JVM crashes on setting callback for GTK3 signals about jffi HOT 2 OPEN

Note the difference between this issue and jnr/jnr-ffi#281 is that the latter turned out to be mostly due to a mistake in the client code that caused a bad pointer to be passed out to C. Fixing that fixed the issue for me and @enebo but exposed a new crash within jffi for @praj-foss. I asked them to re-open as a jffi issue so we could investigate the problem.

from jffi.

Since we are not currently able to reproduce this issue, I repost what I know about enabling a debug build of jffi:

I believe this diff followed by running ant should get you a jffi binary that has debug symbols:

diff --git a/jni/GNUmakefile b/jni/GNUmakefile
index cfe570a..4a8a061 100755
--- a/jni/GNUmakefile
+++ b/jni/GNUmakefile
@@ -61,7 +61,7 @@ LIBNAME = jffi
 # Compiler/linker flags from:
 #   http://weblogs.java.net/blog/kellyohair/archive/2006/01/compilation_of_1.html
 JFLAGS = -fno-omit-frame-pointer -fno-strict-aliasing -DNDEBUG
-OFLAGS = -O2 $(JFLAGS)
+OFLAGS = -Og -g $(JFLAGS)
 
 # MacOS headers aren't completely warning free, so turn them off
 WERROR = -Werror

We have no leads as to why this particular example crashes inside jffi only on some platforms.

from jffi.