Raman Tenneti f2a7f83595 Introduce getenv to LLVM libc ...

Add support for getenv as defined by the Open Group's "System Interface &
 Header" in https://pubs.opengroup.org/onlinepubs/7908799/xsh/getenv.html

getenv requires a standard way of accessing the environment,
so a pointer to the environment is added to the startup in crt1.
Consquently, this function is not usable on top of other libcs.

Added starts_with method to StringView. getenv function uses it.

Co-authored-by: Jeff Bailey <jeffbailey@google.com>

Reviewed By: sivachandra, rtenneti

Differential Revision: https://reviews.llvm.org/D119403

2022-02-14 10:10:13 -08:00

1.7 KiB

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