[PowerPC] warning: 'unsigned int __atomic_fetch_add_4(volatile void*, unsigned int, int)' writing 4 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=]

[barracuda156]

Is this something of a concern (and perhaps could be fixed then)?

In file included from /opt/local/include/gcc13/c++/atomic:41,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/symengine-0.11.2/symengine/basic.h:34,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/symengine-0.11.2/symengine/polys/upolybase.h:8,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/symengine-0.11.2/symengine/polys/uintpoly_flint.h:8,
                 from /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/symengine-0.11.2/symengine/visitor.h:9:
In member function 'std::__atomic_base<_IntTp>::__int_type std::__atomic_base<_IntTp>::fetch_add(__int_type, std::memory_order) [with _ITp = unsigned int]',
    inlined from 'std::__atomic_base<_IntTp>::__int_type std::__atomic_base<_IntTp>::operator++(int) [with _ITp = unsigned int]' at /opt/local/include/gcc13/c++/bits/atomic_base.h:386:25,
    inlined from 'SymEngine::RCP<T>::RCP(T*) [with T = const SymEngine::Integer]' at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/symengine-0.11.2/symengine/symengine_rcp.h:113:26,
    inlined from 'SymEngine::RCP<T> SymEngine::rcp_static_cast(const RCP<T1>&) [with T2 = const Integer; T1 = const Basic]' at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/symengine-0.11.2/symengine/symengine_rcp.h:221:25,
    inlined from 'SymEngine::RCP<const SymEngine::Basic> SymEngine::PolyGamma::rewrite_as_zeta() const' at /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/symengine-0.11.2/symengine/functions.cpp:3380:69:
/opt/local/include/gcc13/c++/bits/atomic_base.h:635:34: warning: 'unsigned int __atomic_fetch_add_4(volatile void*, unsigned int, int)' writing 4 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=]
  635 |       { return __atomic_fetch_add(&_M_i, __i, int(__m)); }
      |                ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
In member function 'SymEngine::RCP<const SymEngine::Basic> SymEngine::PolyGamma::rewrite_as_zeta() const':
cc1plus: note: destination object is likely at address zero

[barracuda156]

Tests pass though:

--->  Testing symengine
Executing:  cd "/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/build" && /usr/bin/make test DYLD_LIBRARY_PATH=/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/build/symengine 
Running tests...
/opt/local/bin/ctest --force-new-ctest-process 
Test project /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_math_symengine/symengine/work/build
      Start  1: test_rcp
 1/65 Test  #1: test_rcp .........................   Passed    0.18 sec
      Start  2: test_basic
 2/65 Test  #2: test_basic .......................   Passed    0.12 sec
      Start  3: test_arit
 3/65 Test  #3: test_arit ........................   Passed    0.13 sec
      Start  4: test_poly
 4/65 Test  #4: test_poly ........................   Passed    0.09 sec
      Start  5: test_series
 5/65 Test  #5: test_series ......................   Passed    0.09 sec
      Start  6: test_series_generic
 6/65 Test  #6: test_series_generic ..............   Passed    0.36 sec
      Start  7: test_series_expansion_URatF
 7/65 Test  #7: test_series_expansion_URatF ......   Passed    0.12 sec
      Start  8: test_functions
 8/65 Test  #8: test_functions ...................   Passed    0.17 sec
      Start  9: test_subs
 9/65 Test  #9: test_subs ........................   Passed    0.11 sec
      Start 10: test_integer
10/65 Test #10: test_integer .....................   Passed    0.10 sec
      Start 11: test_rational
11/65 Test #11: test_rational ....................   Passed    0.10 sec
      Start 12: test_relationals
12/65 Test #12: test_relationals .................   Passed    0.10 sec
      Start 13: test_number
13/65 Test #13: test_number ......................   Passed    0.10 sec
      Start 14: test_as_numer_denom
14/65 Test #14: test_as_numer_denom ..............   Passed    0.10 sec
      Start 15: test_parser
15/65 Test #15: test_parser ......................   Passed    0.14 sec
      Start 16: test_serialize-cereal
16/65 Test #16: test_serialize-cereal ............   Passed    0.09 sec
      Start 17: test_sbml_parser
17/65 Test #17: test_sbml_parser .................   Passed    0.14 sec
      Start 18: test_sets
18/65 Test #18: test_sets ........................   Passed    0.12 sec
      Start 19: test_fields
19/65 Test #19: test_fields ......................   Passed    0.29 sec
      Start 20: test_infinity
20/65 Test #20: test_infinity ....................   Passed    0.11 sec
      Start 21: test_nan
21/65 Test #21: test_nan .........................   Passed    0.09 sec
      Start 22: test_solve
22/65 Test #22: test_solve .......................   Passed    0.16 sec
      Start 23: test_as_real_imag
23/65 Test #23: test_as_real_imag ................   Passed    0.13 sec
      Start 24: test_cse
24/65 Test #24: test_cse .........................   Passed    0.10 sec
      Start 25: test_count_ops
25/65 Test #25: test_count_ops ...................   Passed    0.09 sec
      Start 26: test_test_visitors
26/65 Test #26: test_test_visitors ...............   Passed    0.11 sec
      Start 27: test_assumptions
27/65 Test #27: test_assumptions .................   Passed    0.10 sec
      Start 28: test_refine
28/65 Test #28: test_refine ......................   Passed    0.09 sec
      Start 29: test_simplify
29/65 Test #29: test_simplify ....................   Passed    0.09 sec
      Start 30: test_tuple
30/65 Test #30: test_tuple .......................   Passed    0.09 sec
      Start 31: test_tribool
31/65 Test #31: test_tribool .....................   Passed    0.09 sec
      Start 32: test_ntheory
32/65 Test #32: test_ntheory .....................   Passed    0.33 sec
      Start 33: test_diophantine
33/65 Test #33: test_diophantine .................   Passed    0.09 sec
      Start 34: test_ntheory_funcs
34/65 Test #34: test_ntheory_funcs ...............   Passed    0.23 sec
      Start 35: test_matrix
35/65 Test #35: test_matrix ......................   Passed    0.13 sec
      Start 36: test_matrixexpr
36/65 Test #36: test_matrixexpr ..................   Passed    0.11 sec
      Start 37: test_printing
37/65 Test #37: test_printing ....................   Passed    0.10 sec
      Start 38: test_ccode
38/65 Test #38: test_ccode .......................   Passed    0.09 sec
      Start 39: test_uintpoly
39/65 Test #39: test_uintpoly ....................   Passed    0.10 sec
      Start 40: test_uratpoly
40/65 Test #40: test_uratpoly ....................   Passed    0.10 sec
      Start 41: test_mintpoly
41/65 Test #41: test_mintpoly ....................   Passed    0.09 sec
      Start 42: test_uexprpoly
42/65 Test #42: test_uexprpoly ...................   Passed    0.09 sec
      Start 43: test_mexprpoly
43/65 Test #43: test_mexprpoly ...................   Passed    0.09 sec
      Start 44: test_basic_conversions
44/65 Test #44: test_basic_conversions ...........   Passed    0.11 sec
      Start 45: test_uintpoly_flint
45/65 Test #45: test_uintpoly_flint ..............   Passed    0.09 sec
      Start 46: test_uratpoly_flint
46/65 Test #46: test_uratpoly_flint ..............   Passed    0.09 sec
      Start 47: test_cancel
47/65 Test #47: test_cancel ......................   Passed    0.09 sec
      Start 48: test_eval_mpfr
48/65 Test #48: test_eval_mpfr ...................   Passed    0.09 sec
      Start 49: test_eval_mpc
49/65 Test #49: test_eval_mpc ....................   Passed    0.09 sec
      Start 50: test_evalf
50/65 Test #50: test_evalf .......................   Passed    0.08 sec
      Start 51: test_eval_double
51/65 Test #51: test_eval_double .................   Passed    0.10 sec
      Start 52: test_lambda_double
52/65 Test #52: test_lambda_double ...............   Passed    0.10 sec
      Start 53: test_cwrapper
53/65 Test #53: test_cwrapper ....................   Passed    0.09 sec
      Start 54: test_expression
54/65 Test #54: test_expression ..................   Passed    0.08 sec
      Start 55: test_logic
55/65 Test #55: test_logic .......................   Passed    0.09 sec
      Start 56: test_finitediff
56/65 Test #56: test_finitediff ..................   Passed    0.08 sec
      Start 57: test_bipartite
57/65 Test #57: test_bipartite ...................   Passed    0.07 sec
      Start 58: test_hopcroft_karp
58/65 Test #58: test_hopcroft_karp ...............   Passed    0.08 sec
      Start 59: test_case001
59/65 Test #59: test_case001 .....................   Passed    0.08 sec
      Start 60: test_case002
60/65 Test #60: test_case002 .....................   Passed    0.08 sec
      Start 61: test_case003
61/65 Test #61: test_case003 .....................   Passed    0.08 sec
      Start 62: test_case004
62/65 Test #62: test_case004 .....................   Passed    0.08 sec
      Start 63: test_case005
63/65 Test #63: test_case005 .....................   Passed    0.08 sec
      Start 64: test_case006
64/65 Test #64: test_case006 .....................   Passed    0.08 sec
      Start 65: test_case007
65/65 Test #65: test_case007 .....................   Passed    0.08 sec

100% tests passed, 0 tests failed out of 65

Total Test time (real) =   7.41 sec