rewrite and rename issue-47384 to rmake

This commit is contained in:
Oneirical 2024-06-27 11:08:49 -04:00
parent 86bd3498b2
commit 3a656462ef
6 changed files with 29 additions and 13 deletions

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@ -65,7 +65,6 @@ run-make/issue-35164/Makefile
run-make/issue-36710/Makefile
run-make/issue-37839/Makefile
run-make/issue-40535/Makefile
run-make/issue-47384/Makefile
run-make/issue-47551/Makefile
run-make/issue-69368/Makefile
run-make/issue-83045/Makefile

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@ -0,0 +1,29 @@
// Linkers treat archives differently from object files: all object files participate in linking,
// while archives will only participate in linking if they can satisfy at least one undefined
// reference (version scripts doesn't count). This causes `#[no_mangle]` or `#[used]` items to
// be ignored by the linker, and since they never participate in the linking, using `KEEP` in the
// linker scripts can't keep them either. This causes #47384. After the fix in #95604, this test
// checks that these symbols and sections successfully appear in the output dynamic library.
// See https://github.com/rust-lang/rust/pull/95604
// See https://github.com/rust-lang/rust/issues/47384
//FIXME(Oneirical): ignore flags: only linux and cross compile
use run_make_support::{dynamic_lib_name, llvm_objdump, llvm_readobj, rustc};
fn main() {
rustc().crate_type("lib").input("lib.rs").run();
rustc().crate_type("cdylib").link_args("-Tlinker.ld").input("main.rs").run();
// Ensure `#[used]` and `KEEP`-ed section is there
llvm_objdump()
.arg("--full-contents")
.arg("--section=.static")
.input(dynamic_lib_name("main"))
.run();
// Ensure `#[no_mangle]` symbol is there
llvm_readobj()
.arg("--symbols")
.input(dynamic_lib_name("main"))
.run()
.assert_stdout_contains("bar");
}

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@ -1,12 +0,0 @@
include ../tools.mk
# only-linux
# ignore-cross-compile
all: main.rs
$(RUSTC) --crate-type lib lib.rs
$(RUSTC) --crate-type cdylib -Clink-args="-Tlinker.ld" main.rs
# Ensure `#[used]` and `KEEP`-ed section is there
objdump -s -j".static" $(TMPDIR)/libmain.so
# Ensure `#[no_mangle]` symbol is there
nm $(TMPDIR)/libmain.so | $(CGREP) bar