Bug 65814

Summary: gdb misses breakpoint when compiled with gcc 3.1
Product: [Retired] Red Hat Linux Reporter: eeeg
Component: gdbAssignee: Trond Eivind Glomsrxd <teg>
Status: CLOSED NOTABUG QA Contact: Aaron Brown <abrown>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.3   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2002-06-04 01:49:25 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description eeeg 2002-05-31 22:22:39 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020408

Description of problem:
In the attached code gdb misses a breakpoint when compiled with gcc3.1.    When
compiled with gcc2.96 the breakpoint is not missed.

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


How reproducible:
Always

Steps to Reproduce:
1. compile attached file with gcc3.1 (e.g., g++ -g -o random random_int.cc)
2. gdb random
3. put a breakpoint in at line 18 and let it run
4. gdb misses breakpoint

	

Actual Results:  Here is what happens when compiled with gcc3.1

$ /usr/gnu/gcc-3.1/bin/g++ --version
g++ (GCC) 3.1
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ /usr/gnu/gcc-3.1/bin/g++ -o random.gcc31 -g random_int.cc
$ gdb random.gcc31
GNU gdb Red Hat Linux (5.1.90CVS-5)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux"...
(gdb) b 18
Breakpoint 1 at 0x8048583: file random_int.cc, line 18.
(gdb) run
Starting program: /home/eeeg/econ/tmp/random.gcc31

Program exited normally.
(gdb) quit
$

When compiled with gcc2.96 we get

$ g++ --version
2.96
$ g++ -o random.gcc296 -g random_int.cc
$ gdb random.gcc296
GNU gdb Red Hat Linux (5.1.90CVS-5)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux"...
(gdb) b 18
Breakpoint 1 at 0x8048576: file random_int.cc, line 18.
(gdb) run
Starting program: /home/eeeg/econ/tmp/random.gcc296

Breakpoint 1, random_int::random_int (this=0x8049848, idum=-2) at random_int.cc:19
19         idum--;
(gdb) quit
The program is running.  Exit anyway? (y or n) y
$


Expected Results:  stop at breakpoint when compiled with 3.1

Additional info:
Comment 1 eeeg 2002-05-31 22:24:03 UTC 
Created attachment 59167 [details]
code
Comment 2 eeeg 2002-06-04 01:49:19 UTC 
I thought my summary of the problem was poorly worded.  I should have written 
'gdb misses breakpoint on code compiled with gcc 3.1' 
 
Similarly, in the problem description, I should have written 'In the attached 
code gdb misses a breakpoint when the attached code is compiled with gcc3.1.    
When the attached code is compiled compiled with gcc2.96 the breakpoint is not 
missed.' 
 
Apologies
Comment 3 Trond Eivind Glomsrxd 2002-06-04 14:37:42 UTC 
Use "-gstabs" if you want to use this compiler - gcc 3.1 has a new debug format.