Submitted by: @pavel-zotov

Run following script several times:

recreate table test(x int);
commit;
set term ^;
execute block as
declare ddl varchar(128);
begin
ddl = '-- table ''test'' has no trigger, DROP TRIGGER is skipped.';
execute statement ddl;
end
^
set term ;^

Output will be:

#⁠#⁠#⁠ FB 2.5 #⁠#⁠#⁠

C:\FBTESTING\OLTP-EMUL\src>C:\FB\25sC\bin\isql /:e25 -i qq.sql
Statement failed, SQLSTATE = 42000
Dynamic SQL Error
-SQL error code = -104
-Unexpected end of command - line 1, column 1676729881
-At block line: 5, col: 3
After line 3 in file qq.sql

For 2nd and subsequent runs:

-Unexpected end of command - line 1, column 1676795417
-Unexpected end of command - line 1, column 1676729881
-Unexpected end of command - line 1, column 1676795417
-Unexpected end of command - line 1, column 1676729881
-Unexpected end of command - line 1, column 1676795417

(then these two numbers are alternated, no more new values)

#⁠#⁠#⁠ FB 4.0 #⁠#⁠#⁠

C:\FBTESTING\OLTP-EMUL\src>isql /:e40 -i qq.sql
Statement failed, SQLSTATE = 42000
Dynamic SQL Error
-SQL error code = -104
-Unexpected end of command - line 1, column -106316575
-At block line: 5, col: 3
After line 3 in file qq.sql

For 2nd and subsequent runs:

-Unexpected end of command - line 1, column -100957727
-Unexpected end of command - line 1, column -105479711
-Unexpected end of command - line 1, column -105414175
-Unexpected end of command - line 1, column -105414175
-Unexpected end of command - line 1, column -95387167
-Unexpected end of command - line 1, column -89030175

(values of column seems to be changed randomly).

Commits: 32e7474 a8e6309 24d9982 00586d5