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| author | Marek Polacek <polacek@redhat.com> | 2014-05-23 14:44:42 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2014-05-23 14:44:42 +0000 |
| commit | 85a16bf8b55c7accb3b2f60568cd9119d9656494 (patch) | |
| tree | 76c97d7e36a0b8b32edf3400c6c2d38538e33618 /gcc/doc | |
| parent | fee9ba422f9193fb5e560bd430d7b14c55c128d1 (diff) | |
| download | gcc-85a16bf8b55c7accb3b2f60568cd9119d9656494.zip gcc-85a16bf8b55c7accb3b2f60568cd9119d9656494.tar.gz gcc-85a16bf8b55c7accb3b2f60568cd9119d9656494.tar.bz2 | |
builtins.def: Change SANITIZE_FLOAT_DIVIDE to SANITIZE_NONDEFAULT.
* builtins.def: Change SANITIZE_FLOAT_DIVIDE to SANITIZE_NONDEFAULT.
* gcc.c (sanitize_spec_function): Likewise.
* convert.c (convert_to_integer): Include "ubsan.h". Add
floating-point to integer instrumentation.
* doc/invoke.texi: Document -fsanitize=float-cast-overflow.
* flag-types.h (enum sanitize_code): Add SANITIZE_FLOAT_CAST and
SANITIZE_NONDEFAULT.
* opts.c (common_handle_option): Handle -fsanitize=float-cast-overflow.
* sanitizer.def (BUILT_IN_UBSAN_HANDLE_FLOAT_CAST_OVERFLOW,
BUILT_IN_UBSAN_HANDLE_FLOAT_CAST_OVERFLOW_ABORT): Add.
* ubsan.c: Include "realmpfr.h" and "dfp.h".
(get_ubsan_type_info_for_type): Handle REAL_TYPEs.
(ubsan_type_descriptor): Set tkind to 0xffff for types other than
float/double/long double.
(ubsan_instrument_float_cast): New function.
* ubsan.h (ubsan_instrument_float_cast): Declare.
testsuite/
* c-c++-common/ubsan/float-cast-overflow-1.c: New test.
* c-c++-common/ubsan/float-cast-overflow-10.c: New test.
* c-c++-common/ubsan/float-cast-overflow-2.c: New test.
* c-c++-common/ubsan/float-cast-overflow-3.c: New test.
* c-c++-common/ubsan/float-cast-overflow-4.c: New test.
* c-c++-common/ubsan/float-cast-overflow-5.c: New test.
* c-c++-common/ubsan/float-cast-overflow-6.c: New test.
* c-c++-common/ubsan/float-cast-overflow-7.c: New test.
* c-c++-common/ubsan/float-cast-overflow-7.h: New file.
* c-c++-common/ubsan/float-cast-overflow-8.c: New test.
* c-c++-common/ubsan/float-cast-overflow-9.c: New test.
* c-c++-common/ubsan/float-cast.h: New file.
* g++.dg/ubsan/float-cast-overflow-bf.C: New test.
* gcc.dg/ubsan/float-cast-overflow-bf.c: New test.
libsanitizer/
* ubsan/ubsan_value.cc (getFloatValue): Handle 96-bit
floating-point types.
Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r210862
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index dbb6af6..34ba721 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -5427,6 +5427,13 @@ Detect floating-point division by zero. Unlike other similar options, @option{-fsanitize=undefined}, since floating-point division by zero can be a legitimate way of obtaining infinities and NaNs. +@item -fsanitize=float-cast-overflow +@opindex fsanitize=float-cast-overflow + +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-recover @opindex fsanitize-recover By default @option{-fsanitize=undefined} sanitization (and its suboptions |