[binutils-gdb] Handle bool specially in gdb.set_parameter

[Tom Tromey <tromey@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=fa17a6814113ac22d8059d61514aa2c6e29b0aae

commit fa17a6814113ac22d8059d61514aa2c6e29b0aae
Author: Tom Tromey <tom@tromey.com>
Date:   Sun Jun 12 11:36:08 2022 -0600

    Handle bool specially in gdb.set_parameter
    
    PR python/29217 points out that gdb.parameter will return bool values,
    but gdb.set_parameter will not properly accept them.  This patch fixes
    the problem by adding a special case to set_parameter.
    
    I looked at a fix involving rewriting set_parameter in C++.  However,
    this one is simpler.
    
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29217

Diff:
---
 gdb/python/lib/gdb/__init__.py            | 7 +++++++
 gdb/testsuite/gdb.python/py-parameter.exp | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/gdb/python/lib/gdb/__init__.py b/gdb/python/lib/gdb/__init__.py
index 17ee6a19e14..9e9978ef30e 100644
--- a/gdb/python/lib/gdb/__init__.py
+++ b/gdb/python/lib/gdb/__init__.py
@@ -239,6 +239,13 @@ def find_pc_line(pc):
 
 def set_parameter(name, value):
     """Set the GDB parameter NAME to VALUE."""
+    # Handle the specific case of booleans here, because gdb.parameter
+    # can return them, but they can't be passed to 'set' this way.
+    if isinstance(value, bool):
+        if value:
+            value = 'on'
+        else:
+            value = 'off'
     execute("set " + name + " " + str(value), to_string=True)
 
 
diff --git a/gdb/testsuite/gdb.python/py-parameter.exp b/gdb/testsuite/gdb.python/py-parameter.exp
index db158ddec26..d6db6ac3bb1 100644
--- a/gdb/testsuite/gdb.python/py-parameter.exp
+++ b/gdb/testsuite/gdb.python/py-parameter.exp
@@ -126,6 +126,10 @@ proc_with_prefix test_boolean_parameter { } {
 	"The state of the Test Parameter is off.*" "show parameter off"
     gdb_test "python print (test_param.value)" "False" \
 	"test boolean parameter value is False"
+    gdb_test_no_output "python gdb.set_parameter('print test-param', True)" \
+	"set boolean parameter using set_parameter"
+    gdb_test "python print(gdb.parameter('print test-param'))" "True" \
+	"get boolean parameter using gdb.parameter"
     gdb_test "help show print test-param" \
 	[multi_line \
 	     "Show the state of the boolean test-param" \