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loloicci / nimly

Lexer Generator and Parser Generator as a Library in Nim.
MIT License
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Bug In VM?: SIGSEGV: Illegal storage access. (Attempt to read from nil?) #24

Closed loloicci closed 4 years ago

loloicci commented 5 years ago

Sometimes SIGSEGV: Illegal storage access. (Attempt to read from nil?) is issued in compile-time. Maybe it is bug in VM (and not in nimly). https://dev.azure.com/oxisccl/nimly/_build/results?buildId=29

loloicci commented 5 years ago

See also: https://github.com/loloiccl/nimly/commit/1128e18dbcb268d4f78450fbbc67870c8bff014a (After this commit, test fails)

loloicci commented 5 years ago

maybe sets.incl has some bugs with VM.

nimly: 3ca678e22da3fc0607be3a4a875f77859e5f8524 Nim: fabc2a7086bb83afc2abfd6d5841f25c8387609f

Sometimes following error is issued when nimy is used.

test_nimly.nim(51, 5)
test_nimly.nim(51, 5)    :tmp
../src/nimly/lalr.nim(162, 18) makeTableLALR
../src/nimly/lalr.nim(110, 16) toLALRKernel
../../Nim/lib/pure/collections/sets.nim(143, 24) incl
test_nimly.nim(33, 6) template/generic instantiation of `nimy` from here
../../Nim/lib/pure/collections/sets.nim(143, 24) Error: attempt to access a nil address
loloicci commented 4 years ago

Maybe fixed in Nim v1.0.0.

loloicci commented 4 years ago

see also #30