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| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-09-10 09:23:16 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-09-10 09:23:16 +0000 |
| commit | 4a94b9969ec93ed510cd233bff1a32103be2d78b (patch) | |
| tree | 303e23d283cab6629b540e2e4d7e2702600c3851 /gcc/doc | |
| parent | 73a69d0244f43445be2350831329b465c6bdd21b (diff) | |
| download | gcc-4a94b9969ec93ed510cd233bff1a32103be2d78b.tar.gz | |
gcc/
* flag-types.h (enum sanitize_code): Add SANITIZE_NONNULL_ATTRIBUTE
and SANITIZE_RETURNS_NONNULL_ATTRIBUTE, or them into SANITIZE_UNDEFINED.
* opts.c (common_handle_option): Handle SANITIZE_NONNULL_ATTRIBUTE and
SANITIZE_RETURNS_NONNULL_ATTRIBUTE and disable
flag_delete_null_pointer_checks for them.
* sanitizer.def (BUILT_IN_UBSAN_HANDLE_NONNULL_ARG,
BUILT_IN_UBSAN_HANDLE_NONNULL_ARG_ABORT,
BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN,
BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_ABORT): New.
* ubsan.c (instrument_bool_enum_load): Set *gsi back to
stmt's iterator.
(instrument_nonnull_arg, instrument_nonnull_return): New functions.
(pass_ubsan::gate): Return true even for SANITIZE_NONNULL_ATTRIBUTE
or SANITIZE_RETURNS_NONNULL_ATTRIBUTE.
(pass_ubsan::execute): Call instrument_nonnull_{arg,return}.
* doc/invoke.texi (-fsanitize=nonnull-attribute,
-fsanitize=returns-nonnull-attribute): Document.
gcc/testsuite/
* c-c++-common/ubsan/attrib-3.c: New test.
* c-c++-common/ubsan/nonnull-1.c: New test.
* c-c++-common/ubsan/nonnull-2.c: New test.
* c-c++-common/ubsan/nonnull-3.c: New test.
* c-c++-common/ubsan/nonnull-4.c: New test.
* c-c++-common/ubsan/nonnull-5.c: New test.
libsanitizer/
* ubsan/ubsan_handlers.cc, ubsan/ubsan_handlers.h: Cherry pick
upstream r215485, r217389, r217391 and r217400.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215118 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index a680be918fc..863b382e868 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -5582,6 +5582,20 @@ This option enables floating-point type to integer conversion checking. We check that the result of the conversion does not overflow. This option does not work well with @code{FE_INVALID} exceptions enabled. +@item -fsanitize=nonnull-attribute +@opindex fsanitize=nonnull-attribute + +This option enables instrumentation of calls, checking whether null values +are not passed to arguments marked as requiring a non-null value by the +@code{nonnull} function attribute. + +@item -fsanitize=returns-nonnull-attribute +@opindex fsanitize=returns-nonnull-attribute + +This option enables instrumentation of return statements in functions +marked with @code{returns_nonnull} function attribute, to detect returning +of null values from such functions. + @end table While @option{-ftrapv} causes traps for signed overflows to be emitted, |