Add harness

mayhem/fuzz.cpp

@@ -0,0 +1,21 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <climits>
+
+#include <fuzzer/FuzzedDataProvider.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    FuzzedDataProvider provider(data, size);
+    int src_width = provider.ConsumeIntegralInRange<int>(0, INT_MAX);
+    int src_height = provider.ConsumeIntegralInRange<int>(0, INT_MAX);
+    int dest_width_inout = provider.ConsumeIntegral<int>();
+    int dest_height_inout = provider.ConsumeIntegral<int>();
+    int font_ratio = provider.ConsumeFloatingPointInRange<float>(1, 100);
+    int zoom = provider.ConsumeIntegral<int>();
+    int stretch = provider.ConsumeIntegral<int>();
+
+    // chafa_calc_canvas_geometry(src_width, src_height, &dest_width_inout, &dest_height_inout, font_ratio, zoom, stretch);
+
+    return 0;
+}