Test std::env::args in a staticlib on glibc Linux

Author: leo60228

src/test/run-make-fulldeps/glibc-staticlib-args/Makefile

@@ -0,0 +1,12 @@
+# only-gnu
+# only-linux
+
+-include ../tools.mk
+
+# This ensures that std::env::args works in a library called from C on glibc Linux.
+
+all:
+	$(RUSTC) --crate-type=staticlib library.rs
+	$(CC) program.c $(call STATICLIB,library) $(call OUT_EXE,program) \
+		$(EXTRACFLAGS) $(EXTRACXXFLAGS)
+	$(call RUN,program)

src/test/run-make-fulldeps/glibc-staticlib-args/library.rs

@@ -0,0 +1,4 @@
+#[no_mangle]
+pub extern fn args_check() {
+    assert_ne!(std::env::args_os().count(), 0);
+}

src/test/run-make-fulldeps/glibc-staticlib-args/program.c

@@ -0,0 +1,7 @@
+// ignore-license
+void args_check();
+
+int main() {
+    args_check();
+    return 0;
+}