macOS on Intel: floating point exception in munit_rand_int_range(), but only inside a test#94

Platform: macOS 12.6.7, MacBook Pro (16-inch, 2019), Intel i9 CPU, clang 13.1.6. A helper function which calls `munit_rand_int_range()`, called from a test, is raising signal 8 (SIGFPE, floating point exception). If I call the function from `main()`, prior to calling `munit_suite_main()` (i.e. outside the munit test environment), no problems are apparent when run from the command line, and the test suite runs normally (until the test in question). However, when running the same executable under lldb, all of the tests in the suite report ERROR. Under lldb, single-stepping through `munit_rand_int_range()` prior to calling `munit_suite_main()` doesn't seem to raise the signal. Breakpoints seem to be ignored inside a test. So I'm unable to debug further. The problem does not seem to occur in the munit example.c.