[lldb] Fix term-width setting (#82736)

I noticed that the term-width setting would always report its default
value (80) despite the driver correctly setting the value with
SBDebugger::SetTerminalWidth.

```
(lldb) settings show term-width
term-width (int) = 80
```

The issue is that the setting was defined as a SInt64 instead of a
UInt64 while the getter returned an unsigned value. There's no reason
the terminal width should be a signed value. My best guess it that it
was using SInt64 because UInt64 didn't support min and max values. I
fixed that and correct the type and now lldb reports the correct
terminal width:

```
(lldb) settings show term-width
term-width (unsigned) = 189
```

rdar://123488999

lldb/include/lldb/Interpreter/OptionValueSInt64.h

@@ -86,8 +86,8 @@ public:
 protected:
   int64_t m_current_value = 0;
   int64_t m_default_value = 0;
-  int64_t m_min_value = INT64_MIN;
-  int64_t m_max_value = INT64_MAX;
+  int64_t m_min_value = std::numeric_limits<int64_t>::min();
+  int64_t m_max_value = std::numeric_limits<int64_t>::max();
 };
 
 } // namespace lldb_private

lldb/include/lldb/Interpreter/OptionValueUInt64.h

@@ -64,13 +64,35 @@ public:
 
   uint64_t GetDefaultValue() const { return m_default_value; }
 
-  void SetCurrentValue(uint64_t value) { m_current_value = value; }
+  bool SetCurrentValue(uint64_t value) {
+    if (value >= m_min_value && value <= m_max_value) {
+      m_current_value = value;
+      return true;
+    }
+    return false;
+  }
 
-  void SetDefaultValue(uint64_t value) { m_default_value = value; }
+  bool SetDefaultValue(uint64_t value) {
+    if (value >= m_min_value && value <= m_max_value) {
+      m_default_value = value;
+      return true;
+    }
+    return false;
+  }
+
+  void SetMinimumValue(int64_t v) { m_min_value = v; }
+
+  uint64_t GetMinimumValue() const { return m_min_value; }
+
+  void SetMaximumValue(int64_t v) { m_max_value = v; }
+
+  uint64_t GetMaximumValue() const { return m_max_value; }
 
 protected:
   uint64_t m_current_value = 0;
   uint64_t m_default_value = 0;
+  uint64_t m_min_value = std::numeric_limits<uint64_t>::min();
+  uint64_t m_max_value = std::numeric_limits<uint64_t>::max();
 };
 
 } // namespace lldb_private

lldb/source/Core/CoreProperties.td

@@ -132,7 +132,7 @@ let Definition = "debugger" in {
     Global,
     DefaultStringValue<"${ansi.normal}">,
     Desc<"When displaying the line marker in a color-enabled terminal, use the ANSI terminal code specified in this format immediately after the line to be marked.">;
-  def TerminalWidth: Property<"term-width", "SInt64">,
+  def TerminalWidth: Property<"term-width", "UInt64">,
     Global,
     DefaultUnsignedValue<80>,
     Desc<"The maximum number of columns to use for displaying text.">;

lldb/source/Core/Debugger.cpp

@@ -886,8 +886,8 @@ Debugger::Debugger(lldb::LogOutputCallback log_callback, void *baton)
   }
   assert(m_dummy_target_sp.get() && "Couldn't construct dummy target?");
 
-  OptionValueSInt64 *term_width =
-      m_collection_sp->GetPropertyAtIndexAsOptionValueSInt64(
+  OptionValueUInt64 *term_width =
+      m_collection_sp->GetPropertyAtIndexAsOptionValueUInt64(
           ePropertyTerminalWidth);
   term_width->SetMinimumValue(10);
   term_width->SetMaximumValue(1024);

lldb/source/Interpreter/OptionValueUInt64.cpp

@@ -47,9 +47,16 @@ Status OptionValueUInt64::SetValueFromString(llvm::StringRef value_ref,
     llvm::StringRef value_trimmed = value_ref.trim();
     uint64_t value;
     if (llvm::to_integer(value_trimmed, value)) {
-      m_value_was_set = true;
-      m_current_value = value;
-      NotifyValueChanged();
+      if (value >= m_min_value && value <= m_max_value) {
+        m_value_was_set = true;
+        m_current_value = value;
+        NotifyValueChanged();
+      } else {
+        error.SetErrorStringWithFormat(
+            "%" PRIu64 " is out of range, valid values must be between %" PRIu64
+            " and %" PRIu64 ".",
+            value, m_min_value, m_max_value);
+      }
     } else {
       error.SetErrorStringWithFormat("invalid uint64_t string value: '%s'",
                                      value_ref.str().c_str());

lldb/test/API/commands/settings/TestSettings.py

@@ -2,7 +2,6 @@
 Test lldb settings command.
 """
 
-
 import json
 import os
 import re
@@ -151,14 +150,22 @@ class SettingsCommandTestCase(TestBase):
         self.expect(
             "settings show term-width",
             SETTING_MSG("term-width"),
-            startstr="term-width (int) = 70",
+            startstr="term-width (unsigned) = 70",
         )
 
         # The overall display should also reflect the new setting.
         self.expect(
             "settings show",
             SETTING_MSG("term-width"),
-            substrs=["term-width (int) = 70"],
+            substrs=["term-width (unsigned) = 70"],
+        )
+
+        self.dbg.SetTerminalWidth(60)
+
+        self.expect(
+            "settings show",
+            SETTING_MSG("term-width"),
+            substrs=["term-width (unsigned) = 60"],
         )
 
     # rdar://problem/10712130
@@ -593,7 +600,7 @@ class SettingsCommandTestCase(TestBase):
         self.expect(
             "settings show term-width",
             SETTING_MSG("term-width"),
-            startstr="term-width (int) = 60",
+            startstr="term-width (unsigned) = 60",
         )
         self.runCmd("settings clear term-width", check=False)
         # string

lldb/test/API/functionalities/progress_reporting/TestTrimmedProgressReporting.py

@@ -24,7 +24,8 @@ class TestTrimmedProgressReporting(PExpectTest):
         )
         self.expect("set set term-width " + str(term_width))
         self.expect(
-            "set show term-width", substrs=["term-width (int) = " + str(term_width)]
+            "set show term-width",
+            substrs=["term-width (unsigned) = " + str(term_width)],
         )
 
         self.child.send("file " + self.getBuildArtifact("a.out") + "\n")