[MELT] issue with the garbage collector

[<piervit at pvittet dot com>]

Hello,

I guess I have found a bug about related to the garbage collector in 
MELT:
I am using the version 170521.
When I run a trivial plugin (let say a plugin that do nothing) on this 
c file :

int functionOne(){
   return 1;
}

int functionTwo(){
   return 1;
}

int functionThree(){
   return 1;
}

It works correctly and finish with this message:

!@melt-runtime.c:9205:
@! melt_finalize with 15 GarbColl, 0 fullGc

Now if you just add a new function:

int functionOne(){
   return 1;
}

int functionTwo(){
   return 1;
}

int functionThree(){
   return 1;
}
int functionFour(){
   return 1;
}

It will finish like that (full debug in attached file):

!@melt-runtime.c:11120:
@! gimple_execute passname melt_test_ptr after apply dbgcounter 206
!@melt-runtime.c:1196:
@! melt_garbcoll #16 fullgarbcoll #1
!@melt-runtime.c:1199:
@! melt_garbcoll forcing fullgarbcoll #1
!@melt-runtime.c:1202:
@! melt_garbcoll forced fullgarbcoll #1
!@melt-runtime.c:11134:
@! meltgc_gimple_execute pass melt_test_ptr ended res=0d
*** WARNING *** there are active plugins, do not report this as a bug 
unless you can reproduce it without enabling any plugins.
Event                            | Plugins
PLUGIN_FINISH_UNIT               | MELT/_builtin
PLUGIN_FINISH                    | MELT/_builtin
PLUGIN_GGC_MARKING               | MELT/_builtin
PLUGIN_ATTRIBUTES                | MELT/_builtin
PLUGIN_START_UNIT                | MELT/_builtin
test_ptr_cfile2.c:14:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make: *** [test_ptr] Error 1

Attachment: debug.txt
Description: Text document