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JDK-8374852: correct comment and make more concise

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This commit is contained in:
Damon Fenacci 2026-01-15 16:49:06 +01:00
parent 6808ebe77c
commit 52a3681555
1 changed files with 5 additions and 5 deletions
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10
test/hotspot/jtreg/compiler/intrinsics/string/TestRangeCheck.java
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@ -54,11 +54,11 @@ public class TestRangeCheck {
// to the `StringCoding::countPositives0` intrinsic.
// `countPositives` validates its input using
// `Preconditions::checkFromIndexSize`, which also maps to an
// intrinsic. When `checkFromIndexSize` is not inlined, C2 does not
// know about the explicit range checks, and does not cut off the
// dead code. As a result, an invalid value (e.g., `-1`) can be fed
// as input into the `countPositives0` intrinsic, got replaced
// by TOP, and cause a failure in the matcher.
// intrinsic. If `checkFromIndexSize` is not inlined,
// C2 lacks knowledge of the explicit range checks, so an invalid
// index (e.g., -1) can reach `countPositives0`. The intrinsic then
// replaces the out‑of‑range data input with TOP, preserving the
// control flow, which leads to a matcher failure.
return JLA.countPositives(bytes, -1, 42);
} catch (Exception e) {
return 0;