src/core/ngx_sha1.c:251: error: Uninitialized Value
  The value read from words[_] was never initialized.

src/core/ngx_sha1.c:251:9: 
249.         STEP(F3, a, b, c, d, e, words[54], 0x8f1bbcdc);
250.         STEP(F3, a, b, c, d, e, words[55], 0x8f1bbcdc);
251.         STEP(F3, a, b, c, d, e, words[56], 0x8f1bbcdc);
             ^
252.         STEP(F3, a, b, c, d, e, words[57], 0x8f1bbcdc);
253.         STEP(F3, a, b, c, d, e, words[58], 0x8f1bbcdc);
