From 666b9f8f7b0c17696139b3a42c51ad39f1bfa5d8 Mon Sep 17 00:00:00 2001
From: ISSOtm <eldredhabert0@gmail.com>
Date: Tue, 24 Mar 2020 10:52:45 +0100
Subject: [PATCH] Add tests for purging symbols

---
 test/asm/purge-refs.asm | 13 +++++++++++++
 test/asm/purge-refs.err |  3 +++
 test/asm/purge-refs.out |  0
 test/asm/purge.asm      | 13 +++++++++++++
 test/asm/purge.err      |  3 +++
 test/asm/purge.out      |  0
 6 files changed, 32 insertions(+)
 create mode 100644 test/asm/purge-refs.asm
 create mode 100644 test/asm/purge-refs.err
 create mode 100644 test/asm/purge-refs.out
 create mode 100644 test/asm/purge.asm
 create mode 100644 test/asm/purge.err
 create mode 100644 test/asm/purge.out

diff --git a/test/asm/purge-refs.asm b/test/asm/purge-refs.asm
new file mode 100644
index 00000000..74dd56c6
--- /dev/null
+++ b/test/asm/purge-refs.asm
@@ -0,0 +1,13 @@
+
+SECTION "floating purging", ROM0
+
+Floating:
+	db Floating
+	PURGE Floating ; This used to cause a use-after-free
+	; To increase the chances of the data being re-allocated, it's not last
+
+SECTION "fixed purging", ROM0[0]
+
+Fixed:
+	db Fixed
+	PURGE Fixed ; Can work, it's a constant
diff --git a/test/asm/purge-refs.err b/test/asm/purge-refs.err
new file mode 100644
index 00000000..8ad27dec
--- /dev/null
+++ b/test/asm/purge-refs.err
@@ -0,0 +1,3 @@
+ERROR: purge-refs.asm(6):
+    Symbol "Floating" is referenced and thus cannot be purged
+error: Assembly aborted (1 errors)!
diff --git a/test/asm/purge-refs.out b/test/asm/purge-refs.out
new file mode 100644
index 00000000..e69de29b
diff --git a/test/asm/purge.asm b/test/asm/purge.asm
new file mode 100644
index 00000000..1552cea0
--- /dev/null
+++ b/test/asm/purge.asm
@@ -0,0 +1,13 @@
+
+SECTION "purging", ROM0
+
+Label:
+	PURGE Label
+Label:
+
+	db Referenced
+	PURGE Referenced ; Should fail
+
+Exported::
+	PURGE Exported
+Exported::
diff --git a/test/asm/purge.err b/test/asm/purge.err
new file mode 100644
index 00000000..74f81e69
--- /dev/null
+++ b/test/asm/purge.err
@@ -0,0 +1,3 @@
+ERROR: purge.asm(9):
+    Symbol "Referenced" is referenced and thus cannot be purged
+error: Assembly aborted (1 errors)!
diff --git a/test/asm/purge.out b/test/asm/purge.out
new file mode 100644
index 00000000..e69de29b