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| author | Jakub Jelinek <jakub@redhat.com> | 2012-11-23 17:04:03 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-11-23 17:04:03 +0100 |
| commit | 88cd0e88e36515f01b6f1e398358dc11cc06c389 (patch) | |
| tree | 756c94d3f1786802105c930a7ed81bf4e39c9a8d /gcc/langhooks.h | |
| parent | 340ef734b8072d2b58f946bb69170f2e535813d7 (diff) | |
| download | gcc-88cd0e88e36515f01b6f1e398358dc11cc06c389.tar.gz | |
re PR c++/54046 (wrong control reaches end of non-void function for switch case with throw and default)
PR c++/54046
* Makefile.in (gimple-low.o): Depend on langhooks.h.
* gimple-low.c: Include langhooks.c.
(block_may_fallthru): Handle TARGET_EXPR and ERROR_MARK,
by default call lang_hooks.block_may_fallthru.
* langhooks.h (struct lang_hooks): Add block_may_fallthru
langhook.
* langhooks-def.h (LANG_HOOKS_BLOCK_MAY_FALLTHRU): Define.
(LANG_HOOKS_INITIALIZER): Use it.
* cp-objcp-common.h (LANG_HOOKS_BLOCK_MAY_FALLTHRU): Redefine.
* cp-objcp-common.c (cxx_block_may_fallthru): New function.
* cp-tree.h (cxx_block_may_fallthru): New prototype.
* g++.dg/warn/Wreturn-type-8.C: New test.
From-SVN: r193762
Diffstat (limited to 'gcc/langhooks.h')
| -rw-r--r-- | gcc/langhooks.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/langhooks.h b/gcc/langhooks.h index a9190672920..8481ba46d6c 100644 --- a/gcc/langhooks.h +++ b/gcc/langhooks.h @@ -1,6 +1,6 @@ /* The lang_hooks data structure. Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, - 2011 Free Software Foundation, Inc. + 2011, 2012 Free Software Foundation, Inc. This file is part of GCC. @@ -456,6 +456,10 @@ struct lang_hooks FUNCTION_DECL for `std::terminate'. */ tree (*eh_protect_cleanup_actions) (void); + /* Return true if a stmt can fallthru. Used by block_may_fallthru + to possibly handle language trees. */ + bool (*block_may_fallthru) (const_tree); + /* True if this language uses __cxa_end_cleanup when the ARM EABI is enabled. */ bool eh_use_cxa_end_cleanup; |