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From: "jan.smets@alcatel-lucent.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/60861] New: out of bounds access of  global var in .rodata/.bss not detected
Date: Wed, 16 Apr 2014 15:17:00 -0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: sanitizer
X-Bugzilla-Version: 4.8.2
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60861

            Bug ID: 60861
           Summary: out of bounds access of  global var in .rodata/.bss
                    not detected
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jan.smets@alcatel-lucent.com
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org

gcc version 4.8.2 (Debian 4.8.2-16) 
gcc test.c -O2 -fsanitize=address -o test 

int depth = 3;

//int testGlobalOutOfBoundsRODATAVar[2] = {1}; /* data: works
(asan_report_load4 present) */
const int testGlobalOutOfBoundsRODATAVar[1] = {1}; /* rodata: doesn't work (no
asan_report_load4 present) */
//int testGlobalOutOfBoundsRODATAVar[1] = {0}; /* bss : works
(asan_report_load4 present) */
//int testGlobalOutOfBoundsRODATAVar[1];  /* bss : doesn't work !???
(asan_report_load4 present!)  */


int test(void)
{
    return testGlobalOutOfBoundsRODATAVar[depth]; // boom
}

int main(void)
{
    return test();
}