diff options
Diffstat (limited to 'main/gcc/09_all_gcc-4.5-Wtrampolines.patch')
| -rw-r--r-- | main/gcc/09_all_gcc-4.5-Wtrampolines.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/main/gcc/09_all_gcc-4.5-Wtrampolines.patch b/main/gcc/09_all_gcc-4.5-Wtrampolines.patch new file mode 100644 index 0000000000..9c95c1e940 --- /dev/null +++ b/main/gcc/09_all_gcc-4.5-Wtrampolines.patch @@ -0,0 +1,64 @@ +2010-07-15 Magnus Granberg <zorry@gentoo.org> + Kevin F. Quinn <kevquinn@gentoo.org> + + * builtins.c (expand_builtin_init_trampoline): If + -Wtrampolines make a warning. + * common.opt: Add -Wtrampolines. + * doc/invoke.texi: Add -Wtrampolines. + +2010-07-31 Magnus Granberg <zorry@gentoo.org> + + #328451 set -Wtrampolines as default + +http://gcc.gnu.org/viewcvs?view=revision&revision=162205 + +--- a/gcc/builtins.c ++++ b/gcc/builtins.c +@@ -5155,6 +5155,10 @@ expand_builtin_init_trampoline (tree exp) + targetm.calls.trampoline_init (m_tramp, t_func, r_chain); + + trampolines_created = 1; ++ ++ warning_at (DECL_SOURCE_LOCATION (t_func), OPT_Wtrampolines, ++ "trampoline generated for nested function %qD", t_func); ++ + return const0_rtx; + } + +--- a/gcc/common.opt ++++ b/gcc/common.opt +@@ -192,6 +192,10 @@ Wsystem-headers + Common Var(warn_system_headers) Warning + Do not suppress warnings from system headers + ++Wtrampolines ++Common Var(warn_trampolines) Init(1) Warning ++Warn whenever a trampoline is generated ++ + Wtype-limits + Common Var(warn_type_limits) Init(-1) Warning + Warn if a comparison is always true or always false due to the limited range of the data type +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -3611,6 +3611,21 @@ code. However, note that using @option{-Wall} in conjunction with this + option will @emph{not} warn about unknown pragmas in system + headers---for that, @option{-Wunknown-pragmas} must also be used. + ++@item -Wtrampolines ++@opindex Wtrampolines ++@opindex Wno-trampolines ++ Warn about trampolines generated for pointers to nested functions. ++ ++ NOTE: In Gentoo, @option{-Wtrampolines} is set by default. ++ To disable, specify @option{-Wno-trampolines} ++ ++ A trampoline is a small piece of data or code that is created at run ++ time on the stack when the address of a nested function is taken, and ++ is used to call the nested function indirectly. For some targets, it ++ is made up of data only and thus requires no special treatment. But, ++ for most targets, it is made up of code and thus requires the stack ++ to be made executable in order for the program to work properly. ++ + @item -Wfloat-equal + @opindex Wfloat-equal + @opindex Wno-float-equal |