Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 383 by [email protected]: No redzone created before first
global
https://code.google.com/p/address-sanitizer/issues/detail?id=383
AddressSanitizer does not seem to create a redzone before the first global
variable. Consider the following example:
int global1 = 123;
int global2 = 456;
int main()
{
int v = *(&global1 - 1);
return 0;
}
ASAN does not catch the invalid read because no readzone exists before
global1. Reading from &global2 - 1 does trigger an ASAN error report. Is
this expected behaviour? I build with Clang 3.5 on a Ubuntu 14.04 x64
installation: clang -fsanitize=address -g -O0 test.c
Thanks!
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