On Tue, Oct 21, 2014 at 02:09:14PM +0400, Andrey Ryabinin wrote: > On 10/21/2014 01:47 PM, Peter Zijlstra wrote: > > On Mon, Oct 20, 2014 at 02:54:59PM +0400, Andrey Ryabinin wrote: > >> > >> UBSan uses compile-time instrumentation to catch undefined behavior (UB). > >> Compiler inserts code that perform certain kinds of > >> checks before operations that could cause UB. > >> If check fails (i.e. UB detected) __ubsan_handle_* function called. > >> to print error message. > >> > >> So the most of the work is done by compiler. > >> This patch just implements ubsan handlers printing errors. > >> > >> GCC supports this since 4.9, however upcoming GCC 5.0 has > >> more checkers implemented. > > > > It might be useful if you've got a link to the relevant GCC > > documentation of this new shiny stuf. > > > > Documentation is very brief (look for fsanitize=undefined): https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html > GCC 4.9.1 doc: https://gcc.gnu.org/onlinedocs/gcc-4.9.1/gcc/Debugging-Options.html > > And there is an article which might be interesting: http://developerblog.redhat.com/2014/10/16/gcc-undefined-behavior-sanitizer-ubsan/ Thanks, please consider including these in the changelog of future postings of this patch set. -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
