1 files changed, 92 insertions, 0 deletions
diff --git a/test/Preprocessor/line-directive.c b/test/Preprocessor/line-directive.c
new file mode 100644
index 0000000..ed9a6c4
--- /dev/null
+++ b/test/Preprocessor/line-directive.c
@@ -0,0 +1,92 @@
+// RUN: clang-cc -fsyntax-only -verify -pedantic %s &&
+// RUN: clang-cc -E %s 2>&1 | grep 'blonk.c:92:2: error: #error ABC' &&
+// RUN: clang-cc -E %s 2>&1 | grep 'blonk.c:93:2: error: #error DEF'
+
+#line 'a'            // expected-error {{#line directive requires a positive integer argument}}
+#line 0              // expected-error {{#line directive requires a positive integer argument}}
+#line 00             // expected-error {{#line directive requires a positive integer argument}}
+#line 2147483648     // expected-warning {{C requires #line number to be less than 2147483648, allowed as extension}}
+#line 42             // ok
+#line 42 'a'         // expected-error {{invalid filename for #line directive}}
+#line 42 "foo/bar/baz.h"  // ok
+
+
+// #line directives expand macros.
+#define A 42 "foo"
+#line A
+
+# 42
+# 42 "foo"
+# 42 "foo" 2 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
+# 42 "foo" 1 3  // enter
+# 42 "foo" 2 3  // exit
+# 42 "foo" 2 3 4 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
+# 42 "foo" 3 4
+
+# 'a'            // expected-error {{invalid preprocessing directive}}
+# 42 'f'         // expected-error {{invalid filename for line marker directive}}
+# 42 1 3         // expected-error {{invalid filename for line marker directive}}
+# 42 "foo" 3 1   // expected-error {{invalid flag line marker directive}}
+# 42 "foo" 42    // expected-error {{invalid flag line marker directive}}
+# 42 "foo" 1 2   // expected-error {{invalid flag line marker directive}}
+
+
+// These are checked by the RUN line.
+#line 92 "blonk.c"
+#error ABC  // expected-error {{#error ABC}}
+#error DEF  // expected-error {{#error DEF}}
+
+
+// Verify that linemarker diddling of the system header flag works.
+
+# 192 "glomp.h" // not a system header.
+typedef int x;  // expected-note {{previous definition is here}}
+typedef int x;  // expected-error {{redefinition of typedef 'x' is invalid in C}}
+
+# 192 "glomp.h" 3 // System header.
+typedef int y;  // ok
+typedef int y;  // ok
+
+typedef int q;  // q is in system header.
+
+#line 42 "blonk.h"  // doesn't change system headerness.
+
+typedef int z;  // ok
+typedef int z;  // ok
+
+# 97     // doesn't change system headerness.
+
+typedef int z1;  // ok
+typedef int z1;  // ok
+
+# 42 "blonk.h"  // DOES change system headerness.
+
+typedef int w;  // expected-note {{previous definition is here}}
+typedef int w;  // expected-error {{redefinition of typedef 'w' is invalid in C}}
+
+typedef int q;  // original definition in system header, should not diagnose.
+
+// This should not produce an "extra tokens at end of #line directive" warning,
+// because #line is allowed to contain expanded tokens.
+#define EMPTY()
+#line 2 "foo.c" EMPTY( )
+#line 2 "foo.c" NONEMPTY( )  // expected-warning{{extra tokens at end of #line directive}}
+
+// PR3940
+#line 0xf  // expected-error {{#line directive requires a simple digit sequence}}
+#line 42U  // expected-error {{#line directive requires a simple digit sequence}}
+
+
+// Line markers are digit strings interpreted as decimal numbers, this is
+// 10, not 8.
+#line 010  // expected-warning {{#line directive interprets number as decimal, not octal}}
+extern int array[__LINE__ == 10 ? 1:-1];
+
+/* PR3917 */
+#line 41
+extern char array2[\
+_\
+_LINE__ == 42 ? 1: -1];  /* line marker is location of first _ */
+
+
+