auto merge of #6286 : nikomatsakis/rust/issue-5910-dyna-freeze, r=nikomatsakis

This rather sprawling branch refactors the borrow checker and much of the region code, addressing a number of outstanding issues. I will close them manually after validating that there are test cases for each one, but here is a (probably partial) list:

  - #4903: Flow sensitivity
  - #3387: Moves in overloaded operators
  - #3850: Region granularity
  - #4666: Odd loaning errors
  - #6021: borrow check errors with hashmaps
  - #5910: @mut broken

cc #5047

(take 5)

1 files changed, 2 insertions, 0 deletions

diff --git a/src/rt/rust_env.cpp b/src/rt/rust_env.cpp
index 041b4efac52..360d6114928 100644
--- a/src/rt/rust_env.cpp
+++ b/src/rt/rust_env.cpp
@@ -24,6 +24,7 @@
 #define RUST_SEED "RUST_SEED"
 #define RUST_POISON_ON_FREE "RUST_POISON_ON_FREE"
 #define RUST_DEBUG_MEM "RUST_DEBUG_MEM"
+#define RUST_DEBUG_BORROW "RUST_DEBUG_BORROW"
 
 #if defined(__WIN32__)
 static int
@@ -130,6 +131,7 @@ load_env(int argc, char **argv) {
     env->argc = argc;
     env->argv = argv;
     env->debug_mem = getenv(RUST_DEBUG_MEM) != NULL;
+    env->debug_borrow = getenv(RUST_DEBUG_BORROW) != NULL;
     return env;
 }