diff options
Diffstat (limited to 'patches/gcc/4.0.1/pr21951-fix2.patch')
| -rw-r--r-- | patches/gcc/4.0.1/pr21951-fix2.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/patches/gcc/4.0.1/pr21951-fix2.patch b/patches/gcc/4.0.1/pr21951-fix2.patch new file mode 100644 index 0000000..5e35a1e --- /dev/null +++ b/patches/gcc/4.0.1/pr21951-fix2.patch @@ -0,0 +1,71 @@ +Workaround for buglet in std::vector etc. when compiling +with gcc-4.0.1 -Wall -O -fno-exceptions +Fixes: + +.../include/c++/4.0.0/bits/vector.tcc: In member function 'void std::vector<_Tp, +_Alloc>::reserve(size_t) [with _Tp = int, _Alloc = std::allocator<int>]': +.../include/c++/4.0.0/bits/vector.tcc:78: warning: control may reach end of +non-void function 'typename _Alloc::pointer std::vector<_Tp, +_Alloc>::_M_allocate_and_copy(size_t, _ForwardIterator, _ForwardIterator) [with +_ForwardIterator = int*, _Tp = int, _Alloc = std::allocator<int>]' being inlined + +See http://gcc.gnu.org/PR21951 + +To: gcc-patches at gcc dot gnu dot org +Subject: [4.0.x] may reach end warning in system headers +Message-Id: <20050701183024.E138714C16A9@geoffk5.apple.com> +Date: Fri, 1 Jul 2005 11:30:24 -0700 (PDT) +From: gkeating at apple dot com (Geoffrey Keating) + + +One of our users was getting + +/usr/include/gcc/darwin/4.0/c++/bits/stl_uninitialized.h:113: warning: +control may reach end of non-void function '_ForwardIterator +std::__uninitialized_copy_aux(_InputIterator, _InputIterator, +_ForwardIterator, __false_type) [with _InputIterator = +__gnu_cxx::__normal_iterator<TPoolAllocator::tAllocState*, +std::vector<TPoolAllocator::tAllocState, +std::allocator<TPoolAllocator::tAllocState> > >, _ForwardIterator = +__gnu_cxx::__normal_iterator<TPoolAllocator::tAllocState*, +std::vector<TPoolAllocator::tAllocState, +std::allocator<TPoolAllocator::tAllocState> > >]' being inlined + +which shouldn't be happening, he has no way to change a standard C++ +header. The warning is bogus anyway, but it's fixed in 4.1 through +the CFG changes, which I don't really want to backport to the 4.0 +branch, so instead I'll add this patch. Other warnings generated from +tree-inline.c check for DECL_SYSTEM_HEADER like this. + +Bootstrapped & tested on powerpc-darwin8, I'll commit when the branch +is unfrozen. + +-- +- Geoffrey Keating <geoffk@apple.com> + +===File ~/patches/gcc-40-4121982.patch====================== +Index: ChangeLog +2005-06-28 Geoffrey Keating <geoffk@apple.com> + + * tree-inline.c (expand_call_inline): Prevent 'may reach end' + warning in system headers. + +Index: tree-inline.c +=================================================================== +RCS file: /cvs/gcc/gcc/gcc/tree-inline.c,v +retrieving revision 1.170.8.4 +diff -u -p -u -p -r1.170.8.4 tree-inline.c +--- gcc-4.0.1/gcc/tree-inline.c.old 6 Jun 2005 19:20:32 -0000 1.170.8.4 ++++ gcc-4.0.1/gcc/tree-inline.c 1 Jul 2005 18:27:26 -0000 +@@ -1693,7 +1693,8 @@ expand_call_inline (tree *tp, int *walk_ + && !TREE_NO_WARNING (fn) + && !VOID_TYPE_P (TREE_TYPE (TREE_TYPE (fn))) + && return_slot_addr == NULL_TREE +- && block_may_fallthru (copy)) ++ && block_may_fallthru (copy) ++ && !DECL_IN_SYSTEM_HEADER (fn)) + { + warning ("control may reach end of non-void function %qD being inlined", + fn); +============================================================ + |