Discussion:
[PATCH][PR python/23714] Make command-repeat work after gdb.execute
Benno Fünfstück
2018-11-21 14:48:56 UTC
Permalink
Since commit

56bcdbea2bed ("Let gdb.execute handle multi-line commands")

command repetition after using the `gdb.execute` Python function
fails (the previous command is not repeated anymore). This happens
because read_command_lines_1 sets dont_repeat, but the call to
prevent_dont_repeat in execute_gdb_command is later.

The fix is to move the call to prevent_dont_repeat to the beginning of
the function.

Tested on my laptop (ArchLinux-x86_64)

gdb/ChangeLog:

PR python/#23714
* gdb/python/python.c (execute_gdb_command): call prevent_dont_repeat
earlier to avoid affecting dont_repeat

gdb/testuite/ChangeLog:

PR python/#23714
* gdb.python/python.exp: Test gdb.execute("show commands").
---
gdb/python/python.c | 3 ++-
gdb/testsuite/gdb.python/python.exp | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
Pedro Alves
2018-11-21 17:12:12 UTC
Permalink
Hi,

Thanks for the patch.
Post by Benno Fünfstück
PR python/#23714
* gdb.python/python.exp: Test gdb.execute("show commands").
Copy&paste ChangeLog entry detected. :-)

Fixed that and merged. Thanks much for the fix again, and bonus
points for adding a test.
Post by Benno Fünfstück
+gdb_test " " "23" "test that gdb.execute does not affect repeat history"
I dropped the "test that" bit since all tests test something.

Here's what I merged.

From 1c97054b87495b008c6028d697deff61c9fb0b6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benno=20F=C3=BCnfst=C3=BCck?= <***@gmail.com>
Date: Wed, 21 Nov 2018 17:06:05 +0000
Subject: [PATCH] Make command-repeat work after gdb.execute

Since commit

56bcdbea2bed ("Let gdb.execute handle multi-line commands")

command repetition after using the `gdb.execute` Python function
fails (the previous command is not repeated anymore). This happens
because read_command_lines_1 sets dont_repeat, but the call to
prevent_dont_repeat in execute_gdb_command is later.

The fix is to move the call to prevent_dont_repeat to the beginning of
the function.

Tested on my laptop (ArchLinux-x86_64).

gdb/ChangeLog:

PR python/23714
* gdb/python/python.c (execute_gdb_command): Call
prevent_dont_repeat earlier to avoid affecting dont_repeat.

gdb/testuite/ChangeLog:

PR python/23714
* gdb.python/python.exp: Test command repetition after
gdb.execute.
---
gdb/ChangeLog | 6 ++++++
gdb/testsuite/ChangeLog | 6 ++++++
gdb/python/python.c | 3 ++-
gdb/testsuite/gdb.python/python.exp | 1 +
4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 1630bd87a0..d562a4b5df 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2018-11-21 Benno Fünfstück <***@gmail.com>
+
+ PR python/23714
+ * gdb/python/python.c (execute_gdb_command): Call
+ prevent_dont_repeat earlier to avoid affecting dont_repeat.
+
2018-11-21 Andrew Burgess <***@embecosm.com>

* Makefile.in (ALL_TARGET_OBS): Add arch/riscv.o.
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 093603a89e..06a1a06719 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2018-11-21 Benno Fünfstück <***@gmail.com>
+
+ PR python/23714
+ * gdb.python/python.exp: Test command repetition after
+ gdb.execute.
+
2018-11-20 Andrew Burgess <***@embecosm.com>

* gdb.opt/inline-break.exp: Add test that info breakpoint output
diff --git a/gdb/python/python.c b/gdb/python/python.c
index a37ed10bcf..d6453e786c 100644
--- a/gdb/python/python.c
+++ b/gdb/python/python.c
@@ -583,6 +583,8 @@ execute_gdb_command (PyObject *self, PyObject *args, PyObject *kw)

std::string to_string_res;

+ scoped_restore preventer = prevent_dont_repeat ();
+
TRY
{
struct interp *interp;
@@ -612,7 +614,6 @@ execute_gdb_command (PyObject *self, PyObject *args, PyObject *kw)
interp = interp_lookup (current_ui, "console");
current_uiout = interp->interp_ui_out ();

- scoped_restore preventer = prevent_dont_repeat ();
if (to_string)
to_string_res = execute_control_commands_to_string (lines.get (),
from_tty);
diff --git a/gdb/testsuite/gdb.python/python.exp b/gdb/testsuite/gdb.python/python.exp
index 0723507af3..60423d2fb7 100644
--- a/gdb/testsuite/gdb.python/python.exp
+++ b/gdb/testsuite/gdb.python/python.exp
@@ -121,6 +121,7 @@ gdb_test "python print (x)" "23"

gdb_test "python gdb.execute('echo 2\\necho 3\\\\n\\n')" "23" \
"multi-line execute"
+gdb_test " " "23" "gdb.execute does not affect repeat history"

# Test post_event.
gdb_py_test_multiple "post event insertion" \
--
2.14.4
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