text: Guys, does the following code really belong to libavcodec/dsputil.c? Shouldn't it be moved to configure? Or at least duplicated there as well. int ff_check_alignment(void){ static int did_fail=0; DECLARE_ALIGNED_16(int, aligned); if((long)&aligned & 15){ if(!did_fail){ #if defined(HAVE_MMX) || defined(HAVE_ALTIVEC) av_log(NULL, AV_LOG_ERROR, "Compiler did not align stack variables. Libavcodec has been miscompiled\n" "and may be very slow or crash. This is not a bug in libavcodec,\n" "but in the compiler. Do not report crashes to FFmpeg developers.\n"); #endif did_fail=1; } return -1; } return 0; } void dsputil_init(DSPContext* c, AVCodecContext *avctx) { int i; ff_check_alignment(); ..... Thanks, Roman. P.S. And yes, gcc 3.4.5 on RedHat 4 64bit seems to trigger this message.