libavfilter/vf_gradfun.c:139: error: Uninitialized Value
  The value read from cpu_flags was never initialized.

libavfilter/vf_gradfun.c:139:21: 
137.     if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
138.         gf->filter_line = ff_gradfun_filter_line_ssse3;
139.     if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)
                         ^
140.         gf->blur_line = ff_gradfun_blur_line_sse2;
141. 

static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
{
    GradFunContext *gf = ctx->priv;
    float thresh = 1.2;
    int radius = 16;
    av_unused int cpu_flags = av_get_cpu_flags();
    if (args)
        sscanf(args, "%f:%d", &thresh, &radius);
    thresh = av_clipf(thresh, 0.51, 255);
    gf->thresh = (1 << 15) / thresh;
    gf->radius = av_clip((radius + 1) & ~1, 4, 32);
    gf->blur_line = ff_gradfun_blur_line_c;
    gf->filter_line = ff_gradfun_filter_line_c;
    if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX2)
        gf->filter_line = ff_gradfun_filter_line_mmx2;
    if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)
        gf->filter_line = ff_gradfun_filter_line_ssse3;
    if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)
        gf->blur_line = ff_gradfun_blur_line_sse2;
    av_log(ctx, AV_LOG_INFO, "threshold:%.2f radius:%d\n", thresh, gf->radius);
    return 0;
}
['static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)\n{\n    GradFunContext *gf = ctx->priv;\n    float thresh = 1.2;\n    int radius = 16;\n    av_unused int cpu_flags = av_get_cpu_flags();\n    if (args)\n        sscanf(args, "%f:%d", &thresh, &radius);\n    thresh = av_clipf(thresh, 0.51, 255);\n    gf->thresh = (1 << 15) / thresh;\n    gf->radius = av_clip((radius + 1) & ~1, 4, 32);\n    gf->blur_line = ff_gradfun_blur_line_c;\n    gf->filter_line = ff_gradfun_filter_line_c;\n    if (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX2)\n        gf->filter_line = ff_gradfun_filter_line_mmx2;\n    if (HAVE_SSSE3 && cpu_flags & AV_CPU_FLAG_SSSE3)\n        gf->filter_line = ff_gradfun_filter_line_ssse3;\n    if (HAVE_SSE && cpu_flags & AV_CPU_FLAG_SSE2)\n        gf->blur_line = ff_gradfun_blur_line_sse2;\n    av_log(ctx, AV_LOG_INFO, "threshold:%.2f radius:%d\\n", thresh, gf->radius);\n    return 0;\n}']