analyzer: add test coverage for PR 95000

PR analyzer/95000 isn't fixed yet; add test coverage with XFAILs.

gcc/testsuite/ChangeLog:
	PR analyzer/95000
	* gcc.dg/analyzer/pr95000-1.c: New test.

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

diff --git a/gcc/testsuite/gcc.dg/analyzer/pr95000-1.c b/gcc/testsuite/gcc.dg/analyzer/pr95000-1.c
new file mode 100644 (file)
index 0000000..bb23ab7
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/pr95000-1.c
@@ -0,0 +1,38 @@
+#include "analyzer-decls.h"
+
+void test_1 (char* x)
+{
+  char* y=0;
+  switch (*x) {
+  case 'a': /* { dg-message "to here" } */
+    y="foo";
+  case 'b':
+    if (*x=='a') *y='b'; /* { dg-bogus "dereference of NULL 'y'" "deref of null (PR analyzer/95000)" { xfail *-*-* } } */
+    /* { dg-warning "write to string literal" "write to string literal" { target *-*-* } .-1 } */
+  }
+}
+
+void test_switch_char(char x) {
+  switch (x) {
+  case 'b':
+    __analyzer_eval (x == 'b'); /* { dg-warning "TRUE" "expected" { xfail *-*-* } } */
+    /* { dg-bogus "UNKNOWN" "status quo (PR analyzer/95000)" { xfail *-*-* } .-1 } */
+  }
+}
+
+void test_switch_int(int x) {
+  switch (x) {
+  case 97:
+    __analyzer_eval (x == 97); /* { dg-warning "TRUE" } */
+  }
+}
+
+void test_if_char(char x) {
+  if (x == 'b')
+    __analyzer_eval (x == 'b'); /* { dg-warning "TRUE" } */
+}
+
+void test_if_int(int x) {
+  if (x == 97)
+    __analyzer_eval (x == 97); /* { dg-warning "TRUE" } */
+}