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authorJulia Lawall <julia@diku.dk>2009-10-17 08:43:17 +0200
committerIngo Molnar <mingo@elte.hu>2009-10-17 09:29:10 +0200
commitf39cdf25bf77219676ec5360980ac40b1a7e144a (patch)
tree2143a3653933efc5ffacea647ce8be72952b3a44 /samples
parent434a83c3fbb951908a3a52040f7f0e0b8ba00dd0 (diff)
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perf tools: Move dereference after NULL test
In each case, if the NULL test on thread is needed, then the dereference should be after the NULL test. A simplified version of the semantic match that detects this problem is as follows (http://coccinelle.lip6.fr/): // <smpl> @match exists@ expression x, E; identifier fld; @@ * x->fld ... when != \(x = E\|&x\) * x == NULL // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> LKML-Reference: <Pine.LNX.4.64.0910170842500.9213@ask.diku.dk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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