57 Debug log Windows:
=====================
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSection 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() 1 100
QDEBUG : tst_QTreeView::setSortingEnabled() 2 100
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections

--> Child case: Column 0 is immediately stretched to width:
QDEBUG : tst_QTreeView::setSortingEnabled() 0 638 QHeaderView::ResizeMode(Interactive)
QDEBUG : tst_QTreeView::setSortingEnabled() 0 638
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSection 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() QHeaderView::resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100 QHeaderView::ResizeMode(Interactive)
QDEBUG : tst_QTreeView::setSortingEnabled() 1 100 QHeaderView::ResizeMode(Interactive)
QDEBUG : tst_QTreeView::setSortingEnabled() 2 438 QHeaderView::ResizeMode(Interactive)
FAIL!  : tst_QTreeView::setSortingEnabled() Compared values are not the same
   Actual   (view.header()->sectionSize(0)): 100
   
  
57 Debug log Linux:
===================

QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSection 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() 1 100
QDEBUG : tst_QTreeView::setSortingEnabled() 2 100
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
--> Child case: Column 0 remains at 100
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100 QHeaderView::ResizeMode(Interactive)
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSection 0 100
QDEBUG : tst_QTreeView::setSortingEnabled() QSize(640, 480)
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() resizeSections
QDEBUG : tst_QTreeView::setSortingEnabled() 0 100 QHeaderView::ResizeMode(Interactive)
QDEBUG : tst_QTreeView::setSortingEnabled() 1 100 QHeaderView::ResizeMode(Interactive)
QDEBUG : tst_QTreeView::setSortingEnabled() 2 100 QHeaderView::ResizeMode(Interactive)
PASS   : tst_QTreeView::setSortingEnabled()
PASS   : tst_QTreeView::cleanupTestCase()
Totals: 3 passed, 0 failed, 0 skipped, 0 blacklisted, 36ms