* dwarf_reader.cc (Sized_dwarf_line_info::process_one_opcode): Fix

[binutils-gdb.git] / gold / symtab.h

diff --git a/gold/symtab.h b/gold/symtab.h
index b9b9e00811e4c32380fa530da51f9e4b20190b25..feed2458103420322b5a0b76e176494b00056451 100644 (file)
--- a/gold/symtab.h
+++ b/gold/symtab.h
@@ -993,7 +993,12 @@ class Symbol
   // index, not one of the special codes from SHN_LORESERVE to
   // SHN_HIRESERVE (bit 29).
   bool is_ordinary_shndx_ : 1;
-  // True if we've seen this symbol in a real ELF object (bit 30).
+  // True if we've seen this symbol in a "real" ELF object (bit 30).
+  // If the symbol has been seen in a relocatable, non-IR, object file,
+  // it's known to be referenced from outside the IR.  A reference from
+  // a dynamic object doesn't count as a "real" ELF, and we'll simply
+  // mark the symbol as "visible" from outside the IR.  The compiler
+  // can use this distinction to guide its handling of COMDAT symbols.
   bool in_real_elf_ : 1;
   // True if this symbol is defined in a section which was discarded
   // (bit 31).
@@ -1308,10 +1313,9 @@ class Symbol_table
   void
   gc_mark_undef_symbols(Layout*);
 
-  // During garbage collection, this ensures externally visible symbols
-  // are not treated as garbage while building shared objects.
+  // This tells garbage collection that this symbol is referenced.
   void
-  gc_mark_symbol_for_shlib(Symbol* sym);
+  gc_mark_symbol(Symbol* sym);
 
   // During garbage collection, this keeps sections that correspond to 
   // symbols seen in dynamic objects.