GCC ver 3.4.6

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Question on Redhat ver.6 RPM's

Hi, Using Redhat version 6.0, I need nmap so I have downloaded. But it requires many other dependencies, when I try to install it. See below err.msg. Is there any other way to get this installed, or I need to download each of the dependencies. rpm -Uhv nmap-5.51-2-mdv2011.0.x86_64.rpm...

2. Solaris

Installing gcc - recieve error message gcc : cannot execute

AIM- Install Oracle 11g on Solaris using VMWare Steps 1.Logged on as root 2.Created subfolders � /usr/local/bin & /usr/local/bin/gcc 3.Downloaded gcc & libiconv & unzipped them on my harddrive & burnt them on CD 4.Copied files from CD to /usr/local/bin/gcc 5.Terminal (root) � pkgadd -d...

3. Solaris

SOLARIS/BEA WEBLOGIC ver.8.1

Hello all, I am having a little issue with BEA webloigc server Version 8.1, previously, we we confugred we where able to Grep processes for BEA and we could get the processes listed now I am only able to see the start weblogic script process. the weblogic server is up and running and performing its...

4. Solaris

Prtdiag is Not working in Solaris 8 Ver

Hello Guys, :confused: I have tried Up to my Levels pls help me if u know any solution Pls look out the following O/P, Log Messages ================================================= SUN> pwd /usr/platform/SUNW,Sun-Fire-V240/sbin SUN> SUN> SUN> prtdiag -v bash: prtdiag: command not...

5. UNIX for Dummies Questions & Answers

USB support in what ver. HP-UX

Can someone clue me in as to what version of HP-UX did USB support start? Specifically mass storage support. We have serveral HP Visualize systems and would like to connect up an external USB drive to do backups.

6. Debian

what is the best linux ver for p100 16 ram

Hello all i own p100 16ram laptop , i would like to run linux on it i need it for gcc compilation and shell scripting , no gui. what version of linux should i install , i dont mind to install old one . tnx allot

7. Programming

strncpy(ver, buffer2 +5,2);

Hi, Can someone help me understand this code? strncpy(job, buffer2,5); strncpy(ver, buffer2 +5,2); Thanks for all the help!

8. UNIX for Advanced & Expert Users

X25 on Tru UNIX ver 5

How do i set up X25 protocol on version 5 of Tru Unix (Compaq). I have manged to do it using version 4. What are the major differences.:confused:

9. Cybersecurity

BIND Ver. 8

Hi everyone I'm a HPUX system admin, and need some help. Our organisation is full of red tape and managers like that like to hold many meetings but take little action. I need to persuade my line manager that we should move our two nameservers onto BIND 8. Can anyone please point me to some...

LEARN ABOUT CENTOS

error::dwarf

ERROR::DWARF(7stap)													       ERROR::DWARF(7stap)

NAME

       error::dwarf - dwarf debuginfo quality problems

DESCRIPTION

       Systemtap  sometimes  relies  on  ELF/DWARF  debuginfo  for  programs being instrumented to locate places to probe, or context variables to
       read/write, just like a symbolic debugger does.	Even though examination of the program's source code may show  variables  or  lines  where
       probes  may  be desired, the compiler must preserve information about them for systemtap (or a debugger such as gdb) to get pinpoint access
       to the desired information.  If a script requires such data, but the compiler did not preserve enough of it, pass-2 errors may result.

       Common conditions that trigger these problems include;

       compiler version
	      Prior to GCC version 4.5, debuginfo quality was fairly limited.  Often developers were advised to build their programs with  -O0	-g
	      flags  to disable optimization.  GCC version 4.5 introduced a facility called "variable-tracking assignments" that allows it to gen-
	      erate high-quality debuginfo under full -O2 -g optimization.  It is not perfect, but much better than before.   Note  that,  due	to
	      another gcc bug (PR51358) -O0 -g can actually sometimes make debuginfo quality worse than for -O2 -g.

       function inlining
	      Even  modern gcc sometimes has problems with parameters for inlined functions.  It may be necessary to change the script to probe at
	      a slightly different place (try a .statement() probe, instead of a .function() probe, somewhere a few source lines into the body	of
	      the inlined function.  Or try putting a probe at the call site of the inlined function.  Or use the if @defined($var) { ... } script
	      language construct to test for the resolvability of the context variable before using it.

       instruction reordering
	      Heavily optimized code often smears the instructions from multiple source statements together.  This can	leave  systemtap  with	no
	      place  to choose to place a probe, especially a statement probe specified by line number.  Systemtap may advise to try a nearby line
	      number, but these may not work well either.  Consider placing a probe by a statement wildcard or line number range.

ALTERNATIVES

       In order to reduce reliance on ELF/DWARF debuginfo, consider the use of statically compiled-in instrumentation, such as kernel tracepoints,
       or <sys/sdt.h> userspace markers.  Such instrumentation hook sites are relatively low cost (just one NOP instruction for sdt.h), and nearly
       guarantee the availability of parameter data and a reliable probe site, all without reliance on debuginfo.

SEE ALSO

       stap(1),
       http://dwarfstd.org/,
       http://sourceware.org/systemtap/wiki/TipContextVariables,
       http://gcc.gnu.org/wiki/Var_Tracking_Assignments,
       warning::debuginfo(7stap),
       error::reporting(7stap)

															       ERROR::DWARF(7stap)

HP-UX