Fatal error a1010 unmatched block nesting

fatal error a1010 unmatched block nesting

unmatched block nesting: A block beginning did not have a matching end, or a block end did not have a matching beginning. One of the following. infback.obj: error LNK2019: unresolved external symbol inflate_fast fatal error A1010:unmatched block nesting: OPEN SSL_wipe_cpu. The "unmatched" part is probably just a anycodings_windows result of the previous error and the anycodings_windows Store PROC line being.

watch the thematic video

How To Solve AutoCAD Fatal Error is (Unhandled Access Violation Reading 0x0) All

The link between the two files of the assembly

I can't afford to hurt, I have been sick for two days, and there are almost no online tutorials. .
Well, first look at the code of main.asm:

include/masm32\include\masm32rt.inc .data? value dd fatal error a1010 unmatched block nesting .data item dd 0 .code start: call main inkey exit main proc cls print "Hello World",13,10 ret main endp end start

The code is bland, and it is a tutorial code. There is no reason to make a mistake. There is no .386. I don’t know who is the default. After compiling it, it works. After helloworld comes out,
write a sub.asm, then link in, the code Same as above. There is
a problem:
sub.obj : error LNK2005: _start already defined in main.obj
sub.obj : error LNK2005: [email protected] already defined in main.obj
main.exe : fatal error LNK1169: one or more multiply defined symbols found
The solution is: remove the start of sub.asm, change main to subproc, and recompile
it. Now helloworld can still be successfully run.
Then, add a public to sub.asm,
which is also possible, and then re-run main, fatal error a1010 unmatched block nesting.
An error occurred when adding extrn to the asm :
main.obj : error LNK2001: unresolved external symbol _vars
main.exe : fatal error LNK1120: 1 unresolved externals
looked at it, and it turned out that my variable name was wrong. . The change to items
succeeded
because in cmd, there is no way to mov ah, 2 and then int 21h, I am afraid it will not work.
Then there is a function, and a public function comes out.
There is a problem:
main.obj : error LNK2001: unresolved external symbol _subproc
main.exe : fatal error LNK1120: 1 unresolved externals
problem with unresolved externals is the same as above, but one problem is that the name is not wrong this time?
Remove the items, no.
Change the .code to .code. There is
a problem with
sub.asm(11) : fatal error A1010: unmatched block nesting : subproc
does not seem to work, fatal error a1010 unmatched block nesting.
Change subproc to near?
It still doesn't work, the same as the error
message. I checked it on the Internet and found a useful proto. Can extrn not work anymore?
It turned out to be a success, fatal error a1010 unmatched block nesting. .
But how to print on the console is a little bit impossible. .
Okay, completely successful.
Then there is the problem of fatal error a1010 unmatched block nesting into lib.
Okay, first of all, a super simple command:

D:\masm32\bin\lib sub.asm
sub.asm : fatal error LNK1136: invalid or corrupt file
I don’t know how to use lib, let’s see how to use it. On the
Internet, it is said that the
solution to lib sub.asm fatal error a1010 unmatched block nesting : use lib sub .obj, fatal error a1010 unmatched block nesting, that is, just change to the obj file.
D:> link main.obj sub.lib
has an error:
LINK: fatal error LNK1221: The subsystem cannot be derived, it must be defined.
Solution: Use the following:
link/sussystem:console main.obj sub.lib
:
LINK: warning LNK4044: unrecognized option "sussystem:console"; ignored
LINK: fatal error LNK1221: a subsystem can't be inferred and must be defined
Solution: I forgot to delete something
but Which of the above problems still remains, and what should I do?
Use the includelib method, add includelib sub.lib to main.sub, and recompile
successfully.
Damn

Okay, let’s summarize how to compile two files into an executable program

  1. Importing sub.asm through include sub.asm is actually copying the code of sub.asm completely in the include position. It has already been imported in the ml and the obj file is generated, so there is no need to add sub.obj in the link.But what should be paid attention to, that is, it should be like writing in a file. You can't quote some files repeatedly, otherwise it will be reported. There is no end, no data segment definition, and no code segment definition, that is For a simple section of function, or a section of data definition, if end appears, then it is obvious that since the main function is placed under end, it will prompt that there is no main definition, that's it

WARNING Duplicate include file windows.inc

Is this error message

Remember to distinguish between upper and lower case, advanced assembly supports case judgment
2. Through public and extrn methods, for variables, public and extrn can be passed, but for functions, only proto (for masm6) can be used and invoked. Function, subroutines are declared first and then called, using proc pseudo-instructions, first-calling and then declared with proto pseudo-instructions, proto tells the compiler that the called subroutine defines the back of this instruction, that is, proto is a declaration pseudo-instructionfatal error a1010 unmatched block nesting, Proc is the definition of pseudo-instructions, 32-bit assembly adds the PROTO-INVOKE combination, which is also compatible with the PROC-CALL combination. In addition, another important function of proto is to specify the external process of the program. By default, MASM makes all processes The public attribute, which allows them to be called by any other module in the same program, can be overridden by using the qualifier private later. . Far away, for two obj links, sub.asm is like a more independent module at this time. It has its own data, fatal error a1010 unmatched block nesting, code, plus an end without an identifier. The advantage of using obj is that it can Define data and code at the same time, and the independence is stronger, it can include other files by itself, but when linking, you need to point both files at the same time, and the first obj file will generate an exe file.
3. Through the lib library, fatal error a1010 unmatched block nesting, the reason why sub.asm is compiled into a lib library is because the lib library is a binary file, which is not only confidential, but also very smart when included

Introduction

There seems to be quite a bit of puzzle on how to get HTTPd compiled and running on Win64. A quick Google search gives you about three or four relevant results with not so accurate content.

These steps I'm providing here has been tested primarily on Windows 7 Professional x64 and is known to work.

Usually people would suggest you to get Visual Studio 2008 with Windows SDK 6.1 installed before, Visual Studio 2008 would be required if you're looking to debug the sources. Although if you're just looking to get the binaries compiled you'll be satisfied with just partially Windows SDK 6.1.

Entire Windows SDK 6.1 isn't required either but just the Windows Headers and Libraries, the Visual C++ Compilers and Win32 Development Tools.

If you feel like it you'll install everything, else wise just uncheck everything in the Installation Options dialog except those three previous mentioned component.

Next of you'll need a Perl distribution, ActiveState or strawberry works about the same although I prefer strawberry perl which can be found here.

You'll also need a Windows port of awk, GnuWin32 has an excellent package for this located here.

Perl will set up your PATH environment variable correctly, GnuWin32 however will not. If you're familiar with Windows it'll be no task to append the correct path to awk.exe to your PATH, if you're not however familiar with Windows it'll just suffice by running

set PATH="C:\Program Files (x86)\GnuWin32\bin;%PATH%"

Replace C:\Program Files (x86)\GnuWin32\ with the installation path you provided during the installation, this is however default so if you didn't change anything this'll work just fine for you.

Lastly we (of course) need the sources.

The sources we're required to have are for HTTPd, Zlib and OpenSSL.

Each and all can be obtained from

If you don't have a archive manager that is capable of extracting tar / gzip files there's an excellent open source solution called 7-zip (which also has a CLI client if you wish to automate this procedure).

First, untar HTTPd to a location of your choice. Just try to avoid any non ASCII characters and white-spaces in the location URI since this can sometimes cause trouble with CLI commands if a string is not slashed or quoted correctly to fit with this.

Let's just assume for now that you extracted the sources to C:\, leaving the source tree in C:\httpd-2.2.17.

Next you'll want to extract the zlib archive to C:\httpd-2.2.17\srclib and strip the version number from the output folder, leaving just C:\httpd-2.2.17\srclib\zlib. And do the terrors from the clit - 1998 procedure for the openssl archive in the same directory, leaving that source tree in C:\httpd-2.2.17\srclib\openssl.

First of all we need to compile Zlib and OpenSSL since these are dependencies for mod_ssl and mod_deflate, if you don't desire these modules then you can just skip this (I believe but are not sure).

Now, open up your command prompt and run from here

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\bin\vcvarsx86_amd64.bat

You execute vcvarsx86_amd64.bat to obtain necessary environment variables for the toolchain basically. Some would say that you'd be satisfied by just opening Visual Studio 2008 x64 Win64 Command Prompt, although this will discard your previous PATH variables, thus removing perl from the PATH.

You're now inside the source tree of httpd, let's begin compiling Zlib shall we!

Zlib

cd srclib\zlib nmake -f win32\Makefile.msc AS=ml64 LOC="-DASMV -DASMINF -I." OBJA="inffasx64.obj gvmat64.obj inffas8664.obj"

AS=ml64 tells nmake to use ml64 (Macro Assembler x64) as our assembler, -DASMV and -DASMINF are both defines in inffas8664.c which I'm not sure what they actually do.

OpenSSL

cd .\openssl perl Configure VC-WIN64A enable-camellia disable-idea ms\do_win64a.bat nmake -f ms\ntdll.mak

The perl line configures OpenSSL with the Visual C++ Win64 AMD and disables the IDEA algorithm since this is by default disabled in the pre-distributions and really shouldn't be missed, if you do however require this then go ahead and remove disable-idea.

ms\do_win64a.bat creates the makefiles and nmake -f ms\ntdll.mak as you might expect runs the makefile.

Note: If you're compiling OpenSSL 1.0.0d with then you need to create a new empty store.h in inc32\openssl\. I.e:

echo. > inc32\openssl\store.h

HTTPd

Right then! Now we're actually going to compile HTTPd. First of all, since you have perl installed then before the compilation, run

FOR /R %F IN (*.mak *.mk.win) DO perl -pi.bak -e "s/\/MACHINE:X[0-9]*//gi" %F

What this does is that it iterates through the entire source and removes all /MACHINE: tags. Why Apache has chosen to to include these parameters I'll never understand but removing this fixes problems with conflicting machine types.

nmake -f Makefile.win installr

Finally compile and install HTTPd, you can specify INSTDIR= to specify a path of where to install HTTPd as well, also as Win32VC9Build points out you can also specify database bindings by adding DBD_LIST="mysql sqlite" etc. Also as it points out, don't forget to add the libraries and includes from the databases to the INCLUDE and LIB.

Zlib : unresolved external symbol inflate_fast

During Zlib compilation if you encounter something like

infback.obj : error LNK2019: unresolved external symbol inflate_fast referenced in function inflateBack inflate.obj : error LNK2001: unresolved external symbol inflate_fast

This means you have a typo in either -DASMV -DASMINF fatal error a1010 unmatched block nesting your OBJ="inffasx64.obj gvmat64.obj inffas8664.obj" since inflate_fast is defined in inffas8664.c.

Zlib : Cannot open include file 'zutil.h'

If you instead encounter

contrib/masmx64\inffas8664.c(36) : fatal error C1083: Cannot open include file: 'zutil.h': No such file or directory

this means you've missed out on -I. since this basicly tells the compiler to also include header files from current directory (zlib) in which zutil.h is found.

OpenSSL : unmatched block nesting : OPENSSL_wipe_cpu

I have three times encountered

tmp32dll\x86_64cpuid.asm(171) : fatal error A1010:unmatched block nesting : OPEN SSL_wipe_cpu

During nmake -f ms\ntdll.mak, what this originates from I do not know but a good guess is a bug in the asm generation process of the build since this issue is most of the time resolved by just rerunning the command again.

HTTPd : module machine type 'x64' conflicts with target machine 'X86'

This is the exact error you'll encounter if you haven't stripped of those pesky /MACHINE:X86 parameters from all the makefiles.

Redo this step with the line in the Step by Step : HTTPd section.

Masm Odd Errors

Hey guys I have a problem with some code I wrote as an excersize but it won't assemble in MASM 8.0

.686 .model flat,stdcall .stack 4096 .data .code ExitProcess PROTO, dwExitCode:DWORD main PROC push 0 call ExitProcess main ENDP ReverseString PROC push ebp mov ebp, esp mov esi, DWORD [ebp + 8] mov edi, fatal error a1010 unmatched block nesting, DWORD [ebp + fatal error a1010 unmatched block nesting push esi call StrLen mov ecx, eax L1: lodsb push al loopnz L1 mov ecx, eax L2: pop al stosb loopnz L2 mov eax, edi pop ebp ret ReverseString ENDP StrLen PROC push ebp mov ebp, esp mov edi, DWORD [ebp + 8] xor eax, eax xor ecx, ecx not ecx repne scasb mov ecx, eax not eax dec eax pop ebp ret StrLen ENDP END main
------ Build started: Project: StringFunctionsMASM, Configuration: Debug Win32 ------ Assembling., fatal error a1010 unmatched block nesting. Assembling: .\Functions.asm .\Functions.asm(1) : error A2044:invalid character in file .\Functions.asm(2) : error A2085:instruction or register not accepted in current CPU mode .\Functions.asm(3) : error A2013:.MODEL must precede this directive .\Functions.asm(4) : error A2013:.MODEL must precede this directive .\Functions.asm(6) : error A2013:.MODEL must precede this directive .\Functions.asm(9) : error Fatal error a1010 unmatched block nesting be in segment block : main .\Functions.asm(11) : error A2034:must be in segment block .\Functions.asm(12) : error A2034:must be in segment block .\Functions.asm(13) : fatal error A1010:unmatched block nesting : main Project : error PRJ0019: A tool returned an error code from "Assembling." Build log was saved at "file://c:\Documents and Settings\********\Mijn documenten\Visual Studio 2008\Projects\ReverseString\Debug\BuildLog.htm" StringFunctionsMASM - 3 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
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Author Topic: Unmatched block nesting  (Read 24536 times)
carlottagp
New Member
*
Posts: 24



My program has the following basic structure:

TITLE       LDA
.MODEL          SMALL
.STACK      200h
.DATA

(data)

.CODE

mov   AX,@DATA
mov   DS,AX

LDAB   PROC
 
(code)

Five procedures, each with the xxx PROC,  RET, xxx  ENDP format

ZE:   mov   AX,4C00h
     int   21h

LDAB   ENDP
      END

When I try to assemble it, I get the error message:

LDA.asm (259)   Fatal error A1010: unmatched block nesting: LDAB

All of the procedures function correctly on their own, and in any case that’s
apparently not where my problem is.  Can someone explain the “unmatched
block nesting” comment to me?  Thanks

Michael








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Mark Jones
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Hi Michael, you have one PROC inside another PROC? I could be mistaken but I don't think that is allowed. :)

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carlottagp
New Member
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Posts: 24



Mark,

Thanks for the suggestion.  Actually, I have about eight programs written so far, all of
which have procedures inside the main procedure, and they all work just fine.  In other
words, in the main program I have a number of CALL instructions, each of which invokes
a subroutine with the format I mentioned:  PROC.code.RET.ENDP.

For instance (the smallest subroutine I've written so far)

CRLF   PROC             ;writes CR, LF to file
   mov   AH,40h      
   mov   BX,handle
   mov   CX,2
   mov   DX,offset buffc
   int   21h
   jc   MB
   RET
CRLF   ENDP

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Mark Jones
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Hmm, it sounds like the error message fatal error a1010 unmatched block nesting generated if another PROC is encountered before the previous ENDP, i.e.

MyProc1 PROC
    mov ax,1
MyProc2 PROC
    mov cx,2
    ret
ENDP          ; two procs, which ENDP to use?
    ret 8
ENDP          ; hmmm


Could you try altering the code as follows?

MyProc1:
    mov ax,1
MyProc2:
    mov cx,2
    ret


The procedure label defined by the PROC command should in interchangable with a jump label (they are both converted to an offset at compile-time.) I hope this is what you are after, have fun! ThumbsUp
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carlottagp
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Hello again,

All of my procedures are in the same format as the example I posted; i.e. no CALLs to another
procedure within the one that's running.  I have tried moving all procedures to a point
after the ENDP  END for the main procedure, with no success. Is it possible that there's
a number-of-lines limit problem here?

Not trying to muddy the waters, but could there be a problem with the software I'm
using to assemble my programs?  It came with Kip Irvine's assembly language book.  This
morning I observed, using the CodeView 4.10 that came with it, that a line was skipped
as I was stepping through the program, trying to debug it.  Just an ordinary line, something
like   mov BX, 12h.  It happened again and again. I'm bothered enough to want to go out
and try to find a package of assembly language software.

Thanks again,

Michael

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MichaelW
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I doubt that the problem has anything to do with line length or the tools. The only way I can find to produce an unmatched block nesting error with code like you seem to be describing is to have an overlap between the procedure definitions, as in Mark’s example. IIRC you cannot nest procedures that have a stack frame, and without a stack frame a procedure cannot support parameters or local variables, so under these conditions a procedure is little better than label, so why not just use a label?

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carlottagp
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Posts: 24



Hi, Michael,

I am interested in your suggestion to use a label instead of a procedure.  .except that I don't see how
to implement the return function at the end of the procedure.  Could you perhaps illustrate the idea by
showing me how to write the CRLF subroutine I quoted earlier?  At the moment I just CALL the procedure
when I need to, and this puts the appropriate return address on the stack, to be used when the RET
instruction is encountered.

Incidentally, by shuffling the order in which the subroutines are called Fatal error a1010 unmatched block nesting was able to make the original
program work.  However, CodeView insists that there is a "fatal error" in the program; this is why I wonder
if my assembly-language software, including CV, is flaky.

Thanks,

Michael

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ChrisLeslie
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carlottagp

Your original code should have an "end xxx" directive with an entry label instead of just "end".
You can call or invoke proc from within procs, but if you nest a proc within a proc, the ret instruction will return program flow to the wrong place.
As MichaelW said, it may be appropriate to use simple labels instead of procs in many circumstances if you are not using a stack frame. In this way you will effectively be creating subroutines. For example, the CRLF subroutine could be:

CRLF:
  .data
  labcrlf db 13,10,'$'
  .code
  mov ah,9
  mov dx,offset labcrlf
  int 21h
  ret


where you use "call CRLF".
Or better still in my opinoin is a macro:

CRLF MACRO
  local labcrlf
.data
  labcrlf db 13,10,'$'
  .code
  mov ah,9
  mov dx,offset labcrlf
  int 21h
ENDM

where you just use CRLF in your code.

Regards

Chris
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sinsi
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RIP Bodie 1999-2011



ML will let you have nested PROCs:

proc1 proc
mov eax,eax
proc2 proc
  ret
proc2 endp
ret
proc1 endp

main proc
call proc1
call proc2
ret
main endp

will compile and link no worries.

With your CRLF proc,

CRLF   PROC             ;writes CR, LF to file
   mov   AH,40h     
   mov   BX,handle
   mov   CX,2
   mov   DX,offset buffc
   int   21h
jc   MB
   RET
CRLF   ENDP

jumping out of a PROC is as bad as a BASIC GOTO (a PROC is self-contained
and has one exit point (so I have been told  lol))

ChrisLeslie: using your macro 50 times in a program will scatter 50 times "13,10,$"
through your .data  Eek
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ChrisLeslie
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sinsi,

The problem with the nested proc example that you gave is that any code that may exist in proc1 after the proc2 block will not be executed because proc2's "ret" will cause proc1 to return.

Unfortunately that is correct that when using macros that code, and any data, is repeated upon every invocation. I think it depends on the circumstances and one's preferences whether a macro is the best choice.

Regards

Chris

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sinsi
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Sorry Chris, bad example since proc2 doesn't need to return if proc1 does.
(Too lazy to actually think up some code that works heh heh.)

On that CRLF macro, maybe something like

CRLF MACRO
  IFNDEF str_crlf
    .data
    str_crlf db 13,10,'$'
  ENDIF
  .code
  mov ah,9
  mov dx,offset fatal error a1010 unmatched block nesting int 21h
ENDM

would only define it once?
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ChrisLeslie
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Ahh, IFENDEF. That should be an improvement. I havn't used it yet but it sounds useful.

Chris

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MichaelW
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ML will let you have nested PROCs


Yes, but only if the procedures do not have parameters or automatic local variables. If they do, then you will get:

error A2144: cannot nest procedures
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sinsi
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RIP Bodie 1999-2011



Oops redface. We live and learn. In my meagre defense, I have never used nested PROCs in ASM (I think Delphi treats one as a "local" procedure?).

MichaelW, I am curious as to what an "automatic local variable" is. I understand a defined local variable but what's an automatic one?
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MichaelW
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By automatic local variable I mean a local variable created with the LOCAL directive. MASM will not return an error if a nested procedure has local variables that were created manually. And my statement was not correct. For a nested procedure with LOCAL and no parameters, MASM returns:

error A2012: PROC, MACRO, or macro repeat directive must precede LOCAL

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