diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 089661b..e0afc269 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -10290,6 +10290,10 @@ is greater or equal to this number, use callbacks instead of inline checks. E.g. to disable inline code use @option{--param asan-instrumentation-with-call-threshold=0}. +@item use-after-scope-direct-emission-threshold +If size of a local variables in bytes is smaller of equal to this number, +direct instruction emission is utilized to poison and unpoison local variables. + @item chkp-max-ctor-size Static constructors generated by Pointer Bounds Checker may become very large and significantly increase compile time at optimization level @@ -10500,6 +10504,7 @@ thread-safe code. Enable AddressSanitizer, a fast memory error detector. Memory access instructions are instrumented to detect out-of-bounds and use-after-free bugs. +The option enables @option{-fsanitize-address-use-after-scope}. See @uref{https://github.com/google/sanitizers/wiki/AddressSanitizer} for more details. The run-time behavior can be influenced using the @env{ASAN_OPTIONS} environment variable. When set to @code{help=1}, @@ -10511,6 +10516,7 @@ The option can't be combined with @option{-fsanitize=thread}. @item -fsanitize=kernel-address @opindex fsanitize=kernel-address Enable AddressSanitizer for Linux kernel. +The option enables @option{-fsanitize-address-use-after-scope}. See @uref{https://github.com/google/kasan/wiki} for more details. @item -fsanitize=thread @@ -10710,8 +10716,8 @@ except for @option{-fsanitize=unreachable} and @option{-fsanitize=return}), @option{-fsanitize=float-cast-overflow}, @option{-fsanitize=float-divide-by-zero}, @option{-fsanitize=bounds-strict}, @option{-fsanitize=kernel-address} and @option{-fsanitize=address}. -For these sanitizers error recovery is turned on by default, except @option{-fsanitize=address}, -for which this feature is experimental. +For these sanitizers error recovery is turned on by default, +except @option{-fsanitize=address}, for which this feature is experimental. @option{-fsanitize-recover=all} and @option{-fno-sanitize-recover=all} is also accepted, the former enables recovery for all sanitizers that support it, the latter disables recovery for all sanitizers that support it. @@ -10733,6 +10739,11 @@ Similarly @option{-fno-sanitize-recover} is equivalent to -fno-sanitize-recover=undefined,float-cast-overflow,float-divide-by-zero,bounds-strict @end smallexample +@item -fsanitize-address-use-after-scope +@opindex fsanitize-address-use-after-scope +Enable sanitization of local variables to detect use-after-scope bugs. +The option sets @option{-fstack-reuse} to @samp{none}. + @item -fsanitize-undefined-trap-on-error @opindex fsanitize-undefined-trap-on-error The @option{-fsanitize-undefined-trap-on-error} option instructs the compiler to |