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reflect: compute the median h uniformly

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Like sort.Search, use "h := int(uint(i+j) >> 1)" style code to compute
the median h.
This commit is contained in:
Jes Cok 2023-10-08 00:02:10 +08:00
parent f711892a8a
commit cbfba7ee9a
1 changed files with 1 additions and 1 deletions
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2
src/reflect/type.go
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@ -1539,7 +1539,7 @@ func typesByString(s string) []*abi.Type {
// This is a copy of sort.Search, with f(h) replaced by (*typ[h].String() >= s).
i, j := 0, len(offs)
for i < j {
h := i + (j-i)>>1 // avoid overflow when computing h
h := int(uint(i+j) >> 1) // avoid overflow when computing h
// i ≤ h < j
if !(stringFor(rtypeOff(section, offs[h])) >= s) {
i = h + 1 // preserves f(i-1) == false