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authorRich Felker <dalias@aerifal.cx>2018-05-01 14:46:59 -0400
committerRich Felker <dalias@aerifal.cx>2018-05-01 14:46:59 -0400
commit375840c7d8e1f58a9bf40ced72fbe82635f49489 (patch)
treeed205abe92c31fcc9ee61d16fdc232a1f6e82589 /src/network/recvfrom.c
parente3c682ab5257aaa6739ef242a9676d897370e78e (diff)
downloadmusl-375840c7d8e1f58a9bf40ced72fbe82635f49489.tar.gz
avoid excessive stack usage in getcwd
to support the GNU extension of allocating a buffer for getcwd's result when a null pointer is passed without incurring a link dependency on free, we use a PATH_MAX-sized buffer on the stack and only duplicate it to allocated storage after the operation succeeds. unfortunately this imposed excessive stack usage on all callers, including those not making use of the GNU extension. instead, use a VLA to make stack allocation conditional.
Diffstat (limited to 'src/network/recvfrom.c')
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