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-rw-r--r--.gitignore1
-rw-r--r--cmake/QtDeclarativeSetup.cmake53
-rw-r--r--src/qml/CMakeLists.txt1
-rw-r--r--src/qml/common/qv4compileddata.cpp36
-rw-r--r--src/qml/common/qv4compileddata_p.h12
-rw-r--r--src/qml/compiler/qv4compiler.cpp3
-rw-r--r--tests/auto/qml/qmldiskcache/tst_qmldiskcache.cpp17
7 files changed, 5 insertions, 118 deletions
diff --git a/.gitignore b/.gitignore
index e3756b608c..8a269d3336 100644
--- a/.gitignore
+++ b/.gitignore
@@ -351,7 +351,6 @@ tests/auto/*/*/*/*.moc
src/qml/RegExpJitTables.h
src/qml/udis86_itab.c
src/qml/udis86_itab.h
-src/qml/qml_compile_hash_p.h
# Generated HLSL bytecode headers
*.hlslh
diff --git a/cmake/QtDeclarativeSetup.cmake b/cmake/QtDeclarativeSetup.cmake
index b174756343..48ddd3f672 100644
--- a/cmake/QtDeclarativeSetup.cmake
+++ b/cmake/QtDeclarativeSetup.cmake
@@ -1,59 +1,6 @@
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
-# Create a header containing a hash that describes this library. For a
-# released version of Qt, we'll use the .tag file that is updated by git
-# archive with the tree hash. For unreleased versions, we'll do
-# "git show -s --format=format:%T" to get the tree hash. If none of this
-# works, we use CMake to hash all the files in the src/qml/ directory.
-# Skip recreation of the hash when doing a developer build.
-function(qt_declarative_write_tag_header target_name)
- set(out_file "${CMAKE_CURRENT_BINARY_DIR}/qml_compile_hash_p.h")
- if(FEATURE_developer_build AND EXISTS "${out_file}")
- target_sources(${target_name} PRIVATE "${out_file}")
- set_source_files_properties("${out_file}" PROPERTIES GENERATED TRUE)
- return()
- endif()
-
- set(tag_file "${CMAKE_CURRENT_SOURCE_DIR}/../../.tag")
- set(tag_contents "")
- if(EXISTS "${tag_file}")
- file(READ "${tag_file}" tag_contents)
- string(STRIP "${tag_contents}" tag_contents)
- endif()
- find_program(git_path git)
-
- if(tag_contents AND NOT tag_contents STREQUAL "$Format:%T$")
- set(QML_COMPILE_HASH "${tag_contents}")
- elseif(git_path AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../../.git")
- execute_process(
- COMMAND ${git_path} show -s --format=format:%T HEAD
- OUTPUT_VARIABLE QML_COMPILE_HASH
- OUTPUT_STRIP_TRAILING_WHITESPACE
- WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}")
- endif()
- string(LENGTH "${QML_COMPILE_HASH}" QML_COMPILE_HASH_LENGTH)
- if(QML_COMPILE_HASH_LENGTH EQUAL 0)
- set(sources_hash "")
- file(GLOB_RECURSE qtqml_source_files "${CMAKE_CURRENT_SOURCE_DIR}/*")
- foreach(file IN LISTS qtqml_source_files)
- file(SHA1 ${file} file_hash)
- string(APPEND sources_hash ${file_hash})
- endforeach()
- string(SHA1 QML_COMPILE_HASH "${sources_hash}")
- endif()
-
- string(LENGTH "${QML_COMPILE_HASH}" QML_COMPILE_HASH_LENGTH)
- if(QML_COMPILE_HASH_LENGTH GREATER 0)
- configure_file("qml_compile_hash_p.h.in" "${out_file}")
- else()
- message(FATAL_ERROR "QML compile hash is empty! "
- "You need either a valid git repository or a non-empty .tag file.")
- endif()
- target_sources(${target_name} PRIVATE "${out_file}")
- set_source_files_properties("${out_file}" PROPERTIES GENERATED TRUE)
-endfunction()
-
# Generate a header file containing a regular expression jit table.
function(qt_declarative_generate_reg_exp_jit_tables consuming_target)
set(generate_dir "${CMAKE_CURRENT_BINARY_DIR}/.generated")
diff --git a/src/qml/CMakeLists.txt b/src/qml/CMakeLists.txt
index bd02dd1376..c0ea99b5fa 100644
--- a/src/qml/CMakeLists.txt
+++ b/src/qml/CMakeLists.txt
@@ -521,7 +521,6 @@ set_source_files_properties(compat/removed_api.cpp
# ""
#)
-qt_declarative_write_tag_header(Qml)
set(_qt_qlalr_flags "--no-debug" "--qt")
qt_process_qlalr(Qml "${CMAKE_CURRENT_SOURCE_DIR}/parser/qqmljs.g" "${_qt_qlalr_flags}")
qt_declarative_generate_reg_exp_jit_tables(Qml)
diff --git a/src/qml/common/qv4compileddata.cpp b/src/qml/common/qv4compileddata.cpp
index 3959c0c2a5..9ce5f5058f 100644
--- a/src/qml/common/qv4compileddata.cpp
+++ b/src/qml/common/qv4compileddata.cpp
@@ -4,7 +4,6 @@
#include "qv4compileddata_p.h"
#include <private/inlinecomponentutils_p.h>
-#include <private/qml_compile_hash_p.h>
#include <private/qqmlscriptdata_p.h>
#include <private/qqmltypenamecache_p.h>
#include <private/qv4resolvedtypereference_p.h>
@@ -16,21 +15,6 @@
#include <QtCore/qstandardpaths.h>
#include <QtCore/qxpfunctional.h>
-static_assert(QV4::CompiledData::QmlCompileHashSpace > QML_COMPILE_HASH_LENGTH);
-
-#if defined(QML_COMPILE_HASH) && defined(QML_COMPILE_HASH_LENGTH) && QML_COMPILE_HASH_LENGTH > 0
-# ifdef Q_OS_LINUX
-// Place on a separate section on Linux so it's easier to check from outside
-// what the hash version is.
-__attribute__((section(".qml_compile_hash")))
-# endif
-const char qml_compile_hash[QV4::CompiledData::QmlCompileHashSpace] = QML_COMPILE_HASH;
-static_assert(sizeof(QV4::CompiledData::Unit::libraryVersionHash) > QML_COMPILE_HASH_LENGTH,
- "Compile hash length exceeds reserved size in data structure. Please adjust and bump the format version");
-#else
-# error "QML_COMPILE_HASH must be defined for the build of QtDeclarative to ensure version checking for cache files"
-#endif
-
QT_BEGIN_NAMESPACE
namespace QV4 {
@@ -50,12 +34,6 @@ bool Unit::verifyHeader(QDateTime expectedSourceTimeStamp, QString *errorString)
return false;
}
- if (qtVersion != quint32(QT_VERSION)) {
- *errorString = QString::fromUtf8("Qt version mismatch. Found %1 expected %2")
- .arg(qtVersion, 0, 16).arg(QT_VERSION, 0, 16);
- return false;
- }
-
if (sourceTimeStamp) {
// Files from the resource system do not have any time stamps, so fall back to the application
// executable.
@@ -69,20 +47,6 @@ bool Unit::verifyHeader(QDateTime expectedSourceTimeStamp, QString *errorString)
}
}
-#if defined(QML_COMPILE_HASH) && defined(QML_COMPILE_HASH_LENGTH) && QML_COMPILE_HASH_LENGTH > 0
- if (qstrncmp(qml_compile_hash, libraryVersionHash, QML_COMPILE_HASH_LENGTH) != 0) {
- *errorString = QStringLiteral("QML compile hashes don't match. Found %1 expected %2")
- .arg(QString::fromLatin1(
- QByteArray(libraryVersionHash, QML_COMPILE_HASH_LENGTH)
- .toPercentEncoding()),
- QString::fromLatin1(
- QByteArray(qml_compile_hash, QML_COMPILE_HASH_LENGTH)
- .toPercentEncoding()));
- return false;
- }
-#else
-#error "QML_COMPILE_HASH must be defined for the build of QtDeclarative to ensure version checking for cache files"
-#endif
return true;
}
diff --git a/src/qml/common/qv4compileddata_p.h b/src/qml/common/qv4compileddata_p.h
index 46112c3034..889df101d0 100644
--- a/src/qml/common/qv4compileddata_p.h
+++ b/src/qml/common/qv4compileddata_p.h
@@ -51,7 +51,7 @@ QT_BEGIN_NAMESPACE
// Also change the comment behind the number to describe the latest change. This has the added
// benefit that if another patch changes the version too, it will result in a merge conflict, and
// not get removed silently.
-#define QV4_DATA_STRUCTURE_VERSION 0x44 // added a flag to mark properties as final from QML
+#define QV4_DATA_STRUCTURE_VERSION 0x45 // Removed Qt version and compile hash checks
class QIODevice;
class QQmlTypeNameCache;
@@ -1203,7 +1203,6 @@ struct QmlUnit
};
static_assert(sizeof(QmlUnit) == 16, "QmlUnit structure needs to have the expected size to be binary compatible on disk when generated by host compiler and loaded by target");
-enum { QmlCompileHashSpace = 48 };
static const char magic_str[] = "qv4cdata";
struct Unit
@@ -1211,12 +1210,11 @@ struct Unit
// DO NOT CHANGE THESE FIELDS EVER
char magic[8];
quint32_le version;
- quint32_le qtVersion;
- qint64_le sourceTimeStamp;
- quint32_le unitSize; // Size of the Unit and any depending data.
// END DO NOT CHANGE THESE FIELDS EVER
- char libraryVersionHash[QmlCompileHashSpace];
+ quint32_le reserved; // For predictable alignment and size. Used to be Qt version.
+ qint64_le sourceTimeStamp;
+ quint32_le unitSize; // Size of the Unit and any depending data.
char md5Checksum[16]; // checksum of all bytes following this field.
char dependencyMD5Checksum[16];
@@ -1387,7 +1385,7 @@ struct Unit
bool verifyHeader(QDateTime expectedSourceTimeStamp, QString *errorString) const;
};
-static_assert(sizeof(Unit) == 248, "Unit structure needs to have the expected size to be binary compatible on disk when generated by host compiler and loaded by target");
+static_assert(sizeof(Unit) == 200, "Unit structure needs to have the expected size to be binary compatible on disk when generated by host compiler and loaded by target");
struct TypeReference
{
diff --git a/src/qml/compiler/qv4compiler.cpp b/src/qml/compiler/qv4compiler.cpp
index 7a7c8f621b..ad1390a650 100644
--- a/src/qml/compiler/qv4compiler.cpp
+++ b/src/qml/compiler/qv4compiler.cpp
@@ -9,7 +9,6 @@
#include <private/qv4alloca_p.h>
#include <private/qqmljslexer_p.h>
#include <private/qqmljsast_p.h>
-#include <private/qml_compile_hash_p.h>
#include <private/qqmlirbuilder_p.h>
#include <QCryptographicHash>
#include <QtEndian>
@@ -632,8 +631,6 @@ QV4::CompiledData::Unit QV4::Compiler::JSUnitGenerator::generateHeader(QV4::Comp
unit.flags = QV4::CompiledData::Unit::IsJavascript;
unit.flags |= module->unitFlags;
unit.version = QV4_DATA_STRUCTURE_VERSION;
- unit.qtVersion = QT_VERSION;
- qstrcpy(unit.libraryVersionHash, QML_COMPILE_HASH);
memset(unit.md5Checksum, 0, sizeof(unit.md5Checksum));
memset(unit.dependencyMD5Checksum, 0, sizeof(unit.dependencyMD5Checksum));
diff --git a/tests/auto/qml/qmldiskcache/tst_qmldiskcache.cpp b/tests/auto/qml/qmldiskcache/tst_qmldiskcache.cpp
index dc7490c18a..a6ea3b2e97 100644
--- a/tests/auto/qml/qmldiskcache/tst_qmldiskcache.cpp
+++ b/tests/auto/qml/qmldiskcache/tst_qmldiskcache.cpp
@@ -281,11 +281,8 @@ void tst_qmldiskcache::loadLocalAsFallback()
QV4::CompiledData::Unit unit = {};
memcpy(unit.magic, QV4::CompiledData::magic_str, sizeof(unit.magic));
unit.version = QV4_DATA_STRUCTURE_VERSION;
- unit.qtVersion = QT_VERSION;
unit.sourceTimeStamp = testCompiler.mappedFile.fileTime(QFile::FileModificationTime).toMSecsSinceEpoch();
unit.unitSize = ~0U; // make the size a silly number
- // write something to the library hash that should cause it not to be loaded
- memset(unit.libraryVersionHash, 'z', sizeof(unit.libraryVersionHash));
memset(unit.md5Checksum, 0, sizeof(unit.md5Checksum));
// leave the other fields unset, since they don't matter
@@ -428,20 +425,6 @@ void tst_qmldiskcache::basicVersionChecks()
testCompiler.clearCache();
QVERIFY2(testCompiler.compile(contents), qPrintable(testCompiler.lastErrorString));
- const QString qtVersionFile = QStringLiteral("qtversion.qml");
- QVERIFY(testCompiler.tweakHeader([](QV4::CompiledData::Unit *header) {
- header->qtVersion = 0;
- }, qtVersionFile));
-
- QVERIFY(!testCompiler.verify(qtVersionFile));
- QCOMPARE(testCompiler.lastErrorString, QString::fromUtf8("Qt version mismatch. Found 0 expected %1").arg(QT_VERSION, 0, 16));
- testCompiler.clearCache(qtVersionFile);
- }
-
- {
- testCompiler.clearCache();
- QVERIFY2(testCompiler.compile(contents), qPrintable(testCompiler.lastErrorString));
-
const QString versionFile = QStringLiteral("version.qml");
QVERIFY(testCompiler.tweakHeader([](QV4::CompiledData::Unit *header) {
header->version = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-15 03:51:27 +0000