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When the input data contained a cycle it was possible for tsort to
attempt to access freed nodes. This sometimes resulted in the
test case 'echo a b b a | tsort' crashing.
Don't free nodes when they're removed from the graph.
function old new delta
tsort_main 621 596 -25
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(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-25) Total: -25 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
tsort_main - 578 +578
.rodata 104884 104906 +22
applet_names 2759 2765 +6
applet_main 1596 1600 +4
packed_usage 34290 34288 -2
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(add/remove: 2/0 grow/shrink: 3/1 up/down: 610/-2) Total: 608 bytes
Signed-off-by: David Leonard <d+busybox@adaptive-enterprises.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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