[PATCH] D130666: [InstCombine] Add support for strlcpy folding

[joanahalili via Phabricator via llvm-commits]

joanahalili added a comment.

This might break the following opensource lib https://git.kernel.org/pub/scm/network/iproute2/iproute2.git

In https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/tree/configure#n445

The compilation for the following code no longer fails when setting `-Wno-error-implicit-function-declaration`

  #include <string.h>
  int main(int argc, char **argv) {
  	char dst[10];
  	strlcpy(dst, "test", sizeof(dst));
  	return 0;
  }

Here show the behaviour difference between clang 14.0, clang trunk and gcc.
https://godbolt.org/z/hKETMoEd6


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D130666/new/

https://reviews.llvm.org/D130666