llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-lldb
Author: None (foxtran)
<details>
<summary>Changes</summary>
This patch fixes `-Wreturn-type` warnings which happens if LLVM is built with
GCC compiler (14.1 is used for detecting)
Warnings:
```
llvm-project/lldb/source/ValueObject/DILLexer.cpp: In static member function
‘static llvm::StringRef lldb_private::dil::Token::GetTokenName(Kind)’:
llvm-project/lldb/source/ValueObject/DILLexer.cpp:33:1: warning: control
reaches end of non-void function [-Wreturn-type]
33 | }
| ^
```
and:
```
llvm-project/lldb/source/DataFormatters/TypeSummary.cpp: In member function
‘virtual std::string lldb_private::TypeSummaryImpl::GetSummaryKindName()’:
llvm-project/lldb/source/DataFormatters/TypeSummary.cpp:62:1: warning: control
reaches end of non-void function [-Wreturn-type]
62 | }
| ^
```
Technically, it is a bug in GCC (see #<!-- -->115345), however, UBSan with
Clang should detect these places, therefore it would be nice to provide a
return statement for all possible inputs (even invalid).
---
Full diff: https://github.com/llvm/llvm-project/pull/127974.diff
2 Files Affected:
- (modified) lldb/source/DataFormatters/TypeSummary.cpp (+2)
- (modified) lldb/source/ValueObject/DILLexer.cpp (+2)
``````````diff
diff --git a/lldb/source/DataFormatters/TypeSummary.cpp
b/lldb/source/DataFormatters/TypeSummary.cpp
index 2c863b364538f..1b73efa398d43 100644
--- a/lldb/source/DataFormatters/TypeSummary.cpp
+++ b/lldb/source/DataFormatters/TypeSummary.cpp
@@ -58,6 +58,8 @@ std::string TypeSummaryImpl::GetSummaryKindName() {
return "c++";
case Kind::eBytecode:
return "bytecode";
+ case default:
+ return "unknown";
}
}
diff --git a/lldb/source/ValueObject/DILLexer.cpp
b/lldb/source/ValueObject/DILLexer.cpp
index c7acfec347af4..a637fc1c978c7 100644
--- a/lldb/source/ValueObject/DILLexer.cpp
+++ b/lldb/source/ValueObject/DILLexer.cpp
@@ -29,6 +29,8 @@ llvm::StringRef Token::GetTokenName(Kind kind) {
return "l_paren";
case Kind::r_paren:
return "r_paren";
+ case default:
+ return "unknown";
}
}
``````````
</details>
https://github.com/llvm/llvm-project/pull/127974
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