--- /dev/null
+/* { dg-do preprocess } */
+
+/* Tests for un-terminated conditional diagnostics.
+ Copyright (c) 1999 Free Software Foundation.
+ Contributed by Zack Weinberg, who made it up all by himself. */
+
+#endif /* { dg-error "#endif" "#endif without #if" } */
+
+#else /* { dg-error "#else" "#else without #if" } */
+#endif /* { dg-error "#endif" "#endif after #else without #if" } */
+
+#elif 0 /* { dg-error "#elif" "#elif without #if" } */
+#endif /* { dg-error "#endif" "#endif after #else without #if" } */
+
+#if 1 /* { dg-bogus "unterminated" "terminated true conditional" } */
+blah
+#endif
+
+#if 0 /* { dg-bogus "unterminated" "terminated false conditional" } */
+ignored
+#endif
+
+/* We shouldn't see unbalanced conditionals inside #if'ed out #includes. */
+#if 0
+#include "cpp-unc1.c"
+#endif
+
+/* The ifdef below should not get an error just because there's a bad if
+ inside the included file.
+ The odd dg-error tag on the include matches the "In file included from"
+ message. */
+#define FOO
+#ifdef FOO /* { dg-bogus "unterminated" "nested unterm" } */
+#include "cpp-unc1.c" /* { dg-error "" } */
+#endif
+
+/* dg.exp doesn't read the included files for tags, so we have to
+ do them explicitly here. */
+/* { dg-error "#if" "unc1.h: unterminated #if" { target native } 3 } */
--- /dev/null
+/* Tests for un-terminated conditionals: 1. */
+
+#if 1 /* { dg-error "unterminated" "unterminated #if" } */
+
+#ifdef notdef /* { dg-bogus "unterminated" "nested terminated #ifdef" } */
+
+blah blah blah
+
+#endif
+
+more text
+
+/* oops! */