From bca00c65dddb926df9aa7488502e16ea20020cb3 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vz-swig@zeitlins.org>
Date: Sat, 23 Apr 2016 01:30:35 +0200
Subject: [PATCH] Implement cdata typemaps for C

Just use the struct directly in the C wrappers.
---
 Examples/test-suite/c/Makefile.in |  1 -
 Lib/cdata.i                       | 22 ++++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/Examples/test-suite/c/Makefile.in b/Examples/test-suite/c/Makefile.in
index c3175ae5d..b4b80a2d3 100644
--- a/Examples/test-suite/c/Makefile.in
+++ b/Examples/test-suite/c/Makefile.in
@@ -33,7 +33,6 @@ FAILING_C_TESTS := \
     function_typedef \
     lextype \
     li_carrays \
-    li_cdata \
     li_cpointer \
     nested \
     nested_extend_c \
diff --git a/Lib/cdata.i b/Lib/cdata.i
index b9b8e1887..23e552cf9 100644
--- a/Lib/cdata.i
+++ b/Lib/cdata.i
@@ -21,6 +21,28 @@ typedef struct SWIGCDATA {
 }
 %typemap(in) (const void *indata, int inlen) = (char *STRING, int LENGTH);
 
+#elif SWIGC
+
+%insert("cheader") {
+typedef struct SWIGCDATA {
+    char *data;
+    int   len;
+} SWIGCDATA;
+}
+
+%typemap(ctype) SWIGCDATA "SWIGCDATA"
+%typemap(cppouttype) SWIGCDATA "SWIGCDATA"
+
+%typemap(out) SWIGCDATA {
+    $result = $1;
+}
+
+%typemap(ctype) (const void *indata, int inlen) "const SWIGCDATA*"
+%typemap(in) (const void *indata, int inlen) {
+    $1 = $input->data;
+    $2 = $input->len;
+}
+
 #elif SWIGCHICKEN
 
 %typemap(out) SWIGCDATA {