temporary

main.cc

@@ -451,6 +451,23 @@ static void scan_rels() {
   }
 }
 
+static void export_dynamic() {
+  MyTimer t("export_dynamic", before_copy_timer);
+  if (!config.export_dynamic)
+    return;
+
+  std::vector<std::vector<Symbol *>> vec(out::objs.size());
+
+  tbb::parallel_for(0, (int)out::objs.size(), [&](int i) {
+    for (Symbol *sym : out::objs[i]->symbols)
+      if (sym->file == out::objs[i])
+        vec[i].push_back(sym);
+  });
+
+  for (Symbol *sym : flatten(vec))
+    out::dynsym->add_symbol(sym);
+}
+
 static void fill_symbol_versions() {
   MyTimer t("fill_symbol_versions", before_copy_timer);
 
@@ -1002,6 +1019,9 @@ int main(int argc, char **argv) {
   // .got.plt, .dynsym, .dynstr, etc.
   scan_rels();
 
+  // Put symbols to .dynsym.
+  export_dynamic();
+
   // Fill .gnu.version and .gnu.version_r section contents.
   fill_symbol_versions();
 
@@ -1014,8 +1034,8 @@ int main(int argc, char **argv) {
   // section indices to them, so we can fix section header contents
   // for all output sections.
   tbb::parallel_for_each(out::chunks, [](OutputChunk *chunk) {
-     chunk->update_shdr();
+    chunk->update_shdr();
-   });
+  });
 
   // Assign offsets to output sections
   u64 filesize = set_osec_offsets(out::chunks);

output_chunks.cc

@@ -27,11 +27,10 @@ void OutputEhdr::copy_buf() {
 }
 
 void OutputShdr::update_shdr() {
-  int i = 1;
+  shdr.sh_size = sizeof(ELF64LE::Shdr);
   for (OutputChunk *chunk : out::chunks)
     if (chunk->kind != OutputChunk::HEADER)
-      i++;
+      shdr.sh_size += sizeof(ELF64LE::Shdr);
-  shdr.sh_size = i * sizeof(ELF64LE::Shdr);
 }
 
 void OutputShdr::copy_buf() {

test/export-dynamic.s

@@ -1,5 +1,6 @@
-// RUN: cc -o %t.o -c %s
+// RUN: cc -o %t1.o -c %s
-// RUN: mold -o %t.exe %t.o --export-dynamic
+// RUN: cc -shared -fPIC -o %t2.so -xc - < /dev/null
+// RUN: mold -o %t.exe %t1.o %t2.so --export-dynamic
 // RUN: readelf --dyn-syms %t.exe | FileCheck %s
 
         .text