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[tor-commits] [tor/maint-0.3.0] Fix GCC 7 -Wimplicit-fallthrough warnings
commit 6cd5a80275614105ccf8794465b6ba5c0c5e8f3f
Author: Andreas Stieger <astieger@xxxxxxxx>
Date: Sun May 28 23:49:31 2017 +0200
Fix GCC 7 -Wimplicit-fallthrough warnings
Add magic comments recognized by default -Wimplicit-fallthrough=3
or break, as required.
---
src/ext/csiphash.c | 14 +++++++-------
src/ext/ed25519/donna/modm-donna-64bit.h | 24 ++++++++++++------------
src/or/buffers.c | 1 +
src/or/connection_edge.c | 1 +
src/or/dns.c | 1 +
src/or/relay.c | 1 +
6 files changed, 23 insertions(+), 19 deletions(-)
diff --git a/src/ext/csiphash.c b/src/ext/csiphash.c
index b60f73a7f..49a6dc477 100644
--- a/src/ext/csiphash.c
+++ b/src/ext/csiphash.c
@@ -122,13 +122,13 @@ uint64_t siphash24(const void *src, unsigned long src_sz, const struct sipkey *k
}
switch (src_sz - blocks) {
- case 7: last7 |= (uint64_t)m[i + 6] << 48;
- case 6: last7 |= (uint64_t)m[i + 5] << 40;
- case 5: last7 |= (uint64_t)m[i + 4] << 32;
- case 4: last7 |= (uint64_t)m[i + 3] << 24;
- case 3: last7 |= (uint64_t)m[i + 2] << 16;
- case 2: last7 |= (uint64_t)m[i + 1] << 8;
- case 1: last7 |= (uint64_t)m[i + 0] ;
+ case 7: last7 |= (uint64_t)m[i + 6] << 48; /* Falls through. */
+ case 6: last7 |= (uint64_t)m[i + 5] << 40; /* Falls through. */
+ case 5: last7 |= (uint64_t)m[i + 4] << 32; /* Falls through. */
+ case 4: last7 |= (uint64_t)m[i + 3] << 24; /* Falls through. */
+ case 3: last7 |= (uint64_t)m[i + 2] << 16; /* Falls through. */
+ case 2: last7 |= (uint64_t)m[i + 1] << 8; /* Falls through. */
+ case 1: last7 |= (uint64_t)m[i + 0] ; /* Falls through. */
case 0:
default:;
}
diff --git a/src/ext/ed25519/donna/modm-donna-64bit.h b/src/ext/ed25519/donna/modm-donna-64bit.h
index 012ea9ea0..06c98e303 100644
--- a/src/ext/ed25519/donna/modm-donna-64bit.h
+++ b/src/ext/ed25519/donna/modm-donna-64bit.h
@@ -294,10 +294,10 @@ sub256_modm_batch(bignum256modm out, const bignum256modm a, const bignum256modm
size_t i = 0;
bignum256modm_element_t carry = 0;
switch (limbsize) {
- case 4: out[i] = (a[i] - b[i]) ; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++;
- case 3: out[i] = (a[i] - b[i]) - carry; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++;
- case 2: out[i] = (a[i] - b[i]) - carry; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++;
- case 1: out[i] = (a[i] - b[i]) - carry; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++;
+ case 4: out[i] = (a[i] - b[i]) ; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++; /* Falls through. */
+ case 3: out[i] = (a[i] - b[i]) - carry; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++; /* Falls through. */
+ case 2: out[i] = (a[i] - b[i]) - carry; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++; /* Falls through. */
+ case 1: out[i] = (a[i] - b[i]) - carry; carry = (out[i] >> 63); out[i] &= 0xffffffffffffff; i++; /* Falls through. */
case 0:
default: out[i] = (a[i] - b[i]) - carry;
}
@@ -310,10 +310,10 @@ lt256_modm_batch(const bignum256modm a, const bignum256modm b, size_t limbsize)
size_t i = 0;
bignum256modm_element_t t, carry = 0;
switch (limbsize) {
- case 4: t = (a[i] - b[i]) ; carry = (t >> 63); i++;
- case 3: t = (a[i] - b[i]) - carry; carry = (t >> 63); i++;
- case 2: t = (a[i] - b[i]) - carry; carry = (t >> 63); i++;
- case 1: t = (a[i] - b[i]) - carry; carry = (t >> 63); i++;
+ case 4: t = (a[i] - b[i]) ; carry = (t >> 63); i++; /* Falls through. */
+ case 3: t = (a[i] - b[i]) - carry; carry = (t >> 63); i++; /* Falls through. */
+ case 2: t = (a[i] - b[i]) - carry; carry = (t >> 63); i++; /* Falls through. */
+ case 1: t = (a[i] - b[i]) - carry; carry = (t >> 63); i++; /* Falls through. */
case 0: t = (a[i] - b[i]) - carry; carry = (t >> 63);
}
return (int)carry;
@@ -325,10 +325,10 @@ lte256_modm_batch(const bignum256modm a, const bignum256modm b, size_t limbsize)
size_t i = 0;
bignum256modm_element_t t, carry = 0;
switch (limbsize) {
- case 4: t = (b[i] - a[i]) ; carry = (t >> 63); i++;
- case 3: t = (b[i] - a[i]) - carry; carry = (t >> 63); i++;
- case 2: t = (b[i] - a[i]) - carry; carry = (t >> 63); i++;
- case 1: t = (b[i] - a[i]) - carry; carry = (t >> 63); i++;
+ case 4: t = (b[i] - a[i]) ; carry = (t >> 63); i++; /* Falls through. */
+ case 3: t = (b[i] - a[i]) - carry; carry = (t >> 63); i++; /* Falls through. */
+ case 2: t = (b[i] - a[i]) - carry; carry = (t >> 63); i++; /* Falls through. */
+ case 1: t = (b[i] - a[i]) - carry; carry = (t >> 63); i++; /* Falls through. */
case 0: t = (b[i] - a[i]) - carry; carry = (t >> 63);
}
return (int)!carry;
diff --git a/src/or/buffers.c b/src/or/buffers.c
index 8981fd283..89382d1d8 100644
--- a/src/or/buffers.c
+++ b/src/or/buffers.c
@@ -1595,6 +1595,7 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
return -1;
}
tor_assert(0);
+ break;
case 4: { /* socks4 */
enum {socks4, socks4a} socks4_prot = socks4a;
const char *authstart, *authend;
diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c
index 53ade173d..12fe2f57c 100644
--- a/src/or/connection_edge.c
+++ b/src/or/connection_edge.c
@@ -260,6 +260,7 @@ connection_edge_process_inbuf(edge_connection_t *conn, int package_partial)
}
/* Fall through if the connection is on a circuit without optimistic
* data support. */
+ /* Falls through. */
case EXIT_CONN_STATE_CONNECTING:
case AP_CONN_STATE_RENDDESC_WAIT:
case AP_CONN_STATE_CIRCUIT_WAIT:
diff --git a/src/or/dns.c b/src/or/dns.c
index e007a402f..0ad4c0f50 100644
--- a/src/or/dns.c
+++ b/src/or/dns.c
@@ -522,6 +522,7 @@ send_resolved_cell,(edge_connection_t *conn, uint8_t answer_type,
answer_type = RESOLVED_TYPE_ERROR;
/* fall through. */
}
+ /* Falls through. */
case RESOLVED_TYPE_ERROR_TRANSIENT:
case RESOLVED_TYPE_ERROR:
{
diff --git a/src/or/relay.c b/src/or/relay.c
index 4e9dadba1..882877ade 100644
--- a/src/or/relay.c
+++ b/src/or/relay.c
@@ -859,6 +859,7 @@ connection_ap_process_end_not_open(
break; /* break means it'll close, below */
/* Else fall through: expire this circuit, clear the
* chosen_exit_name field, and try again. */
+ /* Falls through. */
case END_STREAM_REASON_RESOLVEFAILED:
case END_STREAM_REASON_TIMEOUT:
case END_STREAM_REASON_MISC:
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