DF-0034 leak variance: st_padding1[0] dominant byte values across 3 runs of leak_sharp
(genuine uninitialized stack residue: distributions differ each run, occasional wild values)
samples with non-zero/non-marker st_padding1[0]: 17844 / 20000
  0xfe : 10350
  0x69 : 7494
samples with non-zero/non-marker st_padding1[0]: 11098 / 20000
  0x19 : 9364
  0x68 : 1733
  0x1c : 1
samples with non-zero/non-marker st_padding1[0]: 5438 / 20000
  0x50 : 5437
  0x42 : 1