Files
FEX-Emu--FEX/unittests
Pepper Gray c548262664 include missing header unistd.h
build on clang/musl fails with:

```
FEX/unittests/APITests/Allocator.cpp:17:5: error: use of undeclared identifier 'close'
FEX/unittests/APITests/Allocator.cpp:23:5: error: use of undeclared identifier 'lseek'; did you mean 'fseek'?
FEX/unittests/APITests/Allocator.cpp:23:11: error: cannot initialize a parameter of type 'FILE *' (aka 'struct _IO_FILE *') with an lvalue of type 'int'
FEX/unittests/APITests/Allocator.cpp:24:5: error: use of undeclared identifier 'write'; did you mean '_IO_cookie_io_functions_t::write'?
FEX/unittests/APITests/Allocator.cpp:24:5: error: invalid use of non-static data member 'write'
```

include header to provide defintions

fix: #5476
Signed-off-by: Pepper Gray <hello@peppergray.xyz>
2026-05-03 15:49:40 +02:00
..
2026-05-03 15:49:40 +02:00
2020-08-21 01:29:37 +12:00
2025-09-15 13:06:48 -07:00

FEX Unit tests

FEX has its own test suite for x86-64 emulation, and we also use gcc's target tests, posixtest, and gvisor's tests. We use a combination of CMake/CTest and python runner scripts.

We also regularly run and pass qemu's and valgrind's tests for validation, but those aren't in CI right now.

x86/64 testing

  • A lot of handwritten assembly unit tests in 32Bit_ASM and ASM folders, run via our TestHarnessHelper
  • A few handwritten IR tests in IR, run via our IRLoader
  • gcc-target-tests-32 and gcc-target-tests-64, run via FEX. The tests binaries are in External/fex-gcc-target-tests-bins

Syscall testing