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inst.h (FOR_PKG_INSTS): protect against active_pkg == NULL
active_pkg can become NULL if the root frame contains a loop that will never execute, i.e., loop x = 1, 0 This caused fped to segfault when FOR_PKG_INSTS was called from FOR_ALL_INSTS in inst_draw.
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inst.h
2
inst.h
@ -155,7 +155,7 @@ extern struct inst *frame_instantiating;
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for (prio = ip_n-1; prio != (enum inst_prio) -1; prio--)
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#define FOR_PKG_INSTS(pkg, prio, inst) \
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for (inst = (pkg)->insts[prio]; inst; inst = inst->next)
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for (inst = (pkg) ? (pkg)->insts[prio] : NULL; inst; inst = inst->next)
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#define FOR_ALL_INSTS(i, prio, inst) \
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for (i = 0; i != 2; i++) \
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