diff --git a/include/grpc/support/port_platform.h b/include/grpc/support/port_platform.h
index 434dd6de874e1988dabb7c8d576e4ec0e19c49ad..f98038da520ea7249fe002cf0d8e54f081ed196c 100644
--- a/include/grpc/support/port_platform.h
+++ b/include/grpc/support/port_platform.h
@@ -181,6 +181,7 @@
#ifndef _BSD_SOURCE
#define _BSD_SOURCE
#endif
+#define GPR_FORBID_UNREACHABLE_CODE
#define GPR_MSG_IOVLEN_TYPE int
#if TARGET_OS_IPHONE
#define GPR_PLATFORM_STRING "ios"
@@ -336,4 +337,15 @@ typedef uintptr_t gpr_uintptr;
#endif
#endif
+#ifdef GPR_FORBID_UNREACHABLE_CODE
+#define GPR_UNREACHABLE_CODE(STATEMENT)
+#else
+#define GPR_UNREACHABLE_CODE(STATEMENT) \
+ do { \
+ gpr_log(GPR_ERROR, "Should never reach here."); \
+ abort(); \
+ STATEMENT; \
+ } while (0)
+#endif /* GPR_FORBID_UNREACHABLE_CODE */
+
#endif /* GRPC_SUPPORT_PORT_PLATFORM_H */
diff --git a/src/core/channel/client_channel.c b/src/core/channel/client_channel.c
index 8e7cb27cfd2bb3e7d6f23a6f9ea91bcadc512dc2..08aa721a4de44714b5d9d27e0928713d74a1d823 100644
--- a/src/core/channel/client_channel.c
+++ b/src/core/channel/client_channel.c
@@ -645,9 +645,7 @@ static void destroy_call_elem(grpc_exec_ctx *exec_ctx,
case CALL_WAITING_FOR_CONFIG:
case CALL_WAITING_FOR_CALL:
case CALL_WAITING_FOR_SEND:
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- break;
+ GPR_UNREACHABLE_CODE(return );
}
}
diff --git a/src/core/client_config/uri_parser.c b/src/core/client_config/uri_parser.c
index df9f32d403cb6bf89bd8debdd5ae24aa7c7e476f..cbdfffcf8e88ebf5c32944ef5d80b3ddacd2e0d4 100644
--- a/src/core/client_config/uri_parser.c
+++ b/src/core/client_config/uri_parser.c
@@ -37,6 +37,7 @@
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
#include <grpc/support/string_util.h>
/** a size_t default value... maps to all 1's */
@@ -120,8 +121,7 @@ static int parse_fragment_or_query(const char *uri_text, size_t *i) {
} else {
return 1;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
+ GPR_UNREACHABLE_CODE(return 0);
default:
(*i) += advance;
break;
diff --git a/src/core/httpcli/parser.c b/src/core/httpcli/parser.c
index 404906d5ae216054c176dec2f8e318399d88cee6..046770c094421f6e2a122115725a50ba0cfc9aeb 100644
--- a/src/core/httpcli/parser.c
+++ b/src/core/httpcli/parser.c
@@ -139,8 +139,7 @@ static int finish_line(grpc_httpcli_parser *parser) {
}
break;
case GRPC_HTTPCLI_BODY:
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
+ GPR_UNREACHABLE_CODE(return 0);
}
parser->cur_line_length = 0;
@@ -165,8 +164,7 @@ static int addbyte(grpc_httpcli_parser *parser, gpr_uint8 byte) {
} else {
return 1;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
+ GPR_UNREACHABLE_CODE(return 0);
case GRPC_HTTPCLI_BODY:
if (parser->r.body_length == parser->body_capacity) {
parser->body_capacity = GPR_MAX(8, parser->body_capacity * 3 / 2);
@@ -177,10 +175,7 @@ static int addbyte(grpc_httpcli_parser *parser, gpr_uint8 byte) {
parser->r.body_length++;
return 1;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
-
- return 0;
+ GPR_UNREACHABLE_CODE(return 0);
}
void grpc_httpcli_parser_init(grpc_httpcli_parser *parser) {
diff --git a/src/core/iomgr/tcp_client_posix.c b/src/core/iomgr/tcp_client_posix.c
index aca2691c416e64f29d9ea81db9e223fc82ace368..fe20039264121585feaeb058bba68535597f7429 100644
--- a/src/core/iomgr/tcp_client_posix.c
+++ b/src/core/iomgr/tcp_client_posix.c
@@ -191,7 +191,7 @@ static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, int success) {
goto finish;
}
- abort();
+ GPR_UNREACHABLE_CODE(return );
finish:
if (fd != NULL) {
diff --git a/src/core/iomgr/tcp_server_posix.c b/src/core/iomgr/tcp_server_posix.c
index 13bd67576f55d9adf90d36c64c69efcaed7f3c41..99c76dcbe9aeddfd7d303e994fba5526e9057bea 100644
--- a/src/core/iomgr/tcp_server_posix.c
+++ b/src/core/iomgr/tcp_server_posix.c
@@ -352,7 +352,7 @@ static void on_read(grpc_exec_ctx *exec_ctx, void *arg, int success) {
gpr_free(addr_str);
}
- abort();
+ GPR_UNREACHABLE_CODE(return );
error:
gpr_mu_lock(&sp->server->mu);
diff --git a/src/core/surface/byte_buffer.c b/src/core/surface/byte_buffer.c
index 295ef5ab0ee4faa3bcab596f31ad845234f0453e..fb39c4531d9acca2d2cd2bd21ec4de2098fb2e5d 100644
--- a/src/core/surface/byte_buffer.c
+++ b/src/core/surface/byte_buffer.c
@@ -75,9 +75,7 @@ grpc_byte_buffer *grpc_byte_buffer_copy(grpc_byte_buffer *bb) {
return grpc_raw_byte_buffer_create(bb->data.raw.slice_buffer.slices,
bb->data.raw.slice_buffer.count);
}
- gpr_log(GPR_INFO, "should never get here");
- abort();
- return NULL;
+ GPR_UNREACHABLE_CODE(return NULL);
}
void grpc_byte_buffer_destroy(grpc_byte_buffer *bb) {
@@ -95,7 +93,5 @@ size_t grpc_byte_buffer_length(grpc_byte_buffer *bb) {
case GRPC_BB_RAW:
return bb->data.raw.slice_buffer.length;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- return 0;
+ GPR_UNREACHABLE_CODE(return 0);
}
diff --git a/src/core/surface/call.c b/src/core/surface/call.c
index 022ca191cd741b797dcbbd71ce05308437a94e40..386a4a6b29650eb92ee409ec549dfb129a92d2b3 100644
--- a/src/core/surface/call.c
+++ b/src/core/surface/call.c
@@ -434,8 +434,7 @@ static grpc_cq_completion *allocate_completion(grpc_call *call) {
gpr_mu_unlock(&call->completion_mu);
return &call->completions[i];
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
+ GPR_UNREACHABLE_CODE(return NULL);
return NULL;
}
diff --git a/src/core/surface/channel_connectivity.c b/src/core/surface/channel_connectivity.c
index f72fb0414261d3e63ca1dbc29dcec66c5666b317..ca3c02c536ab23e16c954848f51955b801bd745a 100644
--- a/src/core/surface/channel_connectivity.c
+++ b/src/core/surface/channel_connectivity.c
@@ -100,9 +100,7 @@ static void finished_completion(grpc_exec_ctx *exec_ctx, void *pw,
switch (w->phase) {
case WAITING:
case CALLED_BACK:
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- break;
+ GPR_UNREACHABLE_CODE(return );
case CALLING_BACK:
w->phase = CALLED_BACK;
break;
@@ -149,9 +147,7 @@ static void partly_done(grpc_exec_ctx *exec_ctx, state_watcher *w,
w->phase = CALLING_BACK_AND_FINISHED;
break;
case CALLING_BACK_AND_FINISHED:
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- break;
+ GPR_UNREACHABLE_CODE(return );
case CALLED_BACK:
delete = 1;
break;
diff --git a/src/core/surface/completion_queue.c b/src/core/surface/completion_queue.c
index e818ccba488b86c15360751306988fe2bf3820b7..9e552c2cdf85d6a81cc7bfa93b793e8bcb8580e0 100644
--- a/src/core/surface/completion_queue.c
+++ b/src/core/surface/completion_queue.c
@@ -254,8 +254,7 @@ static void del_plucker(grpc_completion_queue *cc, void *tag,
return;
}
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
+ GPR_UNREACHABLE_CODE(return );
}
grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag,
diff --git a/src/core/transport/chttp2/frame_data.c b/src/core/transport/chttp2/frame_data.c
index acfa7c002ebac93f934fbb7ce43dff63d9c7a43e..07179a4571e9b139ba17d93c623a0841d6fa6d8d 100644
--- a/src/core/transport/chttp2/frame_data.c
+++ b/src/core/transport/chttp2/frame_data.c
@@ -168,7 +168,5 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
}
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- return GRPC_CHTTP2_CONNECTION_ERROR;
+ GPR_UNREACHABLE_CODE(return GRPC_CHTTP2_CONNECTION_ERROR);
}
diff --git a/src/core/transport/chttp2/frame_goaway.c b/src/core/transport/chttp2/frame_goaway.c
index 2ff1eda89b60d7c219f08db1698f9ecb21a05d02..c5758bcb7147b84623250d25ea47810dd736581b 100644
--- a/src/core/transport/chttp2/frame_goaway.c
+++ b/src/core/transport/chttp2/frame_goaway.c
@@ -152,9 +152,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse(
}
return GRPC_CHTTP2_PARSE_OK;
}
- gpr_log(GPR_ERROR, "Should never end up here");
- abort();
- return GRPC_CHTTP2_CONNECTION_ERROR;
+ GPR_UNREACHABLE_CODE(return GRPC_CHTTP2_CONNECTION_ERROR);
}
void grpc_chttp2_goaway_append(gpr_uint32 last_stream_id, gpr_uint32 error_code,
diff --git a/src/core/transport/chttp2/hpack_parser.c b/src/core/transport/chttp2/hpack_parser.c
index 20ea51337517bd0fa65a18a8482981aee6bc11a9..20d8312d547bc72392b6c75667c520ad718e3fea 100644
--- a/src/core/transport/chttp2/hpack_parser.c
+++ b/src/core/transport/chttp2/hpack_parser.c
@@ -1166,9 +1166,7 @@ static int append_string(grpc_chttp2_hpack_parser *p, const gpr_uint8 *cur,
append_bytes(str, decoded, 3);
goto b64_byte0;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- return 1;
+ GPR_UNREACHABLE_CODE(return 1);
}
/* append a null terminator to a string */
@@ -1313,9 +1311,7 @@ static int parse_value_string(grpc_chttp2_hpack_parser *p, const gpr_uint8 *cur,
return 0;
}
/* Add code to prevent return without value error */
- gpr_log(GPR_ERROR, "Should never reach beyond switch in parse_value_string");
- abort();
- return 0;
+ GPR_UNREACHABLE_CODE(return 0);
}
static int parse_value_string_with_indexed_key(grpc_chttp2_hpack_parser *p,
diff --git a/src/core/transport/chttp2/parsing.c b/src/core/transport/chttp2/parsing.c
index f7a0a10581b879418c401b26682d74ca7334766a..a0977ccaf6cea48063ec2bf7c632e605c38c38dc 100644
--- a/src/core/transport/chttp2/parsing.c
+++ b/src/core/transport/chttp2/parsing.c
@@ -417,14 +417,10 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx,
transport_parsing->incoming_frame_size -= (gpr_uint32)(end - cur);
return 1;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
+ GPR_UNREACHABLE_CODE(return 0);
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
-
- return 0;
+ GPR_UNREACHABLE_CODE(return 0);
}
static int init_frame_parser(grpc_chttp2_transport_parsing *transport_parsing) {
@@ -580,9 +576,7 @@ static int init_data_frame_parser(
case GRPC_CHTTP2_CONNECTION_ERROR:
return 0;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- return 0;
+ GPR_UNREACHABLE_CODE(return 0);
}
static void free_timeout(void *p) { gpr_free(p); }
@@ -820,7 +814,5 @@ static int parse_frame_slice(grpc_exec_ctx *exec_ctx,
case GRPC_CHTTP2_CONNECTION_ERROR:
return 0;
}
- gpr_log(GPR_ERROR, "should never reach here");
- abort();
- return 0;
+ GPR_UNREACHABLE_CODE(return 0);
}
diff --git a/src/core/transport/chttp2/stream_encoder.c b/src/core/transport/chttp2/stream_encoder.c
index 83227e677db07cacf633799bba2fc312034ad435..6c7f7a9ea7f068c4e24ea8c0de96278d1fb23936 100644
--- a/src/core/transport/chttp2/stream_encoder.c
+++ b/src/core/transport/chttp2/stream_encoder.c
@@ -428,7 +428,7 @@ static grpc_mdelem *hpack_enc(grpc_chttp2_hpack_compressor *c,
emit_lithdr_noidx(c, dynidx(c, indices_key), elem, st);
return elem;
}
- abort();
+ GPR_UNREACHABLE_CODE(return NULL);
}
indices_key = c->indices_keys[HASH_FRAGMENT_3(key_hash)];
@@ -442,7 +442,7 @@ static grpc_mdelem *hpack_enc(grpc_chttp2_hpack_compressor *c,
emit_lithdr_noidx(c, dynidx(c, indices_key), elem, st);
return elem;
}
- abort();
+ GPR_UNREACHABLE_CODE(return NULL);
}
/* no elem, key in the table... fall back to literal emission */
@@ -454,7 +454,7 @@ static grpc_mdelem *hpack_enc(grpc_chttp2_hpack_compressor *c,
emit_lithdr_noidx_v(c, elem, st);
return elem;
}
- abort();
+ GPR_UNREACHABLE_CODE(return NULL);
}
#define STRLEN_LIT(x) (sizeof(x) - 1)
diff --git a/src/cpp/server/server.cc b/src/cpp/server/server.cc
index a44e1d202503415ca0eb711ab985e09f73697254..e09744b842bf797a76742a653e4c7a247cd7dcb2 100644
--- a/src/cpp/server/server.cc
+++ b/src/cpp/server/server.cc
@@ -153,8 +153,7 @@ class Server::SyncRequest GRPC_FINAL : public CompletionQueueTag {
GPR_ASSERT((*req)->in_flight_);
return true;
}
- gpr_log(GPR_ERROR, "Should never reach here");
- abort();
+ GPR_UNREACHABLE_CODE(return false);
}
void SetupRequest() { cq_ = grpc_completion_queue_create(nullptr); }