[PATCH] D35778: Add NetBSD PaX MPROTECT support in allocateMappedMemory

[Kamil Rytarowski via Phabricator via llvm-commits]

krytarowski added a comment.

The following code triggers failure specific to NetBSD:

  $ cat mprotect.c                                                                                                               
  #include <sys/types.h>
  #include <sys/mman.h>
  #include <errno.h>
  #include <stdio.h>
  
  int
  main(int argc, char **argv)
  {
  	void *p = mmap(0, 0x1000, PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0);
  	int ret = mprotect(p, 0x1000, PROT_READ | PROT_WRITE);
  
  	printf("ret=%d errno=%d\n", ret, errno);
  
  	return 0;
  }
  $ ./a.out                                                                                                                      
  ret=-1 errno=13


Repository:
  rL LLVM

https://reviews.llvm.org/D35778