From dadafa43a32942c0434d71e7e557739711e882c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20H=C3=BCttel?= <mario.huettel@gmx.net>
Date: Thu, 30 May 2019 14:49:35 +0200
Subject: [PATCH] Work around issue #16. This is not very beatiful.

---
 cairo-renderer/cairo-output.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/cairo-renderer/cairo-output.c b/cairo-renderer/cairo-output.c
index 20908cc..5ee1897 100644
--- a/cairo-renderer/cairo-output.c
+++ b/cairo-renderer/cairo-output.c
@@ -33,6 +33,8 @@
 #include <cairo-svg.h>
 
 #include <gds-render/cairo-renderer/cairo-output.h>
+#include <sys/wait.h>
+#include <unistd.h>
 
 /**
  * @brief The cairo_layer struct
@@ -190,12 +192,26 @@ void cairo_render_cell_to_vector_file(struct gds_cell *cell, GList *layer_infos,
 	int i;
 	double rec_x0, rec_y0, rec_width, rec_height;
 	double xmin = INT32_MAX, xmax = INT32_MIN, ymin = INT32_MAX, ymax = INT32_MIN;
+	pid_t process_id;
 
 	if (pdf_file == NULL && svg_file == NULL) {
 		/* No output specified */
 		return;
 	}
 
+	/* Fork to a new child process. This ensures the memory leaks (see issue #16) in Cairo don't
+	 * brick everything.
+	 *
+	 * And by the way: This now bricks all Windows compatibility. Deal with it.
+	 */
+	process_id = fork();
+	if (process_id < 0) {
+		/* Well... shit... We have to run it in our process. */
+	} else if (process_id > 0) {
+		/* Woohoo... Successfully dumped the shitty code to a unknowing victim */
+		goto ret_parent;
+	}
+
 	layers = (struct cairo_layer *)calloc(MAX_LAYERS, sizeof(struct cairo_layer));
 
 	/* Clear layers */
@@ -310,6 +326,16 @@ ret_clear_layers:
 	free(layers);
 
 	printf("cairo export finished. It might still be buggy!\n");
+
+	/* If forked, suspend process */
+	if (process_id == 0)
+		exit(0);
+
+	/* fork didn't work. Just return here */
+	return;
+ret_parent:
+	waitpid(process_id, NULL, 0);
+	return;
 }
 
 /** @} */