Bug 87677 - Disassembly from core files doesn't work
Summary: Disassembly from core files doesn't work
Status: CLOSED RAWHIDE
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: gdb   
(Show other bugs)
Version: 9
Hardware: All Linux
medium
medium
Target Milestone: ---
Assignee: Elena Zannoni
QA Contact: Jay Turner
URL:
Whiteboard:
Keywords:
Depends On:
Blocks: 85605
TreeView+ depends on / blocked
 
Reported: 2003-04-01 04:53 UTC by Elena Zannoni
Modified: 2015-01-08 00:04 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2003-04-04 18:10:43 UTC
Type: ---
Regression: ---
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CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description Elena Zannoni 2003-04-01 04:53:06 UTC
Description of problem:
When reading a core file, the 'disassemble' command doesn't work, while the 'x'
command works fine.  If you run the code inside gdb you get the correct disass
output.

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


How reproducible:


Steps to Reproduce:

Take a RHL9 install and compile:

#include <string.h>
int
main (void)
{
  stpcpy (NULL, "dd");
  return 0;
}


Nothing special about stpcpy, it's a function gcc has no inlines for.
Now run it and create a core (ulimit -c unlimited is your friend).
Finally start gdb with the core file and run "disass".  The result:

(gdb) disass
Dump of assembler code for function stpcpy:
0x4207be30 <stpcpy+0>:  Cannot access memory at address 0x4207be30



Actual results:


Expected results:


Additional info:

Comment 1 Elena Zannoni 2003-04-04 18:10:43 UTC
This was a problem in the disassembly command:

--- gdb+dejagnu-20021129/gdb/disasm.c.1 Mon Mar 31 22:33:18 2003
+++ gdb+dejagnu-20021129/gdb/disasm.c   Mon Mar 31 22:35:53 2003
@@ -360,7 +360,8 @@ gdb_disassembly (struct ui_out *uiout,
       if (strcmp (target_shortname, "child") == 0
          || strcmp (target_shortname, "procfs") == 0
          || strcmp (target_shortname, "vxprocess") == 0
-         || strstr (target_shortname, "-threads") != NULL)
+         || strcmp (target_shortname, "core") == 0
+         || strstr (target_shortname, "-thread") != NULL)
        gdb_disassemble_from_exec = 0;  /* It's a child process, read inferior
mem */
       else
        gdb_disassemble_from_exec = 1;  /* It's remote, read the exec file */


Fixed now in gdb-5.3post-0.20021129.29


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