From 384defd0a472a1c06fc7f1f92cfb3d373e586b0e Mon Sep 17 00:00:00 2001
From: Chao Jia <chao.cj.jia@gmail.com>
Date: Mon, 25 Nov 2019 23:04:35 +0100
Subject: fix uninitialized local variable

---
 ports/rply/fix-uninitialized-local-variable.patch | 22 ++++++++++++++++++++++
 ports/rply/portfile.cmake                         |  4 +++-
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 ports/rply/fix-uninitialized-local-variable.patch

diff --git a/ports/rply/fix-uninitialized-local-variable.patch b/ports/rply/fix-uninitialized-local-variable.patch
new file mode 100644
index 000000000..f23ad8450
--- /dev/null
+++ b/ports/rply/fix-uninitialized-local-variable.patch
@@ -0,0 +1,22 @@
+diff --git a/rply.c b/rply.c
+index c4105ef..7c7e72a 100644
+--- a/rply.c
++++ b/rply.c
+@@ -372,7 +372,7 @@ p_ply ply_open(const char *name, p_ply_error_cb error_cb,
+ 
+ p_ply ply_open_from_file(FILE *fp, p_ply_error_cb error_cb,
+         long idata, void *pdata) {
+-    p_ply ply;
++    p_ply ply = NULL;
+     if (error_cb == NULL) error_cb = ply_error_cb;
+     assert(fp);
+     if (!ply_type_check()) {
+@@ -475,7 +475,7 @@ p_ply ply_create(const char *name, e_ply_storage_mode storage_mode,
+ 
+ p_ply ply_create_to_file(FILE *fp, e_ply_storage_mode storage_mode,
+         p_ply_error_cb error_cb, long idata, void *pdata) {
+-    p_ply ply;
++    p_ply ply = NULL;
+     assert(fp && storage_mode <= PLY_DEFAULT);
+     if (!ply_type_check()) {
+         error_cb(ply, "Incompatible type system");
diff --git a/ports/rply/portfile.cmake b/ports/rply/portfile.cmake
index 135dc0fda..6c3c5e711 100644
--- a/ports/rply/portfile.cmake
+++ b/ports/rply/portfile.cmake
@@ -10,8 +10,10 @@ vcpkg_download_distfile(ARCHIVE
 
 vcpkg_extract_source_archive_ex(
     OUT_SOURCE_PATH SOURCE_PATH
-    ARCHIVE ${ARCHIVE} 
+    ARCHIVE ${ARCHIVE}
     REF ${VERSION}
+    PATCHES
+        fix-uninitialized-local-variable.patch
 )
 
 file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
-- 
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