Add the clang library to the repo (with some of my changes, too).

1 files changed, 67 insertions, 0 deletions

diff --git a/clang/test/Analysis/casts.c b/clang/test/Analysis/casts.c
new file mode 100644
index 0000000..8b88a2d
--- /dev/null
+++ b/clang/test/Analysis/casts.c
@@ -0,0 +1,67 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -analyze -analyzer-checker=core,experimental.core -analyzer-store=region -verify %s
+// RUN: %clang_cc1 -triple i386-apple-darwin9 -analyze -analyzer-checker=core,experimental.core -analyzer-store=region -verify %s
+
+// Test if the 'storage' region gets properly initialized after it is cast to
+// 'struct sockaddr *'. 
+
+typedef unsigned char __uint8_t;
+typedef unsigned int __uint32_t;
+typedef __uint32_t __darwin_socklen_t;
+typedef __uint8_t sa_family_t;
+typedef __darwin_socklen_t socklen_t;
+struct sockaddr { sa_family_t sa_family; };
+struct sockaddr_storage {};
+
+void getsockname();
+
+void f(int sock) {
+  struct sockaddr_storage storage;
+  struct sockaddr* sockaddr = (struct sockaddr*)&storage;
+  socklen_t addrlen = sizeof(storage);
+  getsockname(sock, sockaddr, &addrlen);
+  switch (sockaddr->sa_family) { // no-warning
+  default:
+    ;
+  }
+}
+
+struct s {
+  struct s *value;
+};
+
+void f1(struct s **pval) {
+  int *tbool = ((void*)0);
+  struct s *t = *pval;
+  pval = &(t->value);
+  tbool = (int *)pval; // use the cast-to type 'int *' to create element region.
+  char c = (unsigned char) *tbool; // Should use cast-to type to create symbol.
+  if (*tbool == -1) // here load the element region with the correct type 'int'
+    (void)3;
+}
+
+void f2(const char *str) {
+ unsigned char ch, cl, *p;
+
+ p = (unsigned char *)str;
+ ch = *p++; // use cast-to type 'unsigned char' to create element region.
+ cl = *p++;
+ if(!cl)
+    cl = 'a';
+}
+
+// Test cast VariableSizeArray to pointer does not crash.
+void *memcpy(void *, void const *, unsigned long);
+typedef unsigned char Byte;
+void doit(char *data, int len) {
+    if (len) {
+        Byte buf[len];
+        memcpy(buf, data, len);
+    }
+}
+
+// PR 6013 and 6035 - Test that a cast of a pointer to long and then to int does not crash SValuator.
+void pr6013_6035_test(void *p) {
+  unsigned int foo;
+  foo = ((long)(p));
+  (void) foo;
+}