assert   
  + CHECKED_EXPR                    select iif( coalesce(t_dat, t_boo, t_blb, t_chr, t_int, t_tim, t_tst) is distinct from null, 1, 0 ) as x from dvalues
  + RAISED_GDS                      335544436
  + CHECKED_EXPR                    select iif( coalesce(t_dat, t_boo, t_blb, t_chr, t_int, t_tst, t_tim) is distinct from null, 1, 0 ) as x from dvalues
  + RAISED_GDS                      335544436
  + CHECKED_EXPR                    select iif( coalesce(t_dat, t_boo, t_blb, t_chr, t_tim, t_int, t_tst) is distinct from null, 1, 0 ) as x from dvalues
  + RAISED_GDS                      335544436
  + CHECKED_EXPR                    select iif( coalesce(t_dat, t_boo, t_blb, t_chr, t_tim, t_tst, t_int) is distinct from null, 1, 0 ) as x from dvalues
  + RAISED_GDS                      335544436
  + CHECKED_EXPR                    select iif( coalesce(t_dat, t_boo, t_blb, t_chr, t_tst, t_int, t_tim) is distinct from null, 1, 0 ) as x from dvalues
  + RAISED_GDS                      335544436
  + 

[...SKIPPED...]

2024-08-09 16:27:16.097 E         + CHECKED_EXPR                    select iif( coalesce(t_tst, t_boo, t_tim, t_int, t_dat, t_blb, t_chr) is distinct from null, 1, 0 ) as x from dvalues
2024-08-09 16:27:16.102 E         + RAISED_GDS                      335544436
2024-08-09 16:27:16.109 E         + CHECKED_EXPR                    select iif( coalesce(t_tst, t_boo, t_tim, t_int, t_dat, t_chr, t_blb) is distinct from null, 1, 0 ) as x from dvalues
2024-08-09 16:27:16.115 E         + RAISED_GDS                      335544436
2024-08-09 16:27:16.121 E         - Records affected: 0
2024-08-09 16:27:16.126 E         + Records affected: 480
2024-08-09 16:27:16.138
2024-08-09 16:27:16.144 tests/bugs/gh_8178_addi_test.py:117: AssertionError
2024-08-09 16:27:16.149 ---------------------------- Captured stdout setup -----------------------------
2024-08-09 16:27:16.155 Creating db: localhost:/var/tmp/qa_2024/test_11321/test.fdb [page_size=None, sql_dialect=None, charset='NONE', user=SYSDBA, password=masterkey]