[llvm-bugs] [Bug 28789] New: Uninitialized memory read in printf is not detected by memory sanitizer

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28789

            Bug ID: 28789
           Summary: Uninitialized memory read in printf is not detected by
                    memory sanitizer
           Product: clang
           Version: 3.8
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: halyavin at chromium.org
                CC: kcc at google.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

The following program doesn't crash when compiled with memory sanitizer
(without libc instrumentation).

#include <stdio.h>
int main() {
    int x = 1;
    printf("%lld %lld %lld %lld %lld %lld\n", x, x, x, x, x, x);
}

It prints "1 1 1 1 1 <huge_number>" but sanitizer is silent.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20160731/4579fb54/attachment.html>