3 # `llvm-objdump`'s output looks different on windows than on other platforms.
4 # It should be enough to check on Unix platforms, so:
7 # Staticlibs don't include Rust object files from upstream crates if the same
8 # code was already pulled into the lib via LTO. However, the bug described in
9 # https://github.com/rust-lang/rust/issues/64153 lead to this exclusion not
10 # working properly if the upstream crate was compiled with an explicit filename
13 # This test makes sure that functions defined in the upstream crates do not
14 # appear twice in the final staticlib when listing all the symbols from it.
17 $(RUSTC
) --crate-type rlib upstream.rs
-o
$(TMPDIR
)/libupstream.rlib
-Ccodegen-units
=1
18 $(RUSTC
) --crate-type staticlib downstream.rs
-Clto
-Ccodegen-units
=1 -o
$(TMPDIR
)/libdownstream.a
19 # Dump all the symbols from the staticlib into `syms`
20 "$(LLVM_BIN_DIR)"/llvm-objdump
-t
$(TMPDIR
)/libdownstream.a
> $(TMPDIR
)/syms
21 # Count the global instances of `issue64153_test_function`. There'll be 2
22 # if the `upstream` object file got erroneously included twice.
23 # The line we are testing for with the regex looks something like:
24 # 0000000000000000 g F .text.issue64153_test_function 00000023 issue64153_test_function
25 grep
-c
-e
"[[:space:]]g[[:space:]]*F[[:space:]].*issue64153_test_function" $(TMPDIR
)/syms
> $(TMPDIR
)/count
26 [ "$$(cat $(TMPDIR)/count)" -eq
"1" ]