remove workaround for GCC 4.1-4.3 [PR105606]

While looking into vec.h, I've noticed we still have a workaround for
GCC 4.1-4.3 bugs.
As we now use C++11 and thus need to be built by GCC 4.8 or later,
I think this is now never used.

2023-09-27  Jakub Jelinek  <jakub@redhat.com>

	PR c++/105606
	* system.h (BROKEN_VALUE_INITIALIZATION): Don't define.
	* vec.h (vec_default_construct): Remove BROKEN_VALUE_INITIALIZATION
	workaround.
	* function.cc (assign_parm_find_data_types): Likewise.

1 files changed, 0 insertions, 15 deletions

diff --git a/gcc/vec.h b/gcc/vec.h
index 6f7b048..8a9a8d8 100644
--- a/gcc/vec.h
+++ b/gcc/vec.h
@@ -512,21 +512,6 @@ template <typename T>
 inline void
 vec_default_construct (T *dst, unsigned n)
 {
-#ifdef BROKEN_VALUE_INITIALIZATION
-  /* Versions of GCC before 4.4 sometimes leave certain objects
-     uninitialized when value initialized, though if the type has
-     user defined default ctor, that ctor is invoked.  As a workaround
-     perform clearing first and then the value initialization, which
-     fixes the case when value initialization doesn't initialize due to
-     the bugs and should initialize to all zeros, but still allows
-     vectors for types with user defined default ctor that initializes
-     some or all elements to non-zero.  If T has no user defined
-     default ctor and some non-static data members have user defined
-     default ctors that initialize to non-zero the workaround will
-     still not work properly; in that case we just need to provide
-     user defined default ctor.  */
-  memset (dst, '\0', sizeof (T) * n);
-#endif
   for ( ; n; ++dst, --n)
     ::new (static_cast<void*>(dst)) T ();
 }