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getenv used in blosc_compress_ctx #384

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nhz2 opened this issue Aug 22, 2024 · 0 comments · Fixed by #387
Closed

getenv used in blosc_compress_ctx #384

nhz2 opened this issue Aug 22, 2024 · 0 comments · Fixed by #387

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@nhz2
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nhz2 commented Aug 22, 2024

From what I can tell getenv is used in blosc_compress_ctx here:

c-blosc/blosc/blosc.c

Line 1089 in 3455c38

envvar = getenv("BLOSC_WARN");

blosc_compress_ctx is supposed to be used in multi-threaded contexts; however, getenv is not threadsafe:
https://pubs.opengroup.org/onlinepubs/9699919799.2016edition/functions/getenv.html
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Move getenv out of a function used in multiple threads nhz2/c-blosc
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@nhz2