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Author SHA1 Message Date
David Carlier 8e75de2100 [CStringSyntaxChecker] Check strlcpy sizeof syntax 
The last argument is expected to be the destination buffer size (or less).

    Detects if it points to destination buffer size directly or via a variable.
    Detects if it is an integral, try to detect if the destination buffer can receive the source length.

Updating bsd-string.c unit tests as it make it fails now.

Reviewers: george.karpenpov, NoQ

Reviewed By: george.karpenkov

Differential Revision: https://reviews.llvm.org/D48884

llvm-svn: 337499
 2018-07-19 21:50:03 +00:00
David Carlier 3c90fcebd4 [analyzer] CStringChecker fix for strlcpy when no bytes are copied to the dest buffer 
Again, strlc* does not return a pointer so the zero size case doest not fit.

Reviewers: NoQ, george.karpenkov

Reviewed by: NoQ

Differential Revision: https://reviews.llvm.org/D47007

llvm-svn: 333060
 2018-05-23 04:38:25 +00:00
Artem Dergachev c19843714c [analyzer] Re-apply r331096 "CStringChecker: Add support for BSD strlcpy()...". 
Fixed after revert in r331401.

Patch by David Carlier!

Differential Revision: https://reviews.llvm.org/D45177

llvm-svn: 332303
 2018-05-14 22:32:24 +00:00