Bug ID: JDK-8312121 Fix -Wconversion warnings in tribool.hpp

Type: Enhancement
Component: hotspot
Sub-Component: runtime
Affected Version: 22

Priority: P4
Status: Resolved
Resolution: Fixed

Submitted: 2023-07-14
Updated: 2023-08-10
Resolved: 2023-07-28

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JDK 22
22 b09Fixed

There are 450 tribool.hpp Wconversion warnings reported from 3 places when compiling HotSpot.

src/hotspot/share/utilities/tribool.hpp: In constructor 'TriBool::TriBool(bool)':
src/hotspot/share/utilities/tribool.hpp:43:44: warning: conversion from 'unsigned int' to 'unsigned char:2' may change value [-Wconversion]
   43 |   TriBool(bool value) : _value(((u1)value) | 2) {}
      |                                ~~~~~~~~~~~~^~~
src/hotspot/share/utilities/tribool.hpp: In member function 'TriBool& TriBool::operator=(bool)':
src/hotspot/share/utilities/tribool.hpp:47:26: warning: conversion from 'unsigned int' to 'unsigned char:2' may change value [-Wconversion]
   47 |     _value = ((u1)value) | 2;
      |              ~~~~~~~~~~~~^~~
   
src/hotspot/share/utilities/tribool.hpp:76:26: warning: conversion from 'unsigned int' to 'unsigned char:2' may change value [-Wconversion]

Changeset: 47c4b992 Author: Coleen Phillimore <coleenp@openjdk.org> Date: 2023-07-28 12:08:24 +0000 URL: https://git.openjdk.org/jdk/commit/47c4b992b44a5ce120aa4fe9e01279d4c52bca0a

28-07-2023

A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/14892 Date: 2023-07-14 19:47:39 +0000

14-07-2023