[dpdk-dev] [PATCH 10/10] app/test-crypto-perf: fix compilation with -Og

[Olivier Matz]

The compilation with gcc-6.3.0 and EXTRA_CFLAGS=-Og gives the following
error:

  CC cperf_test_verify.o
cperf_test_verify.c: In function ‘cperf_verify_op’:
cperf_test_verify.c:382:5: error: ‘auth’ may be used uninitialized
                           in this function
                           [-Werror=maybe-uninitialized]
  if (auth == 1) {
     ^
cperf_test_verify.c:371:5: error: ‘cipher’ may be used uninitialized
                           in this function
                           [-Werror=maybe-uninitialized]
  if (cipher == 1) {
     ^
cperf_test_verify.c:384:11: error: ‘auth_offset’ may be used
                            uninitialized in this function
                            [-Werror=maybe-uninitialized]
    res += memcmp(data + auth_offset,
           ^~~~~~~~~~~~~~~~~~~~~~~~~~
      vector->digest.data,
      ~~~~~~~~~~~~~~~~~~~~
      options->digest_sz);
      ~~~~~~~~~~~~~~~~~~~
cperf_test_verify.c:377:11: error: ‘cipher_offset’ may be used
                            uninitialized in this function
                            [-Werror=maybe-uninitialized]
    res += memcmp(data + cipher_offset,
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      vector->plaintext.data,
      ~~~~~~~~~~~~~~~~~~~~~~~
      options->test_buffer_size);
      ~~~~~~~~~~~~~~~~~~~~~~~~~~

There is no default case in the switch statement, so if options->op_type
is an unknown value, the function will use uninitialized values. Fix it
by adding a default.

Fixes: f8be1786b1b8 ("app/crypto-perf: introduce performance test application")

Signed-off-by: Olivier Matz <olivier.m...@6wind.com>
---
 app/test-crypto-perf/cperf_test_verify.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/test-crypto-perf/cperf_test_verify.c 
b/app/test-crypto-perf/cperf_test_verify.c
index 5221f2251..36be7b864 100644
--- a/app/test-crypto-perf/cperf_test_verify.c
+++ b/app/test-crypto-perf/cperf_test_verify.c
@@ -366,6 +366,9 @@ cperf_verify_op(struct rte_crypto_op *op,
                auth = 1;
                auth_offset = vector->aad.length + options->test_buffer_size;
                break;
+       default:
+               res = 1;
+               goto out;
        }
 
        if (cipher == 1) {
@@ -386,6 +389,7 @@ cperf_verify_op(struct rte_crypto_op *op,
                                        options->digest_sz);
        }
 
+out:
        rte_free(data);
        return !!res;
 }
-- 
2.11.0