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Type:
Bug
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Resolution: Fixed
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Priority:
Minor - P4
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Affects Version/s: None
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Component/s: Internal Code
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Labels:None
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Fully Compatible
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ALL
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Service arch 2020-05-04
tcmalloc is sloppy with function aliases, and it emits warnings during a normal build of mongod with the flags we give it from scons. We can specify "-Wno-attribute-alias" to shut the warnings up.
[353/3950] Compiling build/dynamic_gcc_ninja/third_party/gperftools-2.7/dist/src/tcmalloc.dyn.o
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:2128:36: warning: ‘void tc_delete_aligned_nothrow(void*, std::align_val_t, const std::nothrow_t&)’ alias between functions of incompatible types ‘void(void*, std::align_val_t, const std::nothrow_t&)’ and ‘void(void*)’ [-Wattribute-alias]
extern "C" PERFTOOLS_DLL_DECL void tc_delete_aligned_nothrow(void* p, std::align_val_t, const std::nothrow_t&) PERFTOOLS_NOTHROW
^~~~~~~~~~~~~~~~~~~~~~~~~
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:2014:36: note: aliased declaration here
extern "C" PERFTOOLS_DLL_DECL void tc_delete(void* p) PERFTOOLS_NOTHROW
^~~~~~~~~
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:2119:36: warning: ‘void tc_delete_sized_aligned(void*, size_t, std::align_val_t)’ alias between functions of incompatible types ‘void(void*, size_t, std::align_val_t)’ {aka ‘void(void*, long unsigned int, std::align_val_t)’} and ‘void(void*)’ [-Wattribute-alias]
extern "C" PERFTOOLS_DLL_DECL void tc_delete_sized_aligned(void* p, size_t size, std::align_val_t align) PERFTOOLS_NOTHROW
^~~~~~~~~~~~~~~~~~~~~~~
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:2014:36: note: aliased declaration here
extern "C" PERFTOOLS_DLL_DECL void tc_delete(void* p) PERFTOOLS_NOTHROW
^~~~~~~~~
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:2108:36: warning: ‘void tc_delete_aligned(void*, std::align_val_t)’ alias between functions of incompatible types ‘void(void*, std::align_val_t)’ and ‘void(void*)’ [-Wattribute-alias]
extern "C" PERFTOOLS_DLL_DECL void tc_delete_aligned(void* p, std::align_val_t) PERFTOOLS_NOTHROW
^~~~~~~~~~~~~~~~~
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:2014:36: note: aliased declaration here
extern "C" PERFTOOLS_DLL_DECL void tc_delete(void* p) PERFTOOLS_NOTHROW
^~~~~~~~~
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:2026:36: warning: ‘void tc_delete_nothrow(void*, const std::nothrow_t&)’ alias between functions of incompatible types ‘void(void*, const std::nothrow_t&)’ and ‘void(void*)’ [-Wattribute-alias]
extern "C" PERFTOOLS_DLL_DECL void tc_delete_nothrow(void* p, const std::nothrow_t&) PERFTOOLS_NOTHROW
^~~~~~~~~~~~~~~~~
src/third_party/gperftools-2.7/dist/src/tcmalloc.cc:1923:6: note: aliased declaration here
void tc_free(void* ptr) PERFTOOLS_NOTHROW {
^~~~~~~