[Bug 40943] New: lldb crashes (on linux) when debugging optimized code (-O2)

Subprojects LLDB
1

Bug ID 40943
Summary lldb crashes (on linux) when debugging optimized code (-O2)
Product lldb
Version unspecified
Hardware PC
OS All
Status NEW
Severity enhancement
Priority P
Component All Bugs
Assignee lldb-dev@lists.llvm.org
Reporter davide@freebsd.org
CC aprantl@apple.com, labath@google.com, llvm-bugs@lists.llvm.org, zturner@google.com

$ cat  outer.c
void optimize_me_not() {}

$ cat abc.c
a;
main() {
  optimize_me_not();
  {
    int b[1];
    b[0] = 1;
    a = 0;
  }
}

$ clang-trunk abc.c /home/davide/reduce-crash/outer.c -g -O2 -o a.out
$

$ cat cmds
b 3
r
kill
quit

$ lldb-trunk a.out -s cmds -b
(lldb) target create "a.out"
Current executable set to 'a.out' (x86_64).
(lldb) command source -s 0 'cmds'
Executing commands in '/home/davide/reduce-crash/cmds'.
Segmentation fault (core dumped)

$ clang-trunk --version
clang version 9.0.0 (trunk 355281)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin

$ lldb-trunk --version
lldb version 9.0.0 ([https://llvm.org/svn/llvm-project/lldb/trunk](https://llvm.org/svn/llvm-project/lldb/trunk) revision
355281)
  clang revision 355281
  llvm revision 355281

$ uname -a
Linux 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64
x86_64 x86_64 GNU/Linux