https://bugs.llvm.org/show_bug.cgi?id=44975
Bug ID: 44975
Summary: 'Segmentation fault: 11' in the special index for an
array
Product: clang
Version: 6.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: haoxi...@gmail.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
Hi, I am developing a random c generation tool to find c compiler bugs.
I found an interesting code that compiles successfully but get a "Segmentation
fault:11" result when executing it.
The c code is
void foo(int* a ) {
a[8]=1;
}
int main (int argc, char* argv[]) {
int array[] = {0};
foo(array);
return 0;
}
My compile command is "clang-6.0 test.cc" and it succeeds. Then I execute it
using "./a.out" but I got a "Segmentation fault:11" error.
I know we should initialize an array before using it. But the most interesting
thing is that only an index of 8 in a array can trigger the error, other index
is fine for execution.
I test the code in clang-3.8, clang-6.0, clang-7 in ubuntu16.04 and got the
same error.
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