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