[BUG] Segmentation fault when getting list of values from tuple

[ltjkoomen]

Bug description

I get a segmentation fault when trying to get a list of value structs from a tuple. I believe the ability to get such items from a tuple was added recently when solving this issue: #1187 , so perhaps something went wrong there?

I've included a minimal example below.

Steps to reproduce

Include relevant code snippet or link to code that did not work as expected.
I've come to this minimal example of the issue:

@value
struct Foo:
    var x: Int32


fn some_func() -> Tuple[List[Foo]]:
    var foos = List[Foo]()
    foos.append(Foo(0))
    foos.append(Foo(0))
    return (foos,)


fn main():
    for i in range(12):
        var out = some_func()
        var foos = out.get[0, List[Foo]]()

The issue seems sensitive to the amount of times I do .append in some_func, the number of times I iterate in the loop, and the type of Foo.x:

• With only a single .append I don't get the crash
• Per type of Foo.x I get the following minimum number of iterations before it crashes:
  • Int and Int64: 7
  • Int16 and Int32: 12

If applicable, add screenshots to help explain the problem.
Not applicable.
If using the Playground, name the pre-existing notebook that failed and the steps that led to failure.
Not applicable.
Include anything else that might help us debug the issue.
This is the stack dump I get:

Please submit a bug report to https://github.com/modularml/mojo/issues and include the crash backtrace along with all the relevant source codes.
Stack dump:
0.      Program arguments: mojo issue.mojo
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  mojo                               0x00005e276a98c407
1  mojo                               0x00005e276a98a25e
2  mojo                               0x00005e276a98ca9f
3  libc.so.6                          0x00007e14d8842520
4  mojo                               0x00005e276c1593d6
5  mojo                               0x00005e276c169104
6  mojo                               0x00005e276c1692e8
7  mojo                               0x00005e276c168364
8  mojo                               0x00005e276c16815b
9  mojo                               0x00005e276cdb9ece
10 libKGENCompilerRTShared.so.19.0git 0x00007e14ccc3b848 KGEN_CompilerRT_AlignedFree + 104
11 libKGENCompilerRTShared.so.19.0git 0x00007e14840011fc KGEN_CompilerRT_AlignedFree + 18446744072488770076
mojo crashed!
Please file a bug report.
[1]    40994 segmentation fault (core dumped)  mojo issue.mojo

System information

- What OS did you do install Mojo on ?
Linux 6.5.0-28-generic #29~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr 4 14:39:20 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
- Provide version information for Mojo by pasting the output of `mojo -v`
mojo 24.3.0 (9882e19d)
- Provide Modular CLI version by pasting the output of `modular -v`
modular 0.7.4 (df7a9e8b)