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musl uses an `int` instead of a `unsigend long` for the ioctl function
prototype, contrary to glibc, since POSIX mandates the former. This
causes a spurious error on ppc64le which can be silenced by casting to
int explicitly.
See https://www.openwall.com/lists/musl/2020/01/20/2
diff -upr a/src/ccache/storage/local/LocalStorage.cpp b/src/ccache/storage/local/LocalStorage.cpp
--- a/src/ccache/storage/local/LocalStorage.cpp 2024-06-30 20:46:01.000000000 +0200
+++ b/src/ccache/storage/local/LocalStorage.cpp 2024-07-03 16:29:39.073705276 +0200
@@ -264,7 +264,7 @@ clone_file(const std::string& src, const
}
}
- if (ioctl(*dest_fd, FICLONE, *src_fd) != 0) {
+ if (ioctl(*dest_fd, (int)FICLONE, *src_fd) != 0) {
throw core::Error(strerror(errno));
}
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