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merged 2 commits into from
May 20, 2025
Merged

[lldb] Reduce max-children-count default to readable size #139826

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52c587e
[lldb] Reduce max-children-count default to readable size
kastiglione May 9, 2025
84cfdf8
Test fixes
kastiglione May 19, 2025
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2 changes: 1 addition & 1 deletion lldb/source/Target/TargetProperties.td
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Expand Up @@ -96,7 +96,7 @@ let Definition = "target" in {
DefaultUnsignedValue<6>,
Desc<"The maximum number of zeroes to insert when displaying a very small float before falling back to scientific notation.">;
def MaxChildrenCount: Property<"max-children-count", "UInt64">,
DefaultUnsignedValue<256>,
DefaultUnsignedValue<24>,
Desc<"Maximum number of children to expand in any level of depth.">;
def MaxChildrenDepth: Property<"max-children-depth", "UInt64">,
DefaultUnsignedValue<0xFFFFFFFF>,
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2 changes: 1 addition & 1 deletion lldb/test/API/functionalities/data-formatter/data-formatter-advanced/TestDataFormatterAdv.py
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Expand Up @@ -39,7 +39,7 @@ def test_with_run_command(self):
def cleanup():
self.runCmd("type format clear", check=False)
self.runCmd("type summary clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)
self.runCmd("settings set target.max-children-count 24", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
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4 changes: 2 additions & 2 deletions ...-formatter/data-formatter-stl/generic/forward_list/TestDataFormatterGenericForwardList.py
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Expand Up @@ -50,7 +50,7 @@ def do_test(self, stdlib_type):
self.expect(
"settings show target.max-children-count",
matching=True,
substrs=["target.max-children-count (unsigned) = 256"],
substrs=["target.max-children-count (unsigned) = 24"],
)

self.expect(
Expand All @@ -73,7 +73,7 @@ def do_test(self, stdlib_type):
self.expect(
"frame variable thousand_elts",
matching=True,
substrs=["size=256", "[0]", "[1]", "[2]", "..."],
substrs=["size=24", "[0]", "[1]", "[2]", "..."],
)

def do_test_ptr_and_ref(self, stdlib_type):
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1 change: 0 additions & 1 deletion ...ionalities/data-formatter/data-formatter-stl/generic/list/TestDataFormatterGenericList.py
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Expand Up @@ -50,7 +50,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion ...es/data-formatter/data-formatter-stl/generic/multimap/TestDataFormatterGenericMultiMap.py
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Expand Up @@ -65,7 +65,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
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1 change: 0 additions & 1 deletion ...es/data-formatter/data-formatter-stl/generic/multiset/TestDataFormatterGenericMultiSet.py
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Expand Up @@ -51,7 +51,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion ...ctionalities/data-formatter/data-formatter-stl/generic/set/TestDataFormatterGenericSet.py
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Expand Up @@ -51,7 +51,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion .../data-formatter/data-formatter-stl/generic/unordered/TestDataFormatterGenericUnordered.py
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Expand Up @@ -33,7 +33,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)
self.runCmd("settings set auto-one-line-summaries true", check=False)

# Execute the cleanup function during test case tear down.
Expand Down
1 change: 0 additions & 1 deletion ...ities/data-formatter/data-formatter-stl/libcxx/iterator/TestDataFormatterLibccIterator.py
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Expand Up @@ -43,7 +43,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion ...functionalities/data-formatter/data-formatter-stl/libcxx/map/TestDataFormatterLibccMap.py
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Expand Up @@ -50,7 +50,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion ...nalities/data-formatter/data-formatter-stl/libcxx/string/TestDataFormatterLibcxxString.py
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Expand Up @@ -41,7 +41,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

is_64_bit = self.process().GetAddressByteSize() == 8

Expand Down
1 change: 0 additions & 1 deletion ...data-formatter/data-formatter-stl/libcxx/string_view/TestDataFormatterLibcxxStringView.py
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Expand Up @@ -55,7 +55,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
6 changes: 3 additions & 3 deletions ...ionalities/data-formatter/data-formatter-stl/libcxx/vbool/TestDataFormatterLibcxxVBool.py
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Expand Up @@ -42,13 +42,13 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)
self.runCmd("settings set target.max-children-count 24", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)

self.expect(
"frame variable vBool",
"frame variable -A vBool",
substrs=[
"size=49",
"[0] = false",
Expand All @@ -62,7 +62,7 @@ def cleanup():
)

self.expect(
"expr vBool",
"expr -A -- vBool",
substrs=[
"size=49",
"[0] = false",
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1 change: 0 additions & 1 deletion ...nalities/data-formatter/data-formatter-stl/libcxx/vector/TestDataFormatterLibcxxVector.py
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Expand Up @@ -67,7 +67,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion ...ties/data-formatter/data-formatter-stl/libstdcpp/iterator/TestDataFormatterStdIterator.py
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Expand Up @@ -43,7 +43,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion ...unctionalities/data-formatter/data-formatter-stl/libstdcpp/map/TestDataFormatterStdMap.py
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Expand Up @@ -41,7 +41,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
1 change: 0 additions & 1 deletion ...nalities/data-formatter/data-formatter-stl/libstdcpp/string/TestDataFormatterStdString.py
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Expand Up @@ -44,7 +44,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
5 changes: 2 additions & 3 deletions ...ionalities/data-formatter/data-formatter-stl/libstdcpp/vbool/TestDataFormatterStdVBool.py
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Expand Up @@ -42,13 +42,12 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)

self.expect(
"frame variable vBool",
"frame variable -A vBool",
substrs=[
"size=49",
"[0] = false",
Expand All @@ -62,7 +61,7 @@ def cleanup():
)

self.expect(
"expr vBool",
"expr -A -- vBool",
substrs=[
"size=49",
"[0] = false",
Expand Down
1 change: 0 additions & 1 deletion ...nalities/data-formatter/data-formatter-stl/libstdcpp/vector/TestDataFormatterStdVector.py
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Expand Up @@ -41,7 +41,6 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand Down
6 changes: 3 additions & 3 deletions lldb/test/API/functionalities/data-formatter/synthcapping/TestSyntheticCapping.py
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Expand Up @@ -43,7 +43,7 @@ def cleanup():
self.runCmd("type summary clear", check=False)
self.runCmd("type filter clear", check=False)
self.runCmd("type synth clear", check=False)
self.runCmd("settings set target.max-children-count 256", check=False)
self.runCmd("settings set target.max-children-count 24", check=False)

# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
Expand All @@ -68,10 +68,10 @@ def cleanup():
"r = 34",
],
)
# num_children() should be called with at most max_num_children=257
# num_children() should be called with at most max_num_children=25
# (target.max-children-count + 1)
self.expect(
"script fooSynthProvider.reset_max_num_children_max()", substrs=["257"]
"script fooSynthProvider.reset_max_num_children_max()", substrs=["25"]
)

# check that capping works
Expand Down
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