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CTF: Fix reading a session file

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Use qsizetype. Invert fread arguments to get the read size.

Pick-to: 6.5
Change-Id: I20684dc7a30177394b387e8893198007dbf36eed
Reviewed-by: Janne Koskinen <janne.p.koskinen@qt.io>
Reviewed-by: Hatem ElKharashy <hatem.elkharashy@qt.io>
This commit is contained in:
Antti Määttä 2023-05-09 08:59:23 +03:00
parent 8fa28b0cff
commit 11491fcc5f
1 changed files with 5 additions and 4 deletions
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9
src/plugins/tracing/qctflib.cpp
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@ -12,6 +12,7 @@
#include <qsize.h>
#include <qmetaobject.h>
#include <qendian.h>
#include <qplatformdefs.h>
#include "qctflib_p.h"
#include <filesystem>
@ -79,12 +80,12 @@ QCtfLibImpl::QCtfLibImpl()
m_session.name = QStringLiteral("default");
} else {
fseek(file, 0, SEEK_END);
long pos = ftell(file);
qsizetype pos = ftell(file);
fseek(file, 0, SEEK_SET);
QByteArray data(pos, Qt::Uninitialized);
long size = (long)fread(data.data(), pos, 1, file);
qsizetype size = (qsizetype)fread(data.data(), 1, pos, file);
fclose(file);
if (size != 1)
if (size != pos)
return;
QJsonDocument json(QJsonDocument::fromJson(data));
@ -93,7 +94,7 @@ QCtfLibImpl::QCtfLibImpl()
if (value.isNull() || !value.isArray())
return;
m_session.name = obj.begin().key();
QJsonArray arr = value.toArray();
const QJsonArray arr = value.toArray();
for (auto var : arr)
m_session.tracepoints.append(var.toString());