mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-11-25 04:39:48 +00:00
24 lines
769 B
Bash
24 lines
769 B
Bash
#!/bin/sh
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# Leak test for gunzip. Watch top for growing process size.
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# In this case we look for leaks in "concatenated .gz" code -
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# we feed gunzip with a stream of .gz files.
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i=$PID
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c=0
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while true; do
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c=$((c + 1))
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echo "Block# $c" >&2
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# RANDOM is not very random on some shells. Spice it up.
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i=$((i * 1664525 + 1013904223))
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# 100003 is prime
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len=$(( (((RANDOM*RANDOM)^i) & 0x7ffffff) % 100003 ))
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# Just using urandom will make gzip use method 0 (store) -
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# not good for test coverage!
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cat /dev/urandom \
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| while true; do read junk; echo "junk $c $i $junk"; done \
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| dd bs=$len count=1 2>/dev/null \
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| gzip >xxx.gz
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cat xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz xxx.gz
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done | ../busybox gunzip -c >/dev/null
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