Enable address sanitizer

codecs/avif/Makefile

@@ -22,6 +22,10 @@ all: $(OUT_JS)
 		${LDFLAGS} \
 		--bind \
 		--closure 1 \
+		-g2 \
+		-fsanitize=address \
+		-s ASAN_SHADOW_SIZE=1074790400 \
+		-s ASSERTIONS=1 \
 		-s ALLOW_MEMORY_GROWTH=1 \
 		-s MODULARIZE=1 \
 		-s 'EXPORT_NAME="$(basename $(@F))"' \

codecs/avif/dec/avif_dec.cpp

@@ -1,3 +1,5 @@
+#include <sanitizer/lsan_interface.h>
+
 #include <emscripten/bind.h>
 #include <emscripten/val.h>
 #include "avif/avif.h"
@@ -47,4 +49,5 @@ val decode(std::string avifimage) {
 
 EMSCRIPTEN_BINDINGS(my_module) {
   function("decode", &decode);
+  function("doLeakCheck", &__lsan_do_recoverable_leak_check);
 }

codecs/avif/dec/avif_dec.d.ts

@@ -1,5 +1,6 @@
 interface AVIFModule extends EmscriptenWasm.Module {
   decode(data: BufferSource): ImageData | null;
+  doLeakCheck(): void;
 }
 
 export default function(opts: EmscriptenWasm.ModuleOpts): AVIFModule;

codecs/avif/enc/avif_enc.cpp

@@ -1,3 +1,5 @@
+#include <sanitizer/lsan_interface.h>
+
 #include <emscripten/bind.h>
 #include <emscripten/val.h>
 #include "avif/avif.h"
@@ -81,4 +83,5 @@ EMSCRIPTEN_BINDINGS(my_module) {
       .field("subsample", &AvifOptions::subsample);
 
   function("encode", &encode);
+  function("doLeakCheck", &__lsan_do_recoverable_leak_check);
 }

codecs/avif/enc/avif_enc.d.ts

@@ -2,6 +2,7 @@ import { EncodeOptions } from '../../../src/codecs/avif/encoder-meta';
 
 interface AVIFModule extends EmscriptenWasm.Module {
   encode(data: BufferSource, width: number, height: number, options: EncodeOptions): Uint8Array | null;
+  doLeakCheck(): void;
 }
 
 export default function(opts: EmscriptenWasm.ModuleOpts): AVIFModule;

src/codecs/avif/decoder.ts

@@ -12,5 +12,6 @@ export async function decode(data: ArrayBuffer): Promise<ImageData> {
   if (!result) {
     throw new Error('Decoding error');
   }
+  module.doLeakCheck();
   return result;
 }

src/codecs/avif/encoder.ts

@@ -14,6 +14,7 @@ export async function encode(data: ImageData, options: EncodeOptions): Promise<A
   if (!result) {
     throw new Error('Encoding error');
   }
+  module.doLeakCheck();
 
   // wasm can’t run on SharedArrayBuffers, so we hard-cast to ArrayBuffer.
   return result.buffer as ArrayBuffer;