diff --git a/lib/std/collections/list.c3 b/lib/std/collections/list.c3
index 0c740a3dc..c6e47ffcb 100644
--- a/lib/std/collections/list.c3
+++ b/lib/std/collections/list.c3
@@ -123,7 +123,7 @@ fn String List.to_tstring(&self)
 
 fn void List.push(&self, Type element) @inline
 {
-	self.ensure_capacity();
+	self.reserve(1);
 	self.entries[self.size++] = element;
 }
 
@@ -244,7 +244,7 @@ fn void List.push_front(&self, Type type) @inline
  **/
 fn void List.insert_at(&self, usz index, Type type)
 {
-	self.ensure_capacity();
+	self.reserve(1);
 	for (usz i = self.size; i > index; i--)
 	{
 		self.entries[i] = self.entries[i - 1];
@@ -401,10 +401,7 @@ macro usz List._remove_using_test(&self, ElementTest filter, bool $invert, ctx)
 	return size - self.size;
 }
 
-/**
- * Reserve at least min_capacity
- **/
-fn void List.reserve(&self, usz min_capacity)
+fn void List.ensure_capacity(&self, usz min_capacity) @local
 {
 	if (!min_capacity) return;
 	if (self.capacity >= min_capacity) return;
@@ -433,7 +430,7 @@ fn void List.set(&self, usz index, Type value) @operator([]=)
 	self.entries[index] = value;
 }
 
-fn void List.ensure_capacity(&self, usz added = 1) @inline @private
+fn void List.reserve(&self, usz added)
 {
 	usz new_size = self.size + added;
 	if (self.capacity >= new_size) return;
@@ -441,7 +438,7 @@ fn void List.ensure_capacity(&self, usz added = 1) @inline @private
 	assert(new_size < usz.max / 2U);
 	usz new_capacity = self.capacity ? 2U * self.capacity : 16U;
 	while (new_capacity < new_size) new_capacity *= 2U;
-	self.reserve(new_capacity);
+	self.ensure_capacity(new_capacity);
 }
 
 // Functions for equatable types
diff --git a/releasenotes.md b/releasenotes.md
index 7ffeff338..fa60eb8ba 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -37,6 +37,7 @@
 - Distinct func type would not accept direct function address assign. #1287
 - Distinct inline would not implement protocol if the inlined implemented it. #1292
 - Distinct inline can now be called if it is aliasing a function pointer.
+- Bug in List add_array when reserving memory.
 
 ### Stdlib changes
 
diff --git a/src/compiler/subprocess.c b/src/compiler/subprocess.c
index 3d7646a97..f1ea84cc7 100644
--- a/src/compiler/subprocess.c
+++ b/src/compiler/subprocess.c
@@ -99,38 +99,42 @@ int run_subprocess(const char *name, const char **args)
 	return exit_status;
 #else
 	pid_t cpid = fork();
-	if (cpid < 0) {
-		eprintf("Could not fork child process %s: %s", name, strerror(errno));
+	if (cpid < 0)
+	{
+		eprintf("Could not fork child process %s: %s\n", name, strerror(errno));
 		return -1;
 	}
 
-	if (cpid == 0) {
+	if (cpid == 0)
+	{
 		const char **args_null = NULL;
 		vec_add(args_null, name);
-		for (uint32_t i = 0; i < vec_size(args); ++i) {
+		for (uint32_t i = 0; i < vec_size(args); ++i)
+		{
 			vec_add(args_null, args[i]);
 		}
 		vec_add(args_null, NULL);
-
-		if (execvp(name, (char * const*)args_null) < 0) {
-			eprintf("Could not exec child process %s: %s", name, strerror(errno));
+		if (execvp(name, (char *const *)args_null) < 0)
+		{
+			eprintf("Could not exec child process %s: %s\n", name, strerror(errno));
 			exit(1);
 		}
-		UNREACHABLE
+		exit(0);
 	}
 
-	for (;;) {
+	for (;;)
+	{
 		int wstatus = 0;
-		if (waitpid(cpid, &wstatus, 0) < 0) {
-			eprintf("Could not wait on %s (pid %d): %s", name, cpid, strerror(errno));
+		if (waitpid(cpid, &wstatus, 0) < 0)
+		{
+			eprintf("Could not wait on %s (pid %d): %s\n", name, cpid, strerror(errno));
 			return -1;
 		}
 
-		if (WIFEXITED(wstatus)) {
-			return WEXITSTATUS(wstatus);
-		}
+		if (WIFEXITED(wstatus)) return WEXITSTATUS(wstatus);
 
-		if (WIFSIGNALED(wstatus)) {
+		if (WIFSIGNALED(wstatus))
+		{
 			eprintf("Program interrupted by signal %d.\n", WTERMSIG(wstatus));
 			return -1;
 		}