diff options
| author | manu <manu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-07-15 05:46:36 +0000 |
|---|---|---|
| committer | manu <manu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-07-15 05:46:36 +0000 |
| commit | 8bc8a8f43fa33db5455a90cca4f0ad5e67b20612 (patch) | |
| tree | a01412ef395a7d90aeb4d60dc1ddd5779ac1fb35 /gcc/doc/invoke.texi | |
| parent | e253d57d2ac1db94bc81e9a0fcfdeec0fe08f7bb (diff) | |
| download | gcc-8bc8a8f43fa33db5455a90cca4f0ad5e67b20612.tar.gz | |
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.
testsuite/
* gcc.dg/Wtrampolines.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@162205 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 4d6a1af3aa8..12855a4f0d5 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -260,8 +260,8 @@ Objective-C and Objective-C++ Dialects}. -Wstrict-overflow -Wstrict-overflow=@var{n} @gol -Wsuggest-attribute=@r{[}pure@r{|}const@r{|}noreturn@r{]} @gol -Wswitch -Wswitch-default -Wswitch-enum -Wsync-nand @gol --Wsystem-headers -Wtrigraphs -Wtype-limits -Wundef -Wuninitialized @gol --Wunknown-pragmas -Wno-pragmas @gol +-Wsystem-headers -Wtrampolines -Wtrigraphs -Wtype-limits -Wundef @gol +-Wuninitialized -Wunknown-pragmas -Wno-pragmas @gol -Wunsuffixed-float-constants -Wunused -Wunused-function @gol -Wunused-label -Wunused-parameter -Wno-unused-result -Wunused-value -Wunused-variable @gol -Wunused-but-set-parameter -Wunused-but-set-variable -Wvariadic-macros -Wvla @gol @@ -3724,6 +3724,18 @@ 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. + + 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 |