Vendor import of llvm trunk r241361:

https://llvm.org/svn/llvm-project/llvm/trunk@241361

1 files changed, 10 insertions, 5 deletions

diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index c9df8fc..e925bc2 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -116,8 +116,6 @@ class ELFObjectWriter : public MCObjectWriter {
     unsigned StringTableIndex;
     // This holds the .symtab section index.
     unsigned SymbolTableIndex;
-    // This holds the .symtab_shndx section index.
-    unsigned SymtabShndxSectionIndex = 0;
 
     // Sections in the order they are to be output in the section table.
     std::vector<const MCSectionELF *> SectionTable;
@@ -144,7 +142,6 @@ class ELFObjectWriter : public MCObjectWriter {
       Renames.clear();
       Relocations.clear();
       StrTabBuilder.clear();
-      SymtabShndxSectionIndex = 0;
       SectionTable.clear();
       MCObjectWriter::reset();
     }
@@ -232,7 +229,7 @@ class ELFObjectWriter : public MCObjectWriter {
                       uint32_t GroupSymbolIndex, uint64_t Offset, uint64_t Size,
                       const MCSectionELF &Section);
   };
-} // namespace
+}
 
 void ELFObjectWriter::align(unsigned Alignment) {
   uint64_t Padding = OffsetToAlignment(OS.tell(), Alignment);
@@ -787,10 +784,15 @@ void ELFObjectWriter::computeSymbolTable(
                     Renames.count(&Symbol)))
       continue;
 
+    if (Symbol.isTemporary() && Symbol.isUndefined())
+      Ctx.reportFatalError(SMLoc(), "Undefined temporary");
+
     ELFSymbolData MSD;
     MSD.Symbol = cast<MCSymbolELF>(&Symbol);
 
     bool Local = Symbol.getBinding() == ELF::STB_LOCAL;
+    assert(Local || !Symbol.isTemporary());
+
     if (Symbol.isAbsolute()) {
       MSD.SectionIndex = ELF::SHN_ABS;
     } else if (Symbol.isCommon()) {
@@ -837,12 +839,12 @@ void ELFObjectWriter::computeSymbolTable(
     // seems that this information is not easily accessible from the
     // ELFObjectWriter.
     StringRef Name = Symbol.getName();
+    SmallString<32> Buf;
     if (!Name.startswith("?") && !Name.startswith("@?") &&
         !Name.startswith("__imp_?") && !Name.startswith("__imp_@?")) {
       // This symbol isn't following the MSVC C++ name mangling convention. We
       // can thus safely interpret the @@@ in symbol names as specifying symbol
       // versioning.
-      SmallString<32> Buf;
       size_t Pos = Name.find("@@@");
       if (Pos != StringRef::npos) {
         Buf += Name.substr(0, Pos);
@@ -862,6 +864,9 @@ void ELFObjectWriter::computeSymbolTable(
       ExternalSymbolData.push_back(MSD);
   }
 
+  // This holds the .symtab_shndx section index.
+  unsigned SymtabShndxSectionIndex = 0;
+
   if (HasLargeSectionIndex) {
     MCSectionELF *SymtabShndxSection =
         Ctx.getELFSection(".symtab_shndxr", ELF::SHT_SYMTAB_SHNDX, 0, 4, "");