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-rw-r--r--src/test/run-make/remap-path-prefix-dwarf/Makefile77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/test/run-make/remap-path-prefix-dwarf/Makefile b/src/test/run-make/remap-path-prefix-dwarf/Makefile
new file mode 100644
index 000000000..561a343d6
--- /dev/null
+++ b/src/test/run-make/remap-path-prefix-dwarf/Makefile
@@ -0,0 +1,77 @@
+# This test makes sure that --remap-path-prefix has the expected effects on paths in debuginfo.
+# It tests several cases, each of them has a detailed description attached to it.
+
+# ignore-windows
+
+SRC_DIR := $(abspath .)
+SRC_DIR_PARENT := $(abspath ..)
+
+-include ../../run-make-fulldeps/tools.mk
+
+all: \
+ abs_input_outside_working_dir \
+ rel_input_remap_working_dir \
+ rel_input_remap_working_dir_parent \
+ rel_input_remap_working_dir_child \
+ abs_input_inside_working_dir \
+ abs_input_outside_working_dir
+
+# The compiler is called with an *ABSOLUTE PATH* as input, and that absolute path *is* within
+# the working directory of the compiler. We are remapping the path that contains `src`.
+abs_input_inside_working_dir:
+ # We explicitly switch to a directory that *is* a prefix of the directory our
+ # source code is contained in.
+ cd $(SRC_DIR) && $(RUSTC) $(SRC_DIR)/src/quux.rs -o "$(TMPDIR)/abs_input_inside_working_dir.rlib" -Cdebuginfo=2 --remap-path-prefix $(SRC_DIR)=REMAPPED
+ # We expect the path to the main source file to be remapped.
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump $(TMPDIR)/abs_input_inside_working_dir.rlib | $(CGREP) "REMAPPED/src/quux.rs"
+ # No weird duplication of remapped components (see #78479)
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump $(TMPDIR)/abs_input_inside_working_dir.rlib | $(CGREP) -v "REMAPPED/REMAPPED"
+
+# The compiler is called with an *ABSOLUTE PATH* as input, and that absolute path is *not* within
+# the working directory of the compiler. We are remapping both the path that contains `src` and
+# the working directory to the same thing. This setup corresponds to a workaround that is needed
+# when trying to remap everything to something that looks like a local path.
+# Relative paths are interpreted as relative to the compiler's working directory (e.g. in
+# debuginfo). If we also remap the working directory, the compiler strip it from other paths so
+# that the final outcome is the desired one again.
+abs_input_outside_working_dir:
+ # We explicitly switch to a directory that is *not* a prefix of the directory our
+ # source code is contained in.
+ cd $(TMPDIR) && $(RUSTC) $(SRC_DIR)/src/quux.rs -o "$(TMPDIR)/abs_input_outside_working_dir.rlib" -Cdebuginfo=2 --remap-path-prefix $(SRC_DIR)=REMAPPED --remap-path-prefix $(TMPDIR)=REMAPPED
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump $(TMPDIR)/abs_input_outside_working_dir.rlib | $(CGREP) "REMAPPED/src/quux.rs"
+ # No weird duplication of remapped components (see #78479)
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump $(TMPDIR)/abs_input_outside_working_dir.rlib | $(CGREP) -v "REMAPPED/REMAPPED"
+
+# The compiler is called with a *RELATIVE PATH* as input. We are remapping the working directory of
+# the compiler, which naturally is an implicit prefix of our relative input path. Debuginfo will
+# expand the relative path to an absolute path and we expect the working directory to be remapped
+# in that expansion.
+rel_input_remap_working_dir:
+ cd $(SRC_DIR) && $(RUSTC) src/quux.rs -o "$(TMPDIR)/rel_input_remap_working_dir.rlib" -Cdebuginfo=2 --remap-path-prefix "$(SRC_DIR)=REMAPPED"
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir.rlib" | $(CGREP) "REMAPPED/src/quux.rs"
+ # No weird duplication of remapped components (see #78479)
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir.rlib" | $(CGREP) -v "REMAPPED/REMAPPED"
+
+# The compiler is called with a *RELATIVE PATH* as input. We are remapping a *SUB-DIRECTORY* of the
+# compiler's working directory. This test makes sure that that directory is remapped even though it
+# won't actually show up in this form in the compiler's SourceMap and instead is only constructed
+# on demand during debuginfo generation.
+rel_input_remap_working_dir_child:
+ cd $(SRC_DIR) && $(RUSTC) src/quux.rs -o "$(TMPDIR)/rel_input_remap_working_dir_child.rlib" -Cdebuginfo=2 --remap-path-prefix "$(SRC_DIR)/src=REMAPPED"
+ # We expect `src/quux.rs` to have been remapped to `REMAPPED/quux.rs`.
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir_child.rlib" | $(CGREP) "REMAPPED/quux.rs"
+ # We don't want to find the path that we just remapped anywhere in the DWARF
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir_child.rlib" | $(CGREP) -v "$(SRC_DIR)/src"
+ # No weird duplication of remapped components (see #78479)
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir_child.rlib" | $(CGREP) -v "REMAPPED/REMAPPED"
+
+# The compiler is called with a *RELATIVE PATH* as input. We are remapping a *PARENT DIRECTORY* of
+# the compiler's working directory.
+rel_input_remap_working_dir_parent:
+ cd $(SRC_DIR) && $(RUSTC) src/quux.rs -o "$(TMPDIR)/rel_input_remap_working_dir_parent.rlib" -Cdebuginfo=2 --remap-path-prefix "$(SRC_DIR_PARENT)=REMAPPED"
+ # We expect `src/quux.rs` to have been remapped to `REMAPPED/remap-path-prefix-dwarf/src/quux.rs`.
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir_parent.rlib" | $(CGREP) "REMAPPED/remap-path-prefix-dwarf/src/quux.rs"
+ # We don't want to find the path that we just remapped anywhere in the DWARF
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir_parent.rlib" | $(CGREP) -v "$(SRC_DIR_PARENT)"
+ # No weird duplication of remapped components (see #78479)
+ "$(LLVM_BIN_DIR)"/llvm-dwarfdump "$(TMPDIR)/rel_input_remap_working_dir_parent.rlib" | $(CGREP) -v "REMAPPED/REMAPPED"