analyzer: more test coverage for named constants

gcc/testsuite/ChangeLog:
	* gcc.dg/analyzer/named-constants-via-command-line.c: New test.
	* gcc.dg/analyzer/named-constants-via-macros-3.c: New test.
	* gcc.dg/analyzer/named-constants-via-macros-4.c: New test.
	* gcc.dg/analyzer/named-constants-via-macros-empty.c: New test.
	* gcc.dg/analyzer/named-constants-via-macros-gc.c: New test.
	* gcc.dg/analyzer/named-constants-via-macros-traditional.c: New test.
	* gcc.dg/analyzer/named-constants-via-macros-undef.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

7 files changed, 109 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/analyzer/named-constants-via-command-line.c b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-command-line.c
new file mode 100644
index 0000000..4a3dd16
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-command-line.c
@@ -0,0 +1,10 @@
+/* { dg-additional-options "-DO_ACCMODE=42 -DO_RDONLY=0x1 -DO_WRONLY=010" } */
+
+#include "analyzer-decls.h"
+
+void test_sm_fd_constants (void)
+{
+  __analyzer_dump_named_constant ("O_ACCMODE"); /* { dg-warning "named constant 'O_ACCMODE' has value '42'" } */
+  __analyzer_dump_named_constant ("O_RDONLY"); /* { dg-warning "named constant 'O_RDONLY' has value '1'" } */
+  __analyzer_dump_named_constant ("O_WRONLY"); /* { dg-warning "named constant 'O_WRONLY' has value '8'" } */
+}
diff --git a/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-3.c b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-3.c
new file mode 100644
index 0000000..2a3f2b0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-3.c
@@ -0,0 +1,15 @@
+#include "analyzer-decls.h"
+
+/* Various constants used by the fd state machine, as macros
+   that can't be handled.  */
+
+#define O_RDONLY  (1 << 0)
+#define O_WRONLY  (1 << 1)
+#define O_ACCMODE (O_RDONLY | O_WRONLY)
+
+void test_sm_fd_constants (void)
+{
+  __analyzer_dump_named_constant ("O_ACCMODE"); /* { dg-warning "named constant 'O_ACCMODE' has unknown value" } */
+  __analyzer_dump_named_constant ("O_RDONLY"); /* { dg-warning "named constant 'O_RDONLY' has unknown value" } */
+  __analyzer_dump_named_constant ("O_WRONLY"); /* { dg-warning "named constant 'O_WRONLY' has unknown value" } */
+}
diff --git a/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-4.c b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-4.c
new file mode 100644
index 0000000..16eef96
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-4.c
@@ -0,0 +1,15 @@
+#include "analyzer-decls.h"
+
+/* Various constants used by the fd state machine, as macros
+   that can't be handled.  */
+
+#define O_ACCMODE(X) 42
+#define O_RDONLY(X)  0x1
+#define O_WRONLY(X)  010
+
+void test_sm_fd_constants (void)
+{
+  __analyzer_dump_named_constant ("O_ACCMODE"); /* { dg-warning "named constant 'O_ACCMODE' has unknown value" } */
+  __analyzer_dump_named_constant ("O_RDONLY"); /* { dg-warning "named constant 'O_RDONLY' has unknown value" } */
+  __analyzer_dump_named_constant ("O_WRONLY"); /* { dg-warning "named constant 'O_WRONLY' has unknown value" } */
+}
diff --git a/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-empty.c b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-empty.c
new file mode 100644
index 0000000..3d347e2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-empty.c
@@ -0,0 +1,14 @@
+#include "analyzer-decls.h"
+
+/* Various constants used by the fd state machine.  */
+
+#define O_ACCMODE
+#define O_RDONLY
+#define O_WRONLY
+
+void test_sm_fd_constants (void)
+{
+  __analyzer_dump_named_constant ("O_ACCMODE"); /* { dg-warning "named constant 'O_ACCMODE' has unknown value" } */
+  __analyzer_dump_named_constant ("O_RDONLY"); /* { dg-warning "named constant 'O_RDONLY' has unknown value" } */
+  __analyzer_dump_named_constant ("O_WRONLY"); /* { dg-warning "named constant 'O_WRONLY' has unknown value" } */
+}
diff --git a/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-gc.c b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-gc.c
new file mode 100644
index 0000000..e7b12f3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-gc.c
@@ -0,0 +1,21 @@
+/* { dg-additional-options "--param ggc-min-expand=0 --param ggc-min-heapsize=0" } */
+
+#include "analyzer-decls.h"
+
+/* Various constants used by the fd state machine.  */
+
+#define O_ACCMODE 42
+#define O_RDONLY  0x1
+#define O_WRONLY  010
+
+void test_sm_fd_constants (void)
+{
+  __analyzer_dump_named_constant ("O_ACCMODE"); /* { dg-warning "named constant 'O_ACCMODE' has value '42'" } */
+  __analyzer_dump_named_constant ("O_RDONLY"); /* { dg-warning "named constant 'O_RDONLY' has value '1'" } */
+  __analyzer_dump_named_constant ("O_WRONLY"); /* { dg-warning "named constant 'O_WRONLY' has value '8'" } */
+}
+
+void test_unknown (void)
+{
+  __analyzer_dump_named_constant ("UNKNOWN"); /* { dg-warning "named constant 'UNKNOWN' has unknown value" } */
+}
diff --git a/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-traditional.c b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-traditional.c
new file mode 100644
index 0000000..64acaad
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-traditional.c
@@ -0,0 +1,16 @@
+/* { dg-additional-options "-traditional-cpp" } */
+
+#include "analyzer-decls.h"
+
+/* Various constants used by the fd state machine.  */
+
+#define O_ACCMODE 42
+#define O_RDONLY  0x1
+#define O_WRONLY  010
+
+void test_sm_fd_constants (void)
+{
+  __analyzer_dump_named_constant ("O_ACCMODE"); /* { dg-warning "named constant 'O_ACCMODE' has unknown value" } */
+  __analyzer_dump_named_constant ("O_RDONLY"); /* { dg-warning "named constant 'O_RDONLY' has unknown value" } */
+  __analyzer_dump_named_constant ("O_WRONLY"); /* { dg-warning "named constant 'O_WRONLY' has unknown value" } */
+}
diff --git a/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-undef.c b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-undef.c
new file mode 100644
index 0000000..46c0322
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/named-constants-via-macros-undef.c
@@ -0,0 +1,18 @@
+#include "analyzer-decls.h"
+
+/* Various constants used by the fd state machine.  */
+
+#define O_ACCMODE 42
+#define O_RDONLY  0x1
+#define O_WRONLY  010
+
+#undef O_ACCMODE
+#undef O_RDONLY
+#undef O_WRONLY
+
+void test_sm_fd_constants (void)
+{
+  __analyzer_dump_named_constant ("O_ACCMODE"); /* { dg-warning "named constant 'O_ACCMODE' has unknown value" } */
+  __analyzer_dump_named_constant ("O_RDONLY"); /* { dg-warning "named constant 'O_RDONLY' has unknown value" } */
+  __analyzer_dump_named_constant ("O_WRONLY"); /* { dg-warning "named constant 'O_WRONLY' has unknown value" } */
+}