Merge from trunk revision 3a39a31b8ae9c6465434aefa657f7fcc86f905c0.devel/gccgo

1 files changed, 45 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/analyzer/out-of-bounds-diagram-3.c b/gcc/testsuite/gcc.dg/analyzer/out-of-bounds-diagram-3.c
new file mode 100644
index 0000000..064f3fa
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/analyzer/out-of-bounds-diagram-3.c
@@ -0,0 +1,45 @@
+/* The multiline output assumes sizeof(size_t) == 8.
+   { dg-require-effective-target lp64 } */
+
+/* { dg-additional-options "-fdiagnostics-text-art-charset=unicode" } */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+struct str {
+  size_t len;
+  char data[];
+};
+
+struct str *
+make_str_badly (const char *src)
+{
+  size_t len = strlen(src);
+  struct str *str = malloc(sizeof(str) + len); /* { dg-message "\\(1\\) capacity: 'len \\+ 8' bytes" } */
+  if (!str)
+    return NULL;
+  str->len = len;
+  memcpy(str->data, src, len);
+  str->data[len] = '\0'; /* { dg-warning "heap-based buffer overflow" } */
+  return str;
+}
+
+/* { dg-begin-multiline-output "" }
+
+                                      ┌──────────────────────────────────┐
+                                      │       write of '(char) 0'        │
+                                      └──────────────────────────────────┘
+                                                       │
+                                                       │
+                                                       v
+  ┌──────────────────────────────────┐┌──────────────────────────────────┐
+  │ buffer allocated on heap at (1)  ││        after valid range         │
+  └──────────────────────────────────┘└──────────────────────────────────┘
+  ├────────────────┬─────────────────┤├────────────────┬─────────────────┤
+                   │                                   │
+      ╭────────────┴────────────╮            ╭─────────┴────────╮
+      │capacity: 'len + 8' bytes│            │overflow of 1 byte│
+      ╰─────────────────────────╯            ╰──────────────────╯
+
+   { dg-end-multiline-output "" } */