Bug 62981 - misused option causes segfault
Summary: misused option causes segfault
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: patch   
(Show other bugs)
Version: 7.2
Hardware: i686
OS: Linux
Target Milestone: ---
Assignee: Tim Waugh
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2002-04-08 21:13 UTC by Peter Bieringer
Modified: 2007-04-18 16:41 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2002-04-09 13:36:18 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Peter Bieringer 2002-04-08 21:13:28 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.78 [en] (X11; U; Linux 2.4.17-0.18 i686)

Description of problem:
Loks like option handling isn't proper

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
$ patch -V test
Segmentation fault

$ patch -v
patch 2.5.4

Expected Results:  Not a segfault

Additional info:

Comment 1 Tim Waugh 2002-04-09 13:19:42 UTC
This boils down to the following test case:   
char program_name[] = "patch";   
#include <stdio.h>   
extern char *program_name;   
int main ()   
        fprintf (stderr, "%s\n", program_name);   
which also segfaults.  Jakub, is there any chance this is a compiler problem?

Comment 2 Jakub Jelinek 2002-04-09 13:36:13 UTC
No, it is a common programming bug.
char program_name[] = "patch";
is not equal to
char *program_name = "patch";
in C, likewise
extern char program_name[];
is not equal to
extern char *program_name;
The two must agree.
in the former case program_name symbol points to 'p' letter in "patch", in the
latter case program_name symbol points to a pointer which points to "patch".

Comment 3 Tim Waugh 2002-04-09 13:42:56 UTC
Okay, thanks.  Fixed package is 2.5.4-12.

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