[flang-commits] [clang] [flang] [llvm] [flang] Improvise the error message for the option "-fconvert" with allowed values (PR #215966)

[Tom Eccles via flang-commits]

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@@ -299,6 +299,14 @@ class LLVM_ABI OptTable {
     return getInfo(id).MetaVar;
   }
 
+  /// Get the comma-separated list of values accepted by this option, as
+  /// declared by `Values` in its TableGen definition. Returns an empty string
+  /// for options that do not declare any.
+  StringRef getOptionValues(OptSpecifier id) const {
+    const char *Values = getInfo(id).Values;
+    return Values ? StringRef(Values) : StringRef();
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tblah wrote:

Where is the buffer for Values stored? I'm worried about the lifetime of the StringRef?

https://github.com/llvm/llvm-project/pull/215966