http://gambaswiki.org/bugtracker/edit?object=BUG.2675&from=L21haW4- Comment #3 by Benoît MINISINI: What is the output when you run the IDE from a terminal that way? $ GB_JIT_DEBUG=1 gambas3 And: $ GB_JIT_DEBUG=1 GB_JIT_CFLAGS=-O0 gambas3 Benoît MINISINI changed the state of the bug to: NeedsInfo.