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reflect: make allocation test less fragile.

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When GOMAXPROCS>1, the testing framework runs in parallel with the
test itself and may do a small number of allocations, so allow the
"noAllocs" condition to admit just a few.

Fixes #1782.

R=rsc
CC=golang-dev, rsc
https://golang.org/cl/4533041
This commit is contained in:
Rob Pike 2011-05-17 11:15:14 -04:00 committed by Russ Cox
parent b96fc594ba
commit 1242c76794
1 changed files with 3 additions and 1 deletions
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4
src/pkg/reflect/all_test.go
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@ -1451,7 +1451,9 @@ func noAlloc(t *testing.T, n int, f func(int)) {
for j := 0; j < n; j++ {
f(j)
}
if runtime.MemStats.Mallocs != 0 {
// A few allocs may happen in the testing package when GOMAXPROCS > 1, so don't
// require zero mallocs.
if runtime.MemStats.Mallocs > 5 {
t.Fatalf("%d mallocs after %d iterations", runtime.MemStats.Mallocs, n)
}
}