Rebecca, do you think there is a way to trigger this bug with certainty?
Even if that means modifying the sources to create an artificial trigger
for the bug?
It happens when naGC_swapfree finds that the Nasal dead list is full, so
we can make it more likely by reducing that limit:
Description: Make #750939 more likely for testing
--- simgear-3.0.0.orig/simgear/nasal/gc.c
+++ simgear-3.0.0/simgear/nasal/gc.c
@@ -328,7 +328,7 @@ void naGC_swapfree(void** target, void*
void* old;
LOCK();
old = doswap(target, val);
- while(globals->ndead >= globals->deadsz)
+ while(globals->ndead >= 5)
bottleneck();
globals->deadBlocks[globals->ndead++] = old;
UNLOCK();
With this, gdb --args fgfs --aircraft=b1900d --airport=NZNV and pressing
'v' a few times reliably triggers it, allowing me to confirm that the
patch works.
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