Fix warnings in tests (MinGW/MSCV)

tst_qtcpsocket.cpp:606:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
tst_qtcpsocket.cpp:670:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
tst_qfile.cpp(2661): warning C4334: '<<': result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
tst_qarraydata.cpp(760): warning C4334: '<<': result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
main.cpp:40:33: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result]

Change-Id: I80ccef29b71af6a2c3d45a79aedaeb37f49bba72
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>

1 files changed, 3 insertions, 2 deletions

diff --git a/tests/auto/corelib/io/qfile/tst_qfile.cpp b/tests/auto/corelib/io/qfile/tst_qfile.cpp
index 287b8aebd8..2ef4c2c6a1 100644
--- a/tests/auto/corelib/io/qfile/tst_qfile.cpp
+++ b/tests/auto/corelib/io/qfile/tst_qfile.cpp
@@ -2618,9 +2618,10 @@ void tst_QFile::appendAndRead()
 
     // Write blocks and read them back
     for (int j = 0; j < 18; ++j) {
-        writeFile.write(QByteArray(1 << j, '@'));
+        const int size = 1 << j;
+        writeFile.write(QByteArray(size, '@'));
         writeFile.flush();
-        QCOMPARE(readFile.read(1 << j).size(), 1 << j);
+        QCOMPARE(readFile.read(size).size(), size);
     }
 
     readFile.close();