JNAerated libraries crash or hang in printf on win32

[ochafik]

From @leahxschmidt on December 27, 2012 16:37

To reproduce, do the following, on a 32-bit Windows XP system (I am using a 32-bit VM on a 64-bit host, if that matters).

Install cygwin, including gcc, and make.

git clone https://github.com/leahxschmidt/testjnaerator.git
cd testjnaerator
make
cd java
javac -cp test_linux.jar:. JavaTest.java
java -cp test_linux.jar:. -Djna.nosys=true JavaTest

now, manually extract the jar -- see #351

jar xf test_win32.jar
java -cp . -Djna.library.path=lib/win32/ JavaTest

For me, this hangs. But I have tried a bunch of variants on the C code and some also make the JVM crash in cygwin's aclcheck function (I think inet_addr typically does this). On 64-bit Windows XP, this code runs correctly (well, the printf stuff gets printed after the Java println but I assume this is due to buffering; that doesn't bother me).

Copied from original issue: nativelibs4java/nativelibs4java#352

[ochafik]

Hi @leahxschmidt ,

Thanks for your detailed report!

GCC on Windows is not currently officially supported (not tested at all, actually), but have you tried using the -gccLong option of JNAerator?

Cheers

[ochafik]

From @leahxschmidt on January 8, 2013 17:45

I decided to just switch to mingw (and JNI, since the library I was using only had like four functions).