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[lldb] Show value for libcxx and libstdcxx summary and remove pointer value in libcxx container summary #125294

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Feb 3, 2025
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Original file line number Diff line number Diff line change
Expand Up @@ -641,7 +641,7 @@ static void LoadLibCxxFormatters(lldb::TypeCategoryImplSP cpp_category_sp) {
.SetSkipPointers(false)
.SetSkipReferences(false)
.SetDontShowChildren(true)
.SetDontShowValue(true)
.SetDontShowValue(false)
.SetShowMembersOneLiner(false)
.SetHideItemNames(false);

Expand Down Expand Up @@ -1204,7 +1204,7 @@ static void LoadLibStdcppFormatters(lldb::TypeCategoryImplSP cpp_category_sp) {
.SetSkipPointers(false)
.SetSkipReferences(false)
.SetDontShowChildren(true)
.SetDontShowValue(true)
.SetDontShowValue(false)
.SetShowMembersOneLiner(false)
.SetHideItemNames(false);

Expand Down
6 changes: 0 additions & 6 deletions lldb/source/Plugins/Language/CPlusPlus/LibCxx.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -430,12 +430,6 @@ size_t lldb_private::formatters::LibcxxUniquePtrSyntheticFrontEnd::

bool lldb_private::formatters::LibcxxContainerSummaryProvider(
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
if (valobj.IsPointerType()) {
uint64_t value = valobj.GetValueAsUnsigned(0);
if (!value)
return false;
stream.Printf("0x%016" PRIx64 " ", value);
}
return FormatEntity::FormatStringRef("size=${svar%#}", stream, nullptr,
nullptr, nullptr, &valobj, false, false);
}
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -9,22 +9,27 @@


class LibcxxDequeDataFormatterTestCase(TestBase):
def check_numbers(self, var_name):
def check_numbers(self, var_name, show_ptr=False):
patterns = []
substrs = [
"[0] = 1",
"[1] = 12",
"[2] = 123",
"[3] = 1234",
"[4] = 12345",
"[5] = 123456",
"[6] = 1234567",
"}",
]
if show_ptr:
patterns = [var_name + " = 0x.* size=7"]
else:
substrs.insert(0, var_name + " = size=7")
self.expect(
"frame variable " + var_name,
substrs=[
var_name + " = size=7",
"[0] = 1",
"[1] = 12",
"[2] = 123",
"[3] = 1234",
"[4] = 12345",
"[5] = 123456",
"[6] = 1234567",
"}",
],
patterns=patterns,
substrs=substrs,
)

self.expect_expr(
var_name,
result_summary="size=7",
Expand Down Expand Up @@ -75,7 +80,7 @@ def test_ref_and_ptr(self):
)

# The reference should display the same was as the value did
self.check_numbers("ref")
self.check_numbers("ref", True)

# The pointer should just show the right number of elements:
self.expect("frame variable ptr", substrs=["ptr =", " size=7"])
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -172,7 +172,4 @@ def test_ref_and_ptr(self):

# The pointer should just show the right number of elements:

ptrAddr = self.findVariable("ptr").GetValue()
self.expect_expr(
"ptr", result_type="std::span<int, 5> *", result_summary=f"{ptrAddr} size=5"
)
self.expect("frame variable ptr", patterns=["ptr = 0x.*", " size=5"])
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Contributor Author

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SBValue::GetValue essentially uses the summary string provided by summary provider. So it returns "size=5" after I removed the pointer value in libcxx container summary.

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That makes sense, but you can still use expect_expr to match this. You just need to say result_summary=re.compile("your_pattern")

Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ def test_with_run_command(self):

self.expect(
"frame variable v1_ref",
substrs=["v1_ref = Active Type = int : {", "Value = 12", "}"],
patterns=["v1_ref = 0x.* Active Type = int : {", "Value = 12", "}"],
)

self.expect(
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -10,22 +10,28 @@


class LibcxxVectorDataFormatterTestCase(TestBase):
def check_numbers(self, var_name):
def check_numbers(self, var_name, show_ptr=False):
patterns = []
substrs = [
"[0] = 1",
"[1] = 12",
"[2] = 123",
"[3] = 1234",
"[4] = 12345",
"[5] = 123456",
"[6] = 1234567",
"}",
]
if show_ptr:
patterns = [var_name + " = 0x.* size=7"]
else:
substrs.insert(0, var_name + " = size=7")

self.expect(
"frame variable " + var_name,
substrs=[
var_name + " = size=7",
"[0] = 1",
"[1] = 12",
"[2] = 123",
"[3] = 1234",
"[4] = 12345",
"[5] = 123456",
"[6] = 1234567",
"}",
],
patterns=patterns,
substrs=substrs,
)

self.expect_expr(
var_name,
result_summary="size=7",
Expand Down Expand Up @@ -174,7 +180,7 @@ def test_ref_and_ptr(self):
)

# The reference should display the same was as the value did
self.check_numbers("ref")
self.check_numbers("ref", True)

# The pointer should just show the right number of elements:

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,7 @@ def test_with_run_command(self):
for name in ["v1_ref", "v1_typedef_ref"]:
self.expect(
"frame variable " + name,
substrs=[name + " = Active Type = int : {", "Value = 12", "}"],
patterns=[name + " = 0x.* Active Type = int : {", "Value = 12", "}"],
)

self.expect(
Expand Down