test$ cat test1.asm

%ifdef __?NASM_IFDIRECTIVE?__
 %ifdirective %note
  %note foo
 %endif
%endif
test$ cat test2.asm
%macro bar 0
 %ifdirective %note
  %note foo
 %endif
%endmacro

%ifdef __?NASM_IFDIRECTIVE?__
 bar
%endif
test$ cat test3.asm

%ifdef __?NASM_IFDIRECTIVE?__
 %if %isdirective(%note)
  %note foo
 %endif
%endif
test$ nasm -v
NASM version 2.16.02rc2 compiled on Oct 12 2023
test$ nasm test1.asm -l /dev/stderr
test1.asm:6: error: `%endif': no matching `%if'
test$ nasm test2.asm -l /dev/stderr
     1                                  %macro bar 0
     2                                   %ifdirective %note
     3                                    %note foo
     4                                   %endif
     5                                  %endmacro
     6
     7                                  %ifdef __?NASM_IFDIRECTIVE?__
     8                                   bar
     9                                  %endif
test$ nasm test3.asm -l /dev/stderr
     1
     2                                  %ifdef __?NASM_IFDIRECTIVE?__
     3                                   %if %isdirective(%note)
     4                                    %note foo
     5                                   %endif
     6                                  %endif
test$ ~/proj/nasmtest/broken/nasm -v
NASM version 3.00rc3 compiled on Sep  9 2025
test$ ~/proj/nasmtest/broken/nasm test1.asm -l /dev/stderr
     1
     2                                  %ifdef __?NASM_IFDIRECTIVE?__
     3                                   %ifdirective %note
     4                                    %note foo
     4          ------------------       note: foo
     5                                   %endif
     6                                  %endif
test$ ~/proj/nasmtest/broken/nasm test2.asm -l /dev/stderr
     1                                  %macro bar 0
     2                                   %ifdirective %note
     3                                    %note foo
     4                                   %endif
     5                                  %endmacro
     6
     7                                  %ifdef __?NASM_IFDIRECTIVE?__
     8                                   bar
     2                              <1>  %ifdirective %note
     3                              <1>  %note foo
     3          ------------------  <1>  note: foo
     4                              <1>  %endif
     9                                  %endif
test$ ~/proj/nasmtest/broken/nasm test3.asm -l /dev/stderr
     1
     2                                  %ifdef __?NASM_IFDIRECTIVE?__
     3                                   %if %isdirective(%note)
     4                                    %note foo
     4          ------------------       note: foo
     5                                   %endif
     6                                  %endif
test$