[llvm-bugs] [Bug 44290] New: Pointers defined by clang have default pointing values.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44290

            Bug ID: 44290
           Summary: Pointers defined by clang have default pointing
                    values.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C
          Assignee: unassignedclangbugs at nondot.org
          Reporter: 1059252359 at qq.com
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

Hi,
when I used clang9.0 and the latest version to output the value that
NISLParameter0 points to, they both outputed 1. While other compilers, such as
gcc and intelc,reported Segmentation fault.

TestCase:
#include<stdio.h>
int main(void)
{
    int *NISLParameter0;
    printf("%d\n", *NISLParameter0);
    return 0;
}

Command:
./clang/version_latest/llvm-project/build/bin/clang testcase.c
./a.out

Version:
clang9.0.0 && clang10.0.0

Output:
1

Expected output:
Segmentation fault

Is this right for the clang complier? Looking forward to your reply.

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