[DPDK/core Bug 1742] trace: duplicate shadow of same variable

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1742

            Bug ID: 1742
           Summary: trace: duplicate shadow of same variable
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: minor
          Priority: Normal
         Component: core
          Assignee: dev at dpdk.org
          Reporter: stephen at networkplumber.org
  Target Milestone: ---

The variable name 'trace' is used in different places and will get flagged as
warning with -Wshadow. Confusing and error prone

[48/3418] Compiling C object lib/librte_eal.a.p/eal_common_eal_common_trace.c.o
../lib/eal/common/eal_common_trace.c: In function ‘trace_lcore_mem_dump’:
../lib/eal/common/eal_common_trace.c:273:23: warning: declaration of ‘trace’
shadows a global declaration [-Wshadow]
  273 |         struct trace *trace = trace_obj_get();
      |                       ^~~~~
../lib/eal/common/eal_common_trace.c:27:21: note: shadowed declaration is here
   27 | static struct trace trace = { .args =
STAILQ_HEAD_INITIALIZER(trace.args), };
      |                     ^~~~~
../lib/eal/common/eal_common_trace.c: In function ‘rte_trace_dump’:
../lib/eal/common/eal_common_trace.c:298:34: warning: declaration of ‘tp_list’
shadows a global declaration [-Wshadow]
  298 |         struct trace_point_head *tp_list = trace_list_head_get();
      |                                  ^~~~~~~
../lib/eal/common/eal_common_trace.c:26:32: note: shadowed declaration is here
   26 | static struct trace_point_head tp_list =
STAILQ_HEAD_INITIALIZER(tp_list);
      |                                ^~~~~~~
../lib/eal/common/eal_common_trace.c:299:23: warning: declaration of ‘trace’
shadows a global declaration [-Wshadow]
  299 |         struct trace *trace = trace_obj_get();
      |                       ^~~~~
../lib/eal/common/eal_common_trace.c:27:21: note: shadowed declaration is here
   27 | static struct trace trace = { .args =
STAILQ_HEAD_INITIALIZER(trace.args), };
      |                     ^~~~~
../lib/eal/common/eal_common_trace.c: In function
‘__rte_trace_mem_per_thread_alloc’:
../lib/eal/common/eal_common_trace.c:334:23: warning: declaration of ‘trace’
shadows a global declaration [-Wshadow]
  334 |         struct trace *trace = trace_obj_get();
      |                       ^~~~~
../lib/eal/common/eal_common_trace.c:27:21: note: shadowed declaration is here
   27 | static struct trace trace = { .args =
STAILQ_HEAD_INITIALIZER(trace.args), };
      |                     ^~~~~
../lib/eal/common/eal_common_trace.c: In function ‘trace_mem_per_thread_free’:
../lib/eal/common/eal_common_trace.c:411:23: warning: declaration of ‘trace’
shadows a global declaration [-Wshadow]
  411 |         struct trace *trace = trace_obj_get();
      |                       ^~~~~
../lib/eal/common/eal_common_trace.c:27:21: note: shadowed declaration is here
   27 | static struct trace trace = { .args =
STAILQ_HEAD_INITIALIZER(trace.args), };
      |                     ^~~~~
../lib/eal/common/eal_common_trace.c: In function ‘trace_mem_free’:
../lib/eal/common/eal_common_trace.c:441:23: warning: declaration of ‘trace’
shadows a global declaration [-Wshadow]
  441 |         struct trace *trace = trace_obj_get();
      |                       ^~~~~
../lib/eal/common/eal_common_trace.c:27:21: note: shadowed declaration is here
   27 | static struct trace trace = { .args =
STAILQ_HEAD_INITIALIZER(trace.args), };
      |                     ^~~~~

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