path: root/src/multibyte/mblen.c
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authorRich Felker <>2016-06-09 13:42:06 -0400
committerRich Felker <>2016-06-09 13:42:06 -0400
commit1e6fc0b690191005a49468c296ad49d0caacacf1 (patch)
tree58025919ba7a72f208e7e5c244a698caebddf9ab /src/multibyte/mblen.c
parenta0bb50a14216e7be7453abee2e7b5830e2a7c4c1 (diff)
avoid padding gaps in struct sockaddr_storage
compilers are free not to copy, or in some cases to clobber, padding bytes in a structure. while it's an aliasing violation, and thus undefined behavior, to copy or manipulate other sockaddr types using sockaddr_storage, it seems likely that traditional code attempts to do so, and the original intent of the sockaddr_storage structure was probably to allow such usage. in the interest of avoiding silent and potentially dangerous breakage, ensure that there are no actual padding bytes in sockaddr_storage by moving and adjusting the size of the __ss_padding member so that it fits exactly. this change also removes a silent assumption that the alignment of long is equal to its size.
Diffstat (limited to 'src/multibyte/mblen.c')
0 files changed, 0 insertions, 0 deletions