On macos, using version 1.7.0-rc2, julia just shows StackOverflowError with no other info when taking the matrix exp with a ~ 300x300 complex-valued matrix. Minimum example:

using LinearAlgebra

n = 300
m = rand(ComplexF64, n, n);
mex = exp(m);

Alro ran with --startup-file=no to make sure it's not some clash with other packages.

my versioninfo():

Julia Version 1.7.0-rc2
Commit f23fc0d27a (2021-10-20 12:45 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin19.5.0)
  CPU: Intel(R) Core(TM) i5-8259U CPU @ 2.30GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-12.0.1 (ORCJIT, skylake)
Environment:
  JULIA_MATHLINK = /Applications/Mathematica.app/Contents/Frameworks/mathlink.framework
  JULIA_MATHKERNEL = /Applications/Mathematica.app/Contents/MacOS/MathKernel

Same code runs fine with Version 1.6.3 (2021-09-23).

Hardware: Macbook pro (intel) with 16 GB ram, activity monitor shows low memory usage.

In addition, the same code sometimes gives ERROR: LoadError: ReadOnlyMemoryError(), not sure how to reproduce that one...

Thanks!