Slackware Update - v2.0 to v2.1

Slackware Update - v2.0 to v2.1

Post by Brian Ang » Fri, 07 Oct 1994 08:25:09



Hi,

Is there an update procedure (perhaps via a single pkgtool kit) which can
be used to upgrade my Slackware 2.0 Pro installation to 2.0.1.  I have updated
several bits of the O/S manually, but it would be nice to get all the
miscellaneous bug fixes and enhancements at one time instead of chasing them
down and updating the components individually.  Any comments?

Brian

 
 
 

Slackware Update - v2.0 to v2.1

Post by Maxim Spiv » Sat, 08 Oct 1994 04:11:49




>Hi,

>Is there an update procedure (perhaps via a single pkgtool kit) which can
>be used to upgrade my Slackware 2.0 Pro installation to 2.0.1.  I have updated
>several bits of the O/S manually, but it would be nice to get all the
>miscellaneous bug fixes and enhancements at one time instead of chasing them
>down and updating the components individually.  Any comments?

I think this would be a great idea! Over the summer, I got my system
running pretty well, so I definitely wouldn't want to reinstall when/if
Slackware 2.5 came out. However, the enhancements/bugfixes would be nice,
esp in a pkgtool kit. Patrick?

Max

--
**************************************************************************
Maxim Spivak                            |  #include <GoBears.h>
University of California, Berkeley      |  #include <StdDisclaimer.h>


 
 
 

1. IO Overflow via putc() in GCC v2.6.3, Slackware v2.x Linux v1.2.11

I'm getting a segmentation fault when running a program compiled by gcc
(v2.6.3 i486-linux-aout) using 'gcc -o sor -I. -Ih -g sor.c' on a 486 which
has 16 MB RAM, all scsi, and running Linux v1.2.11 based on the Slackware
v2.2/v2.3 distribution (I know, I know, I'm planning on upgrading RSN :-).

The Slackware v2.3 distribution was missing the g++ include files so I
snarfed that binary package ('disk') from the Slackware v2.3 archive on
ftp.cdrom.com and installed that.

The problem is a segmentation fault (gdb output):
[...]
Program received signal SIGSEGV, Segmentation fault.
I've not had this problem with any other programs that I've built with this
setup.  0x1d323 in _IO_file_overflow (f=0x65d00, ch=9) at fileops.c:350
fileops.c:350: No such file or directory.
(gdb) bt
#0  0x1d323 in _IO_file_overflow (f=0x65d00, ch=9) at fileops.c:350
#1  0x1b71a in __overflow (f=0x65d00, ch=9) at genops.c:160
[[I assume those first two are in the C/C++ library]]

#2  0x1cd1c in putc (c=9, stream=0x65d00) at putc.c:11
[[That's a function because I tried forcing the use of the function putc
rather than the macro but it makes no difference.]]

#3  0x15ff7 in dumpAction (
    s=0x66c03 "\n   SymbolTable* _current;", ' ' <repeats 13 times>, "// most current symbol table\n   AST* _currClass;", ' ' <repeats 19 times>, "// current class, for recurs. detect\n   RWTPtrDlist<ErrorMsg>* _errorList;  // errorMsgs owned"..., output=0x65d00, tabs=1, file=-1, line=0, final_newline=1) at gen.c:906
[[This is in the actual 'sor' program.  The string is a few hundred bytes
long.  See the print below...]]

#4  0x1a9c8 in GenCPPClassHeader () at cpp.c:94
#5  0x109c6 in main (argc=3, argv=0xbffffb2c) at main.c:311

(gdb) printf "%500s", s

SymbolTable* _current;             // most current symbol table
AST* _currClass;                   // current class, for recurs. detect
RWTPtrDlist<ErrorMsg>* _errorList;  // errorMsgs owned by Linker!

void initialize();
void initScope(AST* n);
void initFuncScope(AST* n);
void addUnique(AST* id,AST* n);
void addNonUnique(AST* id,AST* n);
void addConstructor(AST* id,AST* n);
void addInheritedScopes(AST* classNode, AST* nteList);
RWTPtrDlist<ErrorMsg>* errorList()  { return _errorList; }
void rptErr(ErrorCode e, AST* n);
void rptErr(ErrorCode e, AST* n, String str);
(gdb)

The application code is pretty simple the offending source line is:
906             if ( *s!='#' ) {TAB;}

where 'TAB' is a macro defined as:
#define TAB     {int i=1; for (;i<=tabs;i++) {putc('\t', output);}}

and 'output' is an argument to dumpAction():
FILE *output

which has been passed 'stdout' by the callers.

I put explicit fflush(output) in the code but that didn't help any either.

I have not had this problem with any of the myriad other programs that I've
built with this system so, I'd really appreciate learning what stupid thing
I'm missing/doing/etc.

Thanks,
        John

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