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* [Bug gdb/26635] New: i386_analyze_prologue doesn't skip endbr32
@ 2020-09-18 23:52 hjl.tools at gmail dot com
  2020-09-18 23:52 ` [Bug gdb/26635] " hjl.tools at gmail dot com
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: hjl.tools at gmail dot com @ 2020-09-18 23:52 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=26635

            Bug ID: 26635
           Summary: i386_analyze_prologue doesn't skip endbr32
           Product: gdb
           Version: unknown
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

[hjl@gnu-cfl-2 gdb]$ cat /tmp/x.c
int
main(void)
{
  return 0;
}
[hjl@gnu-cfl-2 gdb]$ gcc -g -fcf-protection /tmp/x.c -m32
[hjl@gnu-cfl-2 gdb]$ ./gdb ./a.out 
Exception caught while booting Guile.
Error in function "open-file":
No such file or directory: "/usr/local/share/gdb/guile/gdb/boot.scm"
./gdb: warning: Could not complete Guile gdb module initialization from:
/usr/local/share/gdb/guile/gdb/boot.scm.
Limited Guile support is available.
Suggest passing --data-directory=/path/to/gdb/data-directory.
Python Exception <class 'ModuleNotFoundError'> No module named 'gdb': 
./gdb: warning: 
Could not load the Python gdb module from `/usr/local/share/gdb/python'.
Limited Python support is available from the _gdb module.
Suggest passing --data-directory=/path/to/gdb/data-directory.
GNU gdb (GDB) 11.0.50.20200918-git
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./a.out...
(gdb) b main
Breakpoint 1 at 0x8049176: file /tmp/x.c, line 3.
(gdb) r
Starting program:
/export/build/gnu/tools-build/gdb-gitlab/build-x86_64-linux/gdb/a.out 

Python Exception <class 'NameError'> Installation error: gdb._execute_unwinders
function is missing: 
Breakpoint 1, main () at /tmp/x.c:3
3       {
(gdb) disass
Dump of assembler code for function main:
=> 0x08049176 <+0>:     endbr32  <<<<<<<<<<<<  i386_analyze_prologue doesn't
skip endbr32.
   0x0804917a <+4>:     push   %ebp
   0x0804917b <+5>:     mov    %esp,%ebp
   0x0804917d <+7>:     mov    $0x0,%eax
   0x08049182 <+12>:    pop    %ebp
   0x08049183 <+13>:    ret    
End of assembler dump.
(gdb)

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^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-09-20 11:31 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-09-18 23:52 [Bug gdb/26635] New: i386_analyze_prologue doesn't skip endbr32 hjl.tools at gmail dot com
2020-09-18 23:52 ` [Bug gdb/26635] " hjl.tools at gmail dot com
2020-09-19  0:56 ` cvs-commit at gcc dot gnu.org
2020-09-19  0:57 ` hjl.tools at gmail dot com
2020-09-19 23:58 ` cvs-commit at gcc dot gnu.org
2020-09-20 11:31 ` hjl.tools at gmail dot com

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