>Number:         25696
>Category:       toolchain
>Synopsis:       Error in gdb during trace
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          support
>Submitter-Id:   net
>Arrival-Date:   Mon May 24 18:47:00 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     zul
>Release:        NetBSD -current
>Organization:
>Environment:
NetBSD Hermes.at.home 2.0E NetBSD 2.0E (HERMES) #0: Mon May 24 20:05:34 CEST 2004  zul@Hermes.at.home:/usr/build_tmp/objdir/sys/arch/i386/compile/HERMES i386
>Description:
It is difficult to describe the problem with precision

when I trace some simple program using gdb, gdb prints the following message
Error accessing memory address 0x........: Invalid argument.

It seems that the issue appears after the first function call.
For some more complex code, gdb seems to run fine, but it depends a lot of the code . I don't have any idea about the difference between the code frome the point of view of gdb :(.
>How-To-Repeat:
cat test.c

#include <stdio.h>

void affiche(char * str) { printf("%s\n"),str); }

int main() {
   char foo[]="Hello world!"; 
    affiche(foo);
     return 0;
}

gcc -g test.c -o test

./test
Hello world!

gdb test
break  affiche
run
Breakpoint 1, affiche (str=Error accessing memory address 0xbfbfe890: Invalid argument.
n
) at test.c:6Error accessing memory address 0xbfbfe86c: Invalid argument.
n
Single stepping until exit from function printf, 
which has no line number information.
0x08048458 in init_fallthru ()
n
Single stepping until exit from function init_fallthru, 
which has no line number information.
Error accessing memory address 0xbfbfe864: Invalid argument.
n
...







>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: