[Bug middle-end/44786] -fsanitize=undefined: Turn on runtime code generation to check for undefined behavior

["vincent-gcc at vinc17 dot net" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44786

Vincent Lefèvre <vincent-gcc at vinc17 dot net> changed:

           What    |Removed                     |Added
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                 CC|                            |vincent-gcc at vinc17 dot net

--- Comment #8 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> ---
GCC 4.9, which has just been released, has -fsanitize=undefined (and some other
-fsanitize checks):

http://gcc.gnu.org/onlinedocs/gcc-4.9.0/gcc/Debugging-Options.html#Debugging-Options

However it only gives a runtime diagnostic message. It basically lacks clang's
-fno-sanitize-recover option to make the program abort (useful for test
suites). After that, I suppose that this enhancement would be complete (it
doesn't check all kinds of undefined behavior, such as the use of uninitialized
variables, but clang doesn't do this either).
>From gcc-bugs-return-449859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Apr 25 08:23:28 2014
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/60156] GCC doesn't warn about variadic main
Date: Fri, 25 Apr 2014 08:23:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`156

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Apr 25 08:22:47 2014
New Revision: 209787

URL: http://gcc.gnu.org/viewcvs?rev 9787&root=gcc&view=rev
Log:
    PR c/60156
    * c-common.c (check_main_parameter_types): Warn about variadic main.

    * c-c++-common/pr60156.c: New test.


Added:
    trunk/gcc/testsuite/c-c++-common/pr60156.c
Modified:
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-common.c
    trunk/gcc/testsuite/ChangeLog