Compile with -Wpedantic

Makefile

@@ -4,7 +4,7 @@ SDL_LIBS = `sdl2-config --libs` -lSDL2_mixer -lGL
 
 DEFINES = -DBYPASS_PROTECTION
 
-CXXFLAGS := -g -O -MMD -Wall $(SDL_CFLAGS) $(DEFINES)
+CXXFLAGS := -g -O -MMD -Wall -Wpedantic $(SDL_CFLAGS) $(DEFINES)
 
 SRCS = aifcplayer.cpp bitmap.cpp file.cpp engine.cpp graphics_gl.cpp graphics_soft.cpp \
 	script.cpp mixer.cpp pak.cpp resource.cpp resource_mac.cpp resource_nth.cpp \

mixer.cpp

@@ -172,8 +172,8 @@ struct Mixer_impl {
 
 	static void mixSfxPlayer(void *data, uint8_t *s16buf, int len) {
 		len /= 2;
-		int8_t s8buf[len];
-		memset(s8buf, 0, sizeof(s8buf));
+		int8_t *s8buf = (int8_t *)alloca(len);
+		memset(s8buf, 0, len);
 		((SfxPlayer *)data)->readSamples(s8buf, len / 2);
 		for (int i = 0; i < len; ++i) {
 			*(int16_t *)&s16buf[i * 2] = 256 * (int16_t)s8buf[i];

sfxplayer.cpp

@@ -143,7 +143,7 @@ void SfxPlayer::readSamples(int8_t *buf, int len) {
 	if (_delay == 0) {
 		memset(buf, 0, len * 2);
 	} else {
-		int8_t bufin[len * 2];
+		int8_t *bufin = (int8_t *)alloca(len * 2);
 		mixSamples(bufin, len);
 		nr(bufin, len, buf);
 	}