diff options
Diffstat (limited to 'tests/run-make/incr-add-rust-src-component/Makefile')
| -rw-r--r-- | tests/run-make/incr-add-rust-src-component/Makefile | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/run-make/incr-add-rust-src-component/Makefile b/tests/run-make/incr-add-rust-src-component/Makefile new file mode 100644 index 000000000..fd09c2299 --- /dev/null +++ b/tests/run-make/incr-add-rust-src-component/Makefile @@ -0,0 +1,45 @@ +# ignore-cross-compile +include ../tools.mk + +# rust-lang/rust#70924: Test that if we add rust-src component in between two +# incremental compiles, the compiler does not ICE on the second. + +# This test uses `ln -s` rather than copying to save testing time, but its +# usage doesn't work on windows. So ignore windows. + +# ignore-windows + +SYSROOT:=$(shell $(RUSTC) --print sysroot) +FAKEROOT=$(TMPDIR)/fakeroot +INCR=$(TMPDIR)/incr + +# Make a local copy of the sysroot; then remove the rust-src part of it, if +# present, for the *first* build. Then put in a facsimile of the rust-src +# component for the second build, in order to expose the ICE from issue #70924. +# +# Note that it is much easier to just do `cp -a $(SYSROOT)/* $(FAKEROOT)` as a +# first step, but I am concerned that would be too expensive in a unit test +# compared to making symbolic links. +# +# Anyway, the pattern you'll see here is: For every prefix in +# root/lib/rustlib/src, link all of prefix parent content, then remove the +# prefix, then loop on the next prefix. This way, we basically create a copy of +# the context around root/lib/rustlib/src, and can freely add/remove the src +# component itself. +all: + mkdir $(FAKEROOT) + ln -s $(SYSROOT)/* $(FAKEROOT) + rm -f $(FAKEROOT)/lib + mkdir $(FAKEROOT)/lib + ln -s $(SYSROOT)/lib/* $(FAKEROOT)/lib + rm -f $(FAKEROOT)/lib/rustlib + mkdir $(FAKEROOT)/lib/rustlib + ln -s $(SYSROOT)/lib/rustlib/* $(FAKEROOT)/lib/rustlib + rm -f $(FAKEROOT)/lib/rustlib/src + mkdir $(FAKEROOT)/lib/rustlib/src + ln -s $(SYSROOT)/lib/rustlib/src/* $(FAKEROOT)/lib/rustlib/src + rm -f $(FAKEROOT)/lib/rustlib/src/rust + $(RUSTC) --sysroot $(FAKEROOT) -C incremental=$(INCR) main.rs + mkdir -p $(FAKEROOT)/lib/rustlib/src/rust/src/libstd + touch $(FAKEROOT)/lib/rustlib/src/rust/src/libstd/lib.rs + $(RUSTC) --sysroot $(FAKEROOT) -C incremental=$(INCR) main.rs |