[Bug gdb/28621] New: Watchpoint followed by catchpoint misreports watchpoint

[Bug gdb/28621] New: Watchpoint followed by catchpoint misreports watchpoint

[pedro at palves dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=28621

            Bug ID: 28621
           Summary: Watchpoint followed by catchpoint misreports
                    watchpoint
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: pedro at palves dot net
  Target Milestone: ---

If GDB reports a watchpoint hit, and then the next event is a catchpoint, GDB
mistakenly tells the user that the watchpoint triggered.

Vis, using foll-fork.c:

  (gdb) start
  ...
  (gdb) awatch v
  Hardware access (read/write) watchpoint 2: v
  (gdb) catch fork
  Catchpoint 3 (fork)
  (gdb) c
  Continuing.

  Hardware access (read/write) watchpoint 2: v

  Old value = 0
  New value = 5
  main () at gdb.base/foll-fork.c:16
  16        pid = fork ();
  (gdb)
  Continuing.

  Hardware access (read/write) watchpoint 2: v      <<<<
                                                    <<<< these lines are
spurious
  Value = 5                                         <<<<

  Catchpoint 3 (forked process 1712369), arch_fork (ctid=0x7ffff7fa4810) at
arch-fork.h:49
  49      arch-fork.h: No such file or directory.
  (gdb)

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[Bug gdb/28621] Watchpoint followed by catchpoint misreports watchpoint

[pedro at palves dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=28621

Pedro Alves <pedro at palves dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at sourceware dot org   |pedro at palves dot net

--- Comment #1 from Pedro Alves <pedro at palves dot net> ---
I've got a patch.

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[Bug gdb/28621] Watchpoint followed by catchpoint misreports watchpoint

[pedro at palves dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=28621

Pedro Alves <pedro at palves dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #2 from Pedro Alves <pedro at palves dot net> ---
Fix merged:

commit d37e084783a04c63ae137f953ebdb58bb6f7f704
Author:     Pedro Alves <pedro@palves.net>
AuthorDate: Tue Nov 23 14:19:07 2021 +0000
Commit:     Pedro Alves <pedro@palves.net>
CommitDate: Mon Mar 21 17:27:17 2022 +0000

    Watchpoint followed by catchpoint misreports watchpoint (PR gdb/28621)

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