1 files changed, 55 insertions, 0 deletions
diff --git a/clang/test/Sema/warn-strlcpycat-size.c b/clang/test/Sema/warn-strlcpycat-size.c
new file mode 100644
index 0000000..8babdde
--- /dev/null
+++ b/clang/test/Sema/warn-strlcpycat-size.c
@@ -0,0 +1,55 @@
+// RUN: %clang_cc1 -Wstrlcpy-strlcat-size -verify -fsyntax-only %s
+
+typedef __SIZE_TYPE__ size_t;
+size_t strlcpy (char * restrict dst, const char * restrict src, size_t size);
+size_t strlcat (char * restrict dst, const char * restrict src, size_t size);
+size_t strlen (const char *s);
+
+char s1[100];
+char s2[200];
+char * s3;
+
+struct {
+  char f1[100];
+  char f2[100][3];
+} s4, **s5;
+
+int x;
+
+void f(void)
+{
+  strlcpy(s1, s2, sizeof(s1)); // no warning
+  strlcpy(s1, s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}}
+  strlcpy(s1, s3, strlen(s3)+1); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}}
+  strlcat(s2, s3, sizeof(s3)); // expected-warning {{size argument in 'strlcat' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}}
+  strlcpy(s4.f1, s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}}
+  strlcpy((*s5)->f2[x], s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}}
+  strlcpy(s1+3, s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}}
+}
+
+// Don't issue FIXIT for flexible arrays.
+struct S {
+  int y; 
+  char x[];
+};
+
+void flexible_arrays(struct S *s) {
+  char str[] = "hi";
+  strlcpy(s->x, str, sizeof(str));  // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}}
+}
+
+// Don't issue FIXIT for destinations of size 1.
+void size_1() {
+  char z[1];
+  char str[] = "hi";
+
+  strlcpy(z, str, sizeof(str));  // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}}
+}
+
+// Support VLAs.
+void vlas(int size) {
+  char z[size];
+  char str[] = "hi";
+
+  strlcpy(z, str, sizeof(str)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}}
+}