rust/tests/run-make/c-unwind-abi-catch-lib-panic/Makefile

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# ignore-cross-compile
# needs-unwind
include ../tools.mk
add integration tests, unwind across FFI boundary ### Integration Tests This commit introduces some new fixtures to the `run-make-fulldeps` test suite. * c-unwind-abi-catch-panic: Exercise unwinding a panic. This catches a panic across an FFI boundary and downcasts it into an integer. * c-unwind-abi-catch-lib-panic: This is similar to the previous `*catch-panic` test, however in this case the Rust code that panics resides in a separate crate. ### Add `rust_eh_personality` to `#[no_std]` alloc tests This commit addresses some test failures that now occur in the following two tests: * no_std-alloc-error-handler-custom.rs * no_std-alloc-error-handler-default.rs Each test now defines a `rust_eh_personality` extern function, in the same manner as shown in the "Writing an executable without stdlib" section of the `lang_items` documentation here: https://doc.rust-lang.org/unstable-book/language-features/lang-items.html#writing-an-executable-without-stdlib Without this change, these tests would fail to compile due to a linking error explaining that there was an "undefined reference to `rust_eh_personality'." ### Updated hash * update 32-bit hash in `impl1` test ### Panics This commit uses `panic!` macro invocations that return a string, rather than using an integer as a panic payload. Doing so avoids the following warnings that were observed during rollup for the `*-msvc-1` targets: ``` warning: panic message is not a string literal --> panic.rs:10:16 | 10 | panic!(x); // That is too big! | ^ | = note: `#[warn(non_fmt_panic)]` on by default = note: this is no longer accepted in Rust 2021 help: add a "{}" format string to Display the message | 10 | panic!("{}", x); // That is too big! | ^^^^^ help: or use std::panic::panic_any instead | 10 | std::panic::panic_any(x); // That is too big! | ^^^^^^^^^^^^^^^^^^^^^ warning: 1 warning emitted ``` See: https://github.com/rust-lang-ci/rust/runs/1992118428 As these errors imply, panicking without a format string will be disallowed in Rust 2021, per #78500.
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all: archive
# Compile `main.rs`, which will link into our library, and run it.
$(RUSTC) main.rs
$(call RUN,main)
ifdef IS_MSVC
archive: add.o panic.o
# Now, create an archive using these two objects.
$(AR) crus $(TMPDIR)/add.lib $(TMPDIR)/add.o $(TMPDIR)/panic.o
else
archive: add.o panic.o
# Now, create an archive using these two objects.
$(AR) crus $(TMPDIR)/libadd.a $(TMPDIR)/add.o $(TMPDIR)/panic.o
endif
# Compile `panic.rs` into an object file.
#
# Note that we invoke `rustc` directly, so we may emit an object rather
# than an archive. We'll do that later.
panic.o:
$(BARE_RUSTC) $(RUSTFLAGS) \
--out-dir $(TMPDIR) \
--emit=obj panic.rs
# Compile `add.c` into an object file.
add.o:
$(call COMPILE_OBJ,$(TMPDIR)/add.o,add.c)