gcry_pk_genkey(..., [elg])
==1860== Conditional jump or move depends on uninitialised value(s)
==1860==    at 0x4AF69C4: jent_stuck (jitterentropy-base.c:314)
==1860==    by 0x4AF6FD7: jent_entropy_init (jitterentropy-base.c:694)
==1860==    by 0x4AF7218: _gcry_rndjent_poll (rndjent.c:278)
==1860==    by 0x4AF7D52: _gcry_rndlinux_gather_random (rndlinux.c:203)
==1860==    by 0x4AF21AF: read_random_source (random-csprng.c:1279)
==1860==    by 0x4AF2FC5: read_pool (random-csprng.c:976)
==1860==    by 0x4AF2FC5: _gcry_rngcsprng_randomize (random-csprng.c:538)
==1860==    by 0x4AF1E3F: _gcry_random_bytes_secure (random.c:405)
==1860==    by 0x4AC4866: generate (elgamal.c:345)
==1860==    by 0x4AC4866: elg_generate (elgamal.c:718)
==1860==    by 0x4A4AAEC: _gcry_pk_genkey (pubkey.c:578)
==1860==    by 0x4A36B9F: gcry_pk_genkey (visibility.c:1029)
==1860==    by 0x40749A: main (t-rfc4880.cc:175)
==1860== 
==1860== Conditional jump or move depends on uninitialised value(s)
==1860==    at 0x4AF69CB: jent_stuck (jitterentropy-base.c:314)
==1860==    by 0x4AF6FD7: jent_entropy_init (jitterentropy-base.c:694)
==1860==    by 0x4AF7218: _gcry_rndjent_poll (rndjent.c:278)
==1860==    by 0x4AF7D52: _gcry_rndlinux_gather_random (rndlinux.c:203)
==1860==    by 0x4AF21AF: read_random_source (random-csprng.c:1279)
==1860==    by 0x4AF2FC5: read_pool (random-csprng.c:976)
==1860==    by 0x4AF2FC5: _gcry_rngcsprng_randomize (random-csprng.c:538)
==1860==    by 0x4AF1E3F: _gcry_random_bytes_secure (random.c:405)
==1860==    by 0x4AC4866: generate (elgamal.c:345)
==1860==    by 0x4AC4866: elg_generate (elgamal.c:718)
==1860==    by 0x4A4AAEC: _gcry_pk_genkey (pubkey.c:578)
==1860==    by 0x4A36B9F: gcry_pk_genkey (visibility.c:1029)
==1860==    by 0x40749A: main (t-rfc4880.cc:175)
==1860== 
[...]

	int64_t delta2 = ec->last_delta - current_delta;
	int64_t delta3 = delta2 - ec->last_delta2;

	ec->last_delta = current_delta;
	ec->last_delta2 = delta2;

        if (!current_delta || !delta2 || !delta3)
		return 1;