diff options
| -rw-r--r-- | src/libexpr/attr-set.cc | 3 | ||||
| -rw-r--r-- | src/libexpr/eval.cc | 7 |
2 files changed, 5 insertions, 5 deletions
diff --git a/src/libexpr/attr-set.cc b/src/libexpr/attr-set.cc index 910428c02686..b284daa3c2f7 100644 --- a/src/libexpr/attr-set.cc +++ b/src/libexpr/attr-set.cc @@ -7,13 +7,14 @@ namespace nix { +/* Note: Various places expect the allocated memory to be zeroed. */ static void * allocBytes(size_t n) { void * p; #if HAVE_BOEHMGC p = GC_malloc(n); #else - p = malloc(n); + p = calloc(n, 1); #endif if (!p) throw std::bad_alloc(); return p; diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc index b94bc597b013..48542d8e5006 100644 --- a/src/libexpr/eval.cc +++ b/src/libexpr/eval.cc @@ -43,13 +43,14 @@ static char * dupString(const char * s) } +/* Note: Various places expect the allocated memory to be zeroed. */ static void * allocBytes(size_t n) { void * p; #if HAVE_BOEHMGC p = GC_malloc(n); #else - p = malloc(n); + p = calloc(n, 1); #endif if (!p) throw std::bad_alloc(); return p; @@ -582,9 +583,7 @@ Env & EvalState::allocEnv(unsigned int size) Env * env = (Env *) allocBytes(sizeof(Env) + size * sizeof(Value *)); env->size = size; - /* Clear the values because maybeThunk() and lookupVar fromWith expect this. */ - for (unsigned i = 0; i < size; ++i) - env->values[i] = 0; + /* We assume that env->values has been cleared by the allocator; maybeThunk() and lookupVar fromWith expect this. */ return *env; } |