fix possible SEGV by negatiev num of points

10 files changed, 142 insertions, 0 deletions

diff --git a/tests/gdimagepolygon/CMakeLists.txt b/tests/gdimagepolygon/CMakeLists.txt
new file mode 100644
index 0000000..ae8d8dd
--- /dev/null
+++ b/tests/gdimagepolygon/CMakeLists.txt
@@ -0,0 +1,13 @@
+SET(TESTS_FILES
+	gdimagepolygon0
+	gdimagepolygon1
+	gdimagepolygon2
+	gdimagepolygon3
+)
+
+FOREACH(test_name ${TESTS_FILES})
+	add_executable(${test_name} "${test_name}.c")
+	target_link_libraries (${test_name} ${GDTESTS_TARGET_LINK})
+	get_target_property(test_path ${test_name} LOCATION)
+	ADD_TEST(${test_name} ${test_path})
+ENDFOREACH(test_name)
diff --git a/tests/gdimagepolygon/Makefile.am b/tests/gdimagepolygon/Makefile.am
new file mode 100644
index 0000000..0ae2c29
--- /dev/null
+++ b/tests/gdimagepolygon/Makefile.am
@@ -0,0 +1,11 @@
+## Process this file with automake to produce Makefile.in -*-Makefile-*-
+
+EXTRA_DIST = CMakeLists.txt \
+	gdimagepolygon0.c \
+	gdimagepolygon0.png \
+	gdimagepolygon1.c \
+	gdimagepolygon1.png \
+	gdimagepolygon2.c \
+	gdimagepolygon2.png \
+	gdimagepolygon3.c \
+	gdimagepolygon3.png
diff --git a/tests/gdimagepolygon/gdimagepolygon0.c b/tests/gdimagepolygon/gdimagepolygon0.c
new file mode 100644
index 0000000..20fa423
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon0.c
@@ -0,0 +1,22 @@
+#include <stdlib.h>
+#include "gd.h"
+#include "gdtest.h"
+
+int
+main(void)
+{
+	gdImagePtr im;
+	int white, black, r;
+
+	im = gdImageCreate(100, 100);
+	if (!im) exit(EXIT_FAILURE);
+	white = gdImageColorAllocate(im, 0xff, 0xff, 0xff);
+	black = gdImageColorAllocate(im, 0, 0, 0);
+	gdImageFilledRectangle(im, 0, 0, 99, 99, white);
+	gdImagePolygon(im, NULL, 0, black);  /* no effect */
+	gdImagePolygon(im, NULL, -1, black); /* no effect */
+	r = gdAssertImageEqualsToFile(GDTEST_TOP_DIR "/gdimagepolygon/gdimagepolygon0.png", im);
+	gdImageDestroy(im);
+	if (!r) exit(EXIT_FAILURE);
+	return EXIT_SUCCESS;
+}
diff --git a/tests/gdimagepolygon/gdimagepolygon0.png b/tests/gdimagepolygon/gdimagepolygon0.png
new file mode 100644
index 0000000..14c7090
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon0.png
diff --git a/tests/gdimagepolygon/gdimagepolygon1.c b/tests/gdimagepolygon/gdimagepolygon1.c
new file mode 100644
index 0000000..b0949d4
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon1.c
@@ -0,0 +1,30 @@
+#include <stdlib.h>
+#include "gd.h"
+#include "gdtest.h"
+
+int
+main(void)
+{
+	gdImagePtr im;
+	int white, black, r;
+	gdPointPtr points;
+
+	im = gdImageCreate(100, 100);
+	if (!im) exit(EXIT_FAILURE);
+	white = gdImageColorAllocate(im, 0xff, 0xff, 0xff);
+	black = gdImageColorAllocate(im, 0, 0, 0);
+	gdImageFilledRectangle(im, 0, 0, 99, 99, white);
+	points = (gdPointPtr)gdCalloc(3, sizeof(gdPoint));
+	if (!points) {
+		gdImageDestroy(im);
+		exit(EXIT_FAILURE);
+	}
+	points[0].x = 10;
+	points[0].y = 10;
+	gdImagePolygon(im, points, 1, black);
+	r = gdAssertImageEqualsToFile(GDTEST_TOP_DIR "/gdimagepolygon/gdimagepolygon1.png", im);
+	gdFree(points);
+	gdImageDestroy(im);
+	if (!r) exit(EXIT_FAILURE);
+	return EXIT_SUCCESS;
+}
diff --git a/tests/gdimagepolygon/gdimagepolygon1.png b/tests/gdimagepolygon/gdimagepolygon1.png
new file mode 100644
index 0000000..845c5f6
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon1.png
diff --git a/tests/gdimagepolygon/gdimagepolygon2.c b/tests/gdimagepolygon/gdimagepolygon2.c
new file mode 100644
index 0000000..79e9420
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon2.c
@@ -0,0 +1,32 @@
+#include <stdlib.h>
+#include "gd.h"
+#include "gdtest.h"
+
+int
+main(void)
+{
+	gdImagePtr im;
+	int white, black, r;
+	gdPointPtr points;
+
+	im = gdImageCreate(100, 100);
+	if (!im) exit(EXIT_FAILURE);
+	white = gdImageColorAllocate(im, 0xff, 0xff, 0xff);
+	black = gdImageColorAllocate(im, 0, 0, 0);
+	gdImageFilledRectangle(im, 0, 0, 99, 99, white);
+	points = (gdPointPtr)gdCalloc(3, sizeof(gdPoint));
+	if (!points) {
+		gdImageDestroy(im);
+		exit(EXIT_FAILURE);
+	}
+	points[0].x = 10;
+	points[0].y = 10;
+	points[1].x = 50;
+	points[1].y = 70;
+	gdImagePolygon(im, points, 2, black);
+	r = gdAssertImageEqualsToFile(GDTEST_TOP_DIR "/gdimagepolygon/gdimagepolygon2.png", im);
+	gdFree(points);
+	gdImageDestroy(im);
+	if (!r) exit(EXIT_FAILURE);
+	return EXIT_SUCCESS;
+}
diff --git a/tests/gdimagepolygon/gdimagepolygon2.png b/tests/gdimagepolygon/gdimagepolygon2.png
new file mode 100644
index 0000000..80f91a2
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon2.png
diff --git a/tests/gdimagepolygon/gdimagepolygon3.c b/tests/gdimagepolygon/gdimagepolygon3.c
new file mode 100644
index 0000000..7701c51
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon3.c
@@ -0,0 +1,34 @@
+#include <stdlib.h>
+#include "gd.h"
+#include "gdtest.h"
+
+int
+main(void)
+{
+	gdImagePtr im;
+	int white, black, r;
+	gdPointPtr points;
+
+	im = gdImageCreate(100, 100);
+	if (!im) exit(EXIT_FAILURE);
+	white = gdImageColorAllocate(im, 0xff, 0xff, 0xff);
+	black = gdImageColorAllocate(im, 0, 0, 0);
+	gdImageFilledRectangle(im, 0, 0, 99, 99, white);
+	points = (gdPointPtr)gdCalloc(3, sizeof(gdPoint));
+	if (!points) {
+		gdImageDestroy(im);
+		exit(EXIT_FAILURE);
+	}
+	points[0].x = 10;
+	points[0].y = 10;
+	points[1].x = 50;
+	points[1].y = 70;
+	points[2].x = 90;
+	points[2].y = 30;
+	gdImagePolygon(im, points, 3, black);
+	r = gdAssertImageEqualsToFile(GDTEST_TOP_DIR "/gdimagepolygon/gdimagepolygon3.png", im);
+	gdFree(points);
+	gdImageDestroy(im);
+	if (!r) exit(EXIT_FAILURE);
+	return EXIT_SUCCESS;
+}
diff --git a/tests/gdimagepolygon/gdimagepolygon3.png b/tests/gdimagepolygon/gdimagepolygon3.png
new file mode 100644
index 0000000..aaff882
--- /dev/null
+++ b/tests/gdimagepolygon/gdimagepolygon3.png