From owner-bug-octave at bevo dot che dot wisc dot edu  Thu Oct 26 14:45:38 1995
Subject: gets SIGSEGV after help<CR><CR><CR>
From: Mirsad Todorovac <tm at rasips2 dot rasip dot etf dot hr>
To: bug-octave at che dot utexas dot edu
Date: Thu, 26 Oct 1995 20:43:15 +0100

Bug report for Octave 1.1.1 configured for sparc-sun-sunos4.1.1

Description:
-----------

	While compiling with gcc 2.7.0 I had complaints about:
	a) for (int i; ... ) { scope
		avoided with -fno-for-scope
	b) private constructors
		avoided with -fno-access-control
	c) obfuscated definitions in <cstring.h> header file.
	   Including this file from test C++ source induced no errors
	   I used -D__CSTRING__ to bypass this lines, only on this
	   files that made problems.

Repeat-By:
---------

	Install octave.
	Pass "make -k".
	Pass "make -k CXXFLAGS='-g -O2 -fno-for-scope -fno-access-control'"
	Pass "make -k    "   "   "  -D__CSTRING__"

	After this, octave is installed.  I don't have DejaGNU yet, but
	installation in course.
	Note:  Allthough all definitions had -g (checked visually while
	       compiling), dbx and gdb complain about 'no symbols' !!?!??!

	Now, start octave:
		octave:1> help
		[press enter few times for help to end]
		octave:2> <CR>
		octave:2> <CR>
		Segmentation fault .... { caught by internal handler,
					  occasionally dumps core, if the
					  weather is good and the moon is
					  rising ... :) }

Fix:
---

	For problem with "in <for> defined variable's scope" refer to
	g++.FAQ in libg++7.0.  Option '-fno-for-scope' is mentioned
	there and only there.  GNU info gcc and man are silent.  It should
	not affect final result, but I recommend some #ifdef's around
	such definitions, so it would work both with gcc-2.5.8 and
	gcc-2.7.x .  You may be aware that now variable defined in for
	has scope until the end of the for's body, and that's final now!
	It's standard and it's ANSI/ISO and it's only few lines of code
	to be modified.

	Make your constructors public.  That's a way to allow constructing
	such object in arbitrary place.  More details and (GNU) make output
	on demand.

	Because of fantomly disapeared symtable, I'm not able to help any
	further.  Hope info about for scope helps at least, but I'm sure
	you know it allready.

	-------------------------
	I've installed awfull lot of other programs to get octave on the
	track, and I'm now anxious to see it working... It's five days
	of compiling and 'make distclean'-ing already!! HELP!


Configuration (please do not edit this section):
-----------------------------------------------

uname output:     SunOS rasips2 4.1.1 3 sun4c
Fortran compiler: g77
FFLAGS:           -O
F2C:              
F2CFLAGS:         
FLIBS:            -lf2c -L/usr/local/lib/gcc-lib/sparc-sun-sunos4.1.1/2.7.0 -L/usr/local/lib -lgcc
C compiler:       gcc
CFLAGS:           -DHAVE_CONFIG_H  -O2 -g
C++ compiler:     c++
CXXFLAGS:         -DHAVE_CONFIG_H  -fno-implicit-templates  -O2 -g
LDFLAGS:          -s
DEFS:

  -DOCTAVE_SOURCE=1 -DSEPCHAR=':' -DSEPCHAR_STR=: -DNPSOL_MISSING=1
  -DQPSOL_MISSING=1 -DFSQP_MISSING=1 -DHAVE_STRFTIME=1 -DSIZEOF_SHORT=2
  -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DWORDS_BIGENDIAN=1 -DIEEE_BIG_ENDIAN=1
  -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DF77_APPEND_UNDERSCORE=1
  -DHAVE_ASSERT_H=1 -DHAVE_FLOAT_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1
  -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_VARARGS_H=1
  -DHAVE_UNISTD_H=1 -DHAVE_FLOATINGPOINT_H=1 -DHAVE_SYS_UTSNAME_H=1
  -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_FCNTL_H=1 -DHAVE_SYS_TTOLD_H=1
  -DHAVE_SYS_RESOURCE_H=1 -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1
  -DHAVE_TERMIOS_H=1 -DHAVE_SETVBUF=1 -DHAVE_GETCWD=1
  -DHAVE_GETHOSTNAME=1 -DHAVE_BZERO=1 -DHAVE_BCOPY=1 -DHAVE_RINDEX=1
  -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_STRICMP=1 -DHAVE_STRNICMP=1
  -DHAVE_STRCASECMP=1 -DHAVE_STRNCASECMP=1 -DHAVE_ON_EXIT=1
  -DHAVE_TEMPNAM=1 -DHAVE_PUTENV=1 -DHAVE_GETTIMEOFDAY=1
  -DHAVE_GETRUSAGE=1 -DHAVE_LIBM=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1
  -DHAVE_ISINF=1 -DHAVE_INFINITY=1 -DHAVE_QUIET_NAN=1 -DH