03-28-2019
Further, doing things you didn't ask the compiler to do is begging for trouble. The compiler loves to remove things you "don't use", to the point that if you never touch a variable in your program, it might optimize it away completely and use hardcoded values instead. You have to make these variables 'volatile' to force the compiler to not do anything smart and helpful for you.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
hello all,
I tried a program on an array to intialise array elements from the standard input device.it is an integer array of 5 elements.but after entering the 4th element it throws a message called "Segmentation Fault" and returns to the command prompt without asking for the 5th element.
... (3 Replies)
Discussion started by: compbug
3 Replies
2. AIX
Hello,
I am running on a AIX5.2 server with Oracle 10g and 9i. My code compiles and works fine in 32-bit mode. The
same code compiles in 64-bit and runs good. The program catches CNTRL-C signal to terminate. Only on 64-bit code
when i hit CNTRL-C, the program exits with segmentation... (0 Replies)
Discussion started by: sumesh0710
0 Replies
3. UNIX for Dummies Questions & Answers
The java program is a part of speech tagger -> The Stanford NLP (Natural Language Processing) Group
The goal is to use this script as part of a webpage to tag parts of speech based on a user-inputted string.
I have no idea what to do with the files - I'm a complete *nix noob. I tried running... (4 Replies)
Discussion started by: tguillea
4 Replies
4. Programming
I'm getting a segmentation fault. I'm new to Linux programming. Thanks so much for all of your input.:eek:
#include </usr/include/mysql++/mysql++.h>
#include <stdio.h>
#include <iostream>
#include <sstream>
#include <string.h>
using namespace std;
int outputToImport(const char*... (1 Reply)
Discussion started by: sepoto
1 Replies
5. Programming
Hi Friends,
I have written a small code in C which performs the below operations
Task : 1 ) read line by line from a file.
2 ) assuming 3th and 4th fields of the file as GN and GNTO
3 ) The target file should contain all the fields except GNTO.
4... (3 Replies)
Discussion started by: kiran_bhatter
3 Replies
6. UNIX for Advanced & Expert Users
What does this mean and why is this happening?
$ ps -ef | grep ocular
Segmentation fault (core dumped)
$ ps -ef | grep ocular
Segmentation fault (core dumped)
$ ps aux | grep ocular
Segmentation fault (core dumped)
$ ps
Segmentation fault (core dumped)
$ pkill okular
$ ps... (1 Reply)
Discussion started by: cokedude
1 Replies
7. Programming
I use a binary name (ie polo) it gets some parameter , so for debugging normally i do this :
i wrote script for watchdog my app (polo) and check every second if it's not running then start it , the problem is , if my app , remain in state of segmentation fault for a while (ie 15 ... (6 Replies)
Discussion started by: pooyair
6 Replies
8. Programming
#include<stdlib.h>
#include <pthread.h>
#include "tlpi_hdr.h"
#include <stdio.h>
static volatile int glob = 0;
static struct {
pthread_t t1,t2;
} *thread;
static void * /* Loop 'arg' times incrementing 'glob' */
threadFunc(void *arg)
{
int loops = *((int *) arg); ... (1 Reply)
Discussion started by: fwrlfo
1 Replies
9. Solaris
Hi Guys,
I just installed and booted a zone called testzone. When I logged in remotely and tried changing to root user I get this error:
"Segmentation fault"
Can someone please help me resolve this?
Thanks alot (2 Replies)
Discussion started by: cjashu
2 Replies
10. Programming
Oddities with gcc, 2.95.3 for the AMIGA and 4.2.1 for MY current OSX 10.14.1...
I am creating a basic calculator for the AMIGA ADE *NIX emulator in C as it does not have one.
Below are two very condensed snippets of which I have added the results inside the each code section.
IMPORTANT!... (11 Replies)
Discussion started by: wisecracker
11 Replies
LEARN ABOUT REDHAT
mpif77
HF77(1) LAM TOOLS HF77(1)
NAME
hf77, mpif77 - Compile LAM FORTRAN programs.
SYNTAX
hf77 [-showme] ...
see f77(1) (or whatever your underlying FORTRAN compiler is) for all other options.
DESCRIPTION
hf77 is a convenience wrapper for the local native FORTRAN compiler. Translation of a LAM program requires the linkage of the LAM essen-
tial services libraries which may not reside in one of the standard search directories of ld(1). hf77 passes its arguments along to the
local native FORTRAN compiler along with the -L and -l options required by LAM/MPI programs. This includes all necessary options for ROMIO
and/or C++ bindings support (if ROMIO/C++ support was included when LAM was compiled).
mpif77 is now the same as hf77. See the NOTES section, below.
By default, hf77 uses the FORTRAN compiler that was selected when LAM was configured (with the --with-fc flag to ./configure) as the local
native FORTRAN compiler, but this can be overridden by the LAMHF77 environment variable.
OPTIONS
-showme
Does not invoke the underlying FORTRAN compiler. Instead, it shows the command line that would be executed to compile the FORTRAN
program.
NOTES
Previous versions of hf77 did not automatically link in the MPI library. Starting with LAM version 6.3, since hf77 has become the de facto
LAM FORTRAN compiler, the -lmpi option is now automatically passed to the underlying compiler when linking LAM/MPI programs.
Previous versions of LAM included the mpif77 wrapper script to automatically pass -lmpi to hf77. This script is now obsolete since hf77
now includes -lmpi automatically. mpif77 is now a symbolic link to hf77 to ensure backward compatibility.
SEE ALSO
f77(1), ld(1), lam-helpfile(1)
LAM 6.5.8 November, 2002 HF77(1)