llvm-project

b16e0126 - [flang-rt] Fix macOS build: define _DARWIN_C_SOURCE for mmap flags (#186142)

[flang-rt] Fix macOS build: define _DARWIN_C_SOURCE for mmap flags (#186142) On Darwin, `sys/mman.h` hides `MAP_JIT` and `MAP_ANON(YMOUS)` when `_POSIX_C_SOURCE` is defined unless `_DARWIN_C_SOURCE` is also defined. `trampoline.cpp` uses those flags, so this change defines `_DARWIN_C_SOURCE` before including `<sys/mman.h>` in this file. Fixes build failure reported in #183108. Co-authored-by: Sairudra More <moresair@pe31.hpc.amslabs.hpecorp.net>