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8347272: [ubsan] JvmLauncher.cpp:262:52: runtime error: applying non-zero offset 40 to null pointer

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Reviewed-by: almatvee, mbaesken
This commit is contained in:
Alexey Semenyuk 2025-01-28 13:51:04 +00:00
parent 5fec999474
commit fb066caea8
1 changed files with 4 additions and 3 deletions
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7
src/jdk.jpackage/share/native/applauncher/JvmLauncher.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -259,7 +259,8 @@ private:
int initJvmlLauncherData(JvmlLauncherData* ptr) const {
// Store path to JLI library just behind JvmlLauncherData header.
char* curPtr = reinterpret_cast<char*>(ptr + 1);
JvmlLauncherData dummy;
char* curPtr = reinterpret_cast<char*>((ptr ? ptr : &dummy) + 1);
{
const size_t count = sizeof(char)
* (jliLibPath.size() + 1 /* trailing zero */);
@ -304,7 +305,7 @@ private:
curPtr = copyStrings(envVarValues, ptr,
offsetof(JvmlLauncherData, envVarValues), curPtr);
const size_t bufferSize = curPtr - reinterpret_cast<char*>(ptr);
const size_t bufferSize = curPtr - reinterpret_cast<char*>(ptr ? ptr : &dummy);
if (ptr) {
LOG_TRACE(tstrings::any() << "Initialized " << bufferSize
<< " bytes at " << ptr << " address");