdcall-alias' linker flag,
> 	- the '.cpp' contains now the `extern "C"' directive,
> 	- the '.h' is removed from test case, since it's now generated by the
> 'Makefiile'.
> I have the new error message with this modified test case, but also with
> the original one. I suspect that the French error message is issued by
> Cygwin or by one of its sub-component, since the JVM never issued a
> message which wasn't in English, but Cygwin did.
> So, I have to postpone the study of the 'malloc()' related bug until I
> manage to resolve this new issue ; I then come back to your test results.
> But, meanwhile, if someone has an idea why I have this new error...
> Here again the address where the test case can be found :
> 	http://cvs.savannah.gnu.org/viewvc/epeios/bugs/jcmc/?root=epeios

provide any help?

Al Slater

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