Update README.md

Fix bug in error checking for mmap
2019-08-02 16:18:23 -07:00 · 2019-08-02 16:18:23 -07:00 · 3743f6f013
parent b0f3d11128
commit 3743f6f013
1 changed files with 1 additions and 1 deletions
--- a/README.md
+++ b/README.md
@ -398,7 +398,7 @@ fn compile_identity(void) {
                      MAP_PRIVATE | MAP_ANONYMOUS,
                      -1,               // fd (not used here)
                      0);               // offset (not used here)
-  if (!memory) {
+  if (memory == MAP_FAILED) {
    perror("failed to allocate memory");
    exit(1);
  }