They are pointers. This is sure. But there is some mistakes in the code I gave before. The assignment should use * before the pointers. I am sorry for carelessness when posted. But when checking with 'while ( *( tr->root->is_done ) )', the same segfault happen. And corresponding pinter address still be 'out of bounds". In my code, such statements exist.
This is a package coded by a previous member. He habits to use such structure for varialbes which control execution. A large package means that it is not easy to change all the strutures of this kind.
What's more, I think this is really a topic worth discusssion.
Quote:
Originally Posted by otheus
"out of bounds" means "invalid memory address". You avoid it by properly mallocing memory before using it.
I hate to say this, but you seem very confused about pointers. I think you need to read a very concise summary on C pointers.
In the code you provide, you are trying to assign values to the address...
You should instead be doing:
And your loop should be:
Also, root itself is a pointer. So you first need to allocate it:
"tr" is also a pointer, and this needs to be allocated too, but I have no idea what kind of structure it is.
Also, this structure is very unusual. I cannot imagine why you want every element to be a pointer to something!
Hi,
I am trying to set up a cron job for every Friday at 6:00 p.m. and got an error:
"/var/tmp/aaaa29638" 1 line, 73 characters
00 18 00 0 5 /app/test/backup.ksh
crontab: error on previous line; number out of bounds.
Any ideas?
Thanks! (1 Reply)
Hello, sorry if this has been posted before but i was wondering if there is a way to run a program until a segmentation fault is found.
Currently i'm using a simple shell script which runs my program 100 times, sleeps 1 second because srand(time(0)) is dependent on seconds. Is there a possible... (1 Reply)
We have a Solaris 8 server which users login to via VNC to get a desktop. On that desktop these users use Netscape Communicator 4.9 to access a very important mail account. Unfortunately Netscape has started segfaulting regularly.
Does anyone have any ideas how I can try to find out what point... (1 Reply)
Hello everyone,
I'm writing a program using the id3lib unfortunately I've encountered with memory issue that cause segmentation fault. I tried to rerun and analyze the program with valgrind but it doesn't point me anywhere. I really stuck on this one.
Valgrind output:
==14716== Invalid read of... (2 Replies)
I have a program that allows users to specify the debug log file location and name.
I have tried using the access() and stat() but they both segfault if the drive say (d:\) is invalid. Both seem to be fine if the drive exists.
Could someone please point me in the direction to a function that... (1 Reply)
hello all,
my question is not about How code can be rewritten, i just wanna know even though i am not using read only memory of C (i have declared str) why this function gives me segfault :wall:and the other code executes comfortably though both code uses same pointer arithmetic.
... (4 Replies)
Hi,
I've been trying to filter a file which has several repetitions of lines which looks as follows:
('hello
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blabla
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Another project, another bump in the road and another chance to learn. I've been trying to open gzipped files and parse data from them and hit a snag. I have data in gzips with a place followed by an ip or ip range sort of like this:
Some place:x.x.x.x-x.x.x.x
I was able to modify some code... (6 Replies)
What exactly is the -Warray-bounds option to the GCC compiler supposed to warn about?
the man page states:
~ g++ --version
g++ (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2)
Copyright (C) 2017 Free Software Foundation, Inc.Thank you. (14 Replies)
Discussion started by: milhan
14 Replies
LEARN ABOUT HPUX
uildumpsymboltable
UilDumpSymbolTable(library call) UilDumpSymbolTable(library call)
NAME
UilDumpSymbolTable -- Dumps the contents of a named UIL symbol table to standard output
SYNOPSIS
#include <uil/UilDef.h>
void UilDumpSymbolTable(
sym_entry_type *root_ptr);
DESCRIPTION
The UilDumpSymbolTable function dumps the contents of a UIL symbol table pointer to standard output.
root_ptr Specifies a pointer to the the symbol table root entry. This value can be taken from the parse_tree_root part of the Uil_com-
pile_desc_type data structure returned by Uil.
By following the link from the root entry, you can traverse the entire parse tree. Symbol table entries are in the following format:
hex.address symbol.type symbol.data prev.source.position source.position modification.record
where:
hex.address
Specifies the hexadecimal address of this entry in the symbol table.
symbol.type
Specifies the type of this symbol table entry. Some possible types are root, module, value, procedure, and widget.
symbol.data
Specifies data for the symbol table entry. The data varies with the type of the entry. Often it contains pointers to other symbol
table entries, or the actual data for the data type.
prev.source.position
Specifies the end point in the source code for the previous source item.
source.position
Specifies the range of positions in the source code for this symbol.
The exact data structures for each symbol type are defined in the include file UilSymDef.h. Note that this file is automatically included
when an application includes the file UilDef.h.
RELATED Uil(3)
UilDumpSymbolTable(library call)