Avoid injecting sanitizer runtimes into staticlibs (#64629).

2 files changed, 20 insertions, 4 deletions

diff --git a/src/test/run-make-fulldeps/sanitizer-staticlib-link/Makefile b/src/test/run-make-fulldeps/sanitizer-staticlib-link/Makefile
index 200dc1be4de..f56475b441f 100644
--- a/src/test/run-make-fulldeps/sanitizer-staticlib-link/Makefile
+++ b/src/test/run-make-fulldeps/sanitizer-staticlib-link/Makefile
@@ -4,12 +4,18 @@
 
 -include ../tools.mk
 
-# This test builds a staticlib, then an executable that links to it.
-# The staticlib and executable both  are compiled with address sanitizer,
-# and we assert that a fault in the staticlib is correctly detected.
+# This test first builds a staticlib with AddressSanitizer and checks that
+# linking it to an executable fails due to the missing sanitizer runtime.
+# It then builds an executable linking to the staticlib and checks that
+# the fault in the staticlib is detected correctly.
+
+# Note that checking for the link failure actually checks two things at once:
+#   1) That the library has the sanitizer intrumentation
+#   2) and that library does not have the sanitizer runtime
 
 all:
 	$(RUSTC) -g -Z sanitizer=address --crate-type staticlib --target $(TARGET) library.rs
-	$(CC) program.c $(call STATICLIB,library) $(call OUT_EXE,program) $(EXTRACFLAGS) $(EXTRACXXFLAGS)
+	! $(CC) program.c $(call STATICLIB,library) $(call OUT_EXE,program) $(EXTRACFLAGS) $(EXTRACXXFLAGS)
+	$(RUSTC) -g -Z sanitizer=address --crate-type bin --target $(TARGET) -L . program.rs
 	LD_LIBRARY_PATH=$(TMPDIR) $(TMPDIR)/program 2>&1 | $(CGREP) stack-buffer-overflow
 
diff --git a/src/test/run-make-fulldeps/sanitizer-staticlib-link/program.rs b/src/test/run-make-fulldeps/sanitizer-staticlib-link/program.rs
new file mode 100644
index 00000000000..21e1ade2cd5
--- /dev/null
+++ b/src/test/run-make-fulldeps/sanitizer-staticlib-link/program.rs
@@ -0,0 +1,10 @@
+#[link(name = "library")]
+extern {
+    fn overflow();
+}
+
+fn main() {
+    unsafe {
+        overflow();
+    }
+}