diff -Nru r-cran-rlang-0.2.1/debian/changelog r-cran-rlang-0.2.2/debian/changelog
--- r-cran-rlang-0.2.1/debian/changelog	2018-06-03 06:45:10.000000000 +0000
+++ r-cran-rlang-0.2.2/debian/changelog	2018-08-20 06:59:13.000000000 +0000
@@ -1,3 +1,10 @@
+r-cran-rlang (0.2.2-1) unstable; urgency=medium
+
+  * New upstream version
+  * Standards-Version: 4.2.0
+
+ -- Andreas Tille <tille@debian.org>  Mon, 20 Aug 2018 08:59:13 +0200
+
 r-cran-rlang (0.2.1-1) unstable; urgency=medium
 
   * New upstream version
diff -Nru r-cran-rlang-0.2.1/debian/control r-cran-rlang-0.2.2/debian/control
--- r-cran-rlang-0.2.1/debian/control	2018-06-03 06:45:10.000000000 +0000
+++ r-cran-rlang-0.2.2/debian/control	2018-08-20 06:59:13.000000000 +0000
@@ -6,7 +6,7 @@
 Build-Depends: debhelper (>= 11~),
                dh-r,
                r-base-dev
-Standards-Version: 4.1.4
+Standards-Version: 4.2.0
 Vcs-Browser: https://salsa.debian.org/r-pkg-team/r-cran-rlang
 Vcs-Git: https://salsa.debian.org/r-pkg-team/r-cran-rlang.git
 Homepage: https://cran.r-project.org/package=rlang
diff -Nru r-cran-rlang-0.2.1/DESCRIPTION r-cran-rlang-0.2.2/DESCRIPTION
--- r-cran-rlang-0.2.1/DESCRIPTION	2018-05-30 14:23:07.000000000 +0000
+++ r-cran-rlang-0.2.2/DESCRIPTION	2018-08-16 18:20:03.000000000 +0000
@@ -1,5 +1,5 @@
 Package: rlang
-Version: 0.2.1
+Version: 0.2.2
 Title: Functions for Base Types and Core R and 'Tidyverse' Features
 Description: A toolbox for working with base types, core R features
   like the condition system, and core 'Tidyverse' features like tidy
@@ -19,10 +19,10 @@
 URL: http://rlang.tidyverse.org, https://github.com/r-lib/rlang
 BugReports: https://github.com/r-lib/rlang/issues
 NeedsCompilation: yes
-Packaged: 2018-05-30 13:14:55 UTC; lionel
+Packaged: 2018-08-14 17:56:07 UTC; lionel
 Author: Lionel Henry [aut, cre],
   Hadley Wickham [aut],
   RStudio [cph]
 Maintainer: Lionel Henry <lionel@rstudio.com>
 Repository: CRAN
-Date/Publication: 2018-05-30 14:23:07 UTC
+Date/Publication: 2018-08-16 18:20:03 UTC
diff -Nru r-cran-rlang-0.2.1/MD5 r-cran-rlang-0.2.2/MD5
--- r-cran-rlang-0.2.1/MD5	2018-05-30 14:23:07.000000000 +0000
+++ r-cran-rlang-0.2.2/MD5	2018-08-16 18:20:03.000000000 +0000
@@ -1,6 +1,6 @@
-71407c1d03f289a82400d7c70d47238b *DESCRIPTION
+7229c46f0c93b3e32f5027fffe8eae48 *DESCRIPTION
 8986989469c97882d531b6b6505469fd *NAMESPACE
-296beb2972cf1195c6ca65ec3f38350f *NEWS.md
+d71765d80161768f00cfc5eb085931f6 *NEWS.md
 a8c92e452b5010861f5bf7e1ace18d3a *R/arg.R
 a9f036d8e6cf5329f46722c7eab184e2 *R/attr.R
 66261d131eecf6bd7155675cee18fb10 *R/c-api.R
@@ -200,7 +200,7 @@
 4276b74a748829a5d44c7bd030092a76 *man/with_handlers.Rd
 baef0a2bfaafceab310a424f60c0fd13 *man/with_restarts.Rd
 05c8f3ee0da0505c57bf0a07c1b5e06d *src/Makevars
-4207bede3a15215abaf8a36962c73457 *src/capture.c
+0a70be5c69b043affb1b3f20eb42f0a8 *src/capture.c
 372738f63854b1faa1e7dc2c3768a7b0 *src/export.c
 424bca744cf6aa17004d54f07912b5d1 *src/export/exported-tests.c
 d30b5c981d24549cd979723001a5a17a *src/export/exported.c
@@ -209,7 +209,7 @@
 87e61dd32ed6cb2def862f4df241125a *src/internal/arg.c
 9cd0edce26bd2fcc0ac0ebe7c87e5b3d *src/internal/dots.c
 d4b0254f76d5196e0823dbbcfab66320 *src/internal/dots.h
-780b52c10dcbae30104fd978850f214b *src/internal/eval-tidy.c
+f09dbbe1fab487bcd653a05e20d74cb8 *src/internal/eval-tidy.c
 4f59e263727c3af88c2dd0b9028673dc *src/internal/expr-interp-rotate.c
 d94334212a74d3d56e347d85675e5ea5 *src/internal/expr-interp-rotate.h
 4fbe3b8804dadd9b06974ce38067329e *src/internal/expr-interp.c
@@ -223,10 +223,10 @@
 43afc5909482baa8ebb7ad4e338c5c27 *src/lib.c
 beb904363b5b7873d995dbb16533224f *src/lib/attrs.c
 c7c852680c71570b08310d884734a3fd *src/lib/attrs.h
-4270bddc21541809a41abb22ef1cfde0 *src/lib/cnd.c
+61d9298e6850134971aafd5e5ead9443 *src/lib/cnd.c
 b0c4f991491e8541c9b9a1aa5c426075 *src/lib/cnd.h
 61240b6e58497c4c6691df5db385d2d2 *src/lib/debug.h
-b6fc14af43d3f2f840c85b2a3725098c *src/lib/env.c
+7dafc396fa261a308e5f3a369bf288ab *src/lib/env.c
 bdf0965c55e458bbf408eb8c4bdac5d2 *src/lib/env.h
 504c393f53f7aac9d951bfccd1abbdd5 *src/lib/eval.c
 bb39269899a1647fc0d5618ceada47c7 *src/lib/eval.h
@@ -249,9 +249,9 @@
 0118530a4c06ff62d039985b4bb95cd2 *src/lib/rlang.h
 3d22e89d63de6dbcb53c0352ca1f5bb7 *src/lib/sexp.c
 7d11a7e40ecf953e1ef093ef3977159e *src/lib/sexp.h
-1afb1bf096d7ee30850ab30618f9c6b9 *src/lib/squash.c
+b85b18ee719026afdf7cc61096599ab5 *src/lib/squash.c
 b21ec8fa3f3599696fd677b27631ab92 *src/lib/squash.h
-1bacf3a10138f51fad20f5ca9b8b7f94 *src/lib/stack.c
+3fe630336e23e2eddf1699ca19774c5b *src/lib/stack.c
 ca5ec968a58e31753b06ac34eaa04132 *src/lib/stack.h
 0b96cb0ff95091cf208b92a1a0b0f095 *src/lib/state.h
 bde789a0f2c185be4c1cea2413796697 *src/lib/sym-unescape.c
diff -Nru r-cran-rlang-0.2.1/NEWS.md r-cran-rlang-0.2.2/NEWS.md
--- r-cran-rlang-0.2.1/NEWS.md	2018-05-30 12:41:36.000000000 +0000
+++ r-cran-rlang-0.2.2/NEWS.md	2018-08-14 14:08:56.000000000 +0000
@@ -1,4 +1,10 @@
 
+# rlang 0.2.2
+
+This is a maintenance release that fixes several garbage collection
+protection issues.
+
+
 # rlang 0.2.1
 
 This is a maintenance release that fixes several tidy evaluation
diff -Nru r-cran-rlang-0.2.1/src/capture.c r-cran-rlang-0.2.2/src/capture.c
--- r-cran-rlang-0.2.1/src/capture.c	2018-05-30 13:14:55.000000000 +0000
+++ r-cran-rlang-0.2.2/src/capture.c	2018-08-14 17:56:07.000000000 +0000
@@ -50,30 +50,45 @@
 
 SEXP attribute_hidden rlang_capturearginfo(SEXP call, SEXP op, SEXP args, SEXP rho)
 {
+    int nProt = 0;
+
     // Unwrap first layer of promise
     SEXP sym = findVarInFrame3(rho, install("x"), TRUE);
+    PROTECT(sym); ++nProt;
 
     // May be a literal if compiler did not wrap in a promise
-    if (TYPEOF(sym) == PROMSXP)
-        sym = PREXPR(sym);
-    else
-        return new_captured_literal(sym);
+    if (TYPEOF(sym) != PROMSXP) {
+      SEXP value = new_captured_literal(sym);
+      UNPROTECT(nProt);
+      return value;
+    }
 
-    if (TYPEOF(sym) != SYMSXP)
+    sym = PREXPR(sym);
+
+    if (TYPEOF(sym) != SYMSXP) {
+        UNPROTECT(nProt);
         error(_("\"x\" must be an argument name"));
+    }
 
     SEXP frame = CAR(args);
     SEXP arg = findVar(sym, frame);
+    PROTECT(arg); ++nProt;
 
-    if (arg == R_UnboundValue)
+    if (arg == R_UnboundValue) {
+        UNPROTECT(nProt);
         error(_("object '%s' not found"), CHAR(PRINTNAME(sym)));
+    }
 
+    SEXP value;
     if (arg == R_MissingArg)
-        return new_captured_literal(arg);
+        value = new_captured_literal(arg);
     else if (TYPEOF(arg) == PROMSXP)
-        return new_captured_promise(arg, frame);
+        value = new_captured_promise(arg, frame);
     else
-        return new_captured_literal(arg);
+        value = new_captured_literal(arg);
+
+    UNPROTECT(nProt);
+    return value;
 }
 
 SEXP capturedots(SEXP frame) {
diff -Nru r-cran-rlang-0.2.1/src/internal/eval-tidy.c r-cran-rlang-0.2.2/src/internal/eval-tidy.c
--- r-cran-rlang-0.2.1/src/internal/eval-tidy.c	2018-05-30 13:14:55.000000000 +0000
+++ r-cran-rlang-0.2.2/src/internal/eval-tidy.c	2018-08-14 17:56:07.000000000 +0000
@@ -348,10 +348,11 @@
   // for quosure thunks. Otherwise we create a heavier data mask with
   // all the masking objects, data pronouns, etc.
   if (data == r_null) {
-    mask = new_quosure_mask(env);
+    mask = KEEP(new_quosure_mask(env));
   } else {
-    mask = rlang_as_data_mask(data, env);
+    mask = KEEP(rlang_as_data_mask(data, env));
   }
+  ++n_protect;
 
   sexp* out = r_eval(expr, mask);
   FREE(n_protect);
diff -Nru r-cran-rlang-0.2.1/src/lib/cnd.c r-cran-rlang-0.2.2/src/lib/cnd.c
--- r-cran-rlang-0.2.1/src/lib/cnd.c	2018-05-30 13:14:55.000000000 +0000
+++ r-cran-rlang-0.2.2/src/lib/cnd.c	2018-08-14 17:56:07.000000000 +0000
@@ -83,9 +83,9 @@
   r_vec_poke_n(cnd, 1, data, 0, r_length(cnd) - 1);
 
   r_poke_names(cnd, KEEP(new_condition_names(data)));
-  r_poke_class(cnd, KEEP(chr_append(type, r_string("condition"))));
+  r_poke_class(cnd, KEEP(chr_append(type, KEEP(r_string("condition")))));
 
-  FREE(3);
+  FREE(4);
   return cnd;
 }
 
diff -Nru r-cran-rlang-0.2.1/src/lib/env.c r-cran-rlang-0.2.2/src/lib/env.c
--- r-cran-rlang-0.2.1/src/lib/env.c	2018-05-30 13:14:55.000000000 +0000
+++ r-cran-rlang-0.2.2/src/lib/env.c	2018-08-14 17:56:07.000000000 +0000
@@ -21,14 +21,18 @@
 
   return obj;
 }
-sexp* rlang_ns_get(const char* name) {
-  return ns_env_get(r_ns_env("rlang"), name);
-}
 sexp* r_base_ns_get(const char* name) {
   return ns_env_get(r_base_env, name);
 }
 
 
+static sexp* rlang_ns_env = NULL;
+
+sexp* rlang_ns_get(const char* name) {
+  return ns_env_get(rlang_ns_env, name);
+}
+
+
 static sexp* new_env_call = NULL;
 
 sexp* r_new_environment(sexp* parent, r_ssize_t size) {
@@ -179,4 +183,6 @@
   remove_call = r_new_call_node(r_base_ns_get("remove"), remove_args);
   r_mark_precious(remove_call);
   FREE(4);
+
+  rlang_ns_env = r_ns_env("rlang");
 }
diff -Nru r-cran-rlang-0.2.1/src/lib/squash.c r-cran-rlang-0.2.2/src/lib/squash.c
--- r-cran-rlang-0.2.1/src/lib/squash.c	2018-05-30 13:14:55.000000000 +0000
+++ r-cran-rlang-0.2.2/src/lib/squash.c	2018-08-14 17:56:07.000000000 +0000
@@ -164,7 +164,9 @@
 
   sexp* out = KEEP(r_new_vector(kind, info.size));
   if (info.named) {
-    r_poke_names(out, r_new_vector(STRSXP, info.size));
+    sexp* nms = KEEP(r_new_vector(r_type_character, info.size));
+    r_poke_names(out, nms);
+    FREE(1);
   }
 
   if (recursive) {
diff -Nru r-cran-rlang-0.2.1/src/lib/stack.c r-cran-rlang-0.2.2/src/lib/stack.c
--- r-cran-rlang-0.2.1/src/lib/stack.c	2018-05-30 13:14:55.000000000 +0000
+++ r-cran-rlang-0.2.2/src/lib/stack.c	2018-08-14 17:56:07.000000000 +0000
@@ -24,27 +24,37 @@
 }
 
 
-sexp* sys_frame_call = NULL;
-sexp* sys_call_call = NULL;
+static sexp* sys_frame_call = NULL;
+static sexp* sys_call_call = NULL;
 
-int* sys_frame_n_addr = NULL;
-int* sys_call_n_addr = NULL;
+static int* sys_frame_n_addr = NULL;
+static int* sys_call_n_addr = NULL;
 
 sexp* r_sys_frame(int n, sexp* frame) {
+  int n_protect = 0;
   if (!frame) {
     frame = r_current_frame();
+    KEEP_N(frame, n_protect);
   }
 
   *sys_frame_n_addr = n;
-  return r_eval(sys_frame_call, frame);
+  SEXP value = r_eval(sys_frame_call, frame);
+
+  FREE(n_protect);
+  return value;
 }
 sexp* r_sys_call(int n, sexp* frame) {
+  int n_protect = 0;
   if (!frame) {
     frame = r_current_frame();
+    KEEP_N(frame, n_protect);
   }
 
   *sys_call_n_addr = n;
-  return r_eval(sys_call_call, frame);
+  SEXP value = r_eval(sys_call_call, frame);
+
+  FREE(n_protect);
+  return value;
 }