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2 tests fail with GCC 9.3: “array subscript -1 is outside array bounds of ‘uint32_t[1]’” #89

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hikari-no-yume opened this issue Feb 26, 2021 · 1 comment
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2 tests fail with GCC 9.3: “array subscript -1 is outside array bounds of ‘uint32_t[1]’” #89

hikari-no-yume opened this issue Feb 26, 2021 · 1 comment

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@hikari-no-yume
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hikari-no-yume commented Feb 26, 2021 •
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  • test_consistent_return_value_c[test_char_sized_ptr_math_decr--O2]
  • test_consistent_return_value_c[test_char_sized_ptr_math_decr--O3]

I think the error message is self-explanatory, and it seems completely correct, the generated C is indeed using -1 as an array index, and that looks like the intent of the source file test/c_tests/pointers/test_char_sized_ptr_math_decr.c too.

I don't know what to reasonably do about this. Silence the warning with another GCC flag?

Not a big deal in any case.
@hikari-no-yume
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hikari-no-yume commented Feb 26, 2021 •
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Adding -Warray-bounds=0 to the flags passed to GCC is enough to make it shut up.

It would probably be best to localise this to just tests based on test_char_sized_ptr_math_decr.c.

@AmeyaVS AmeyaVS mentioned this issue Mar 4, 2021
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