[clang] [NFC][analyzer] OOB test consolidation III: 'outofbound' tests (PR #128508)

[Donát Nagy via cfe-commits]

================
@@ -1,130 +0,0 @@
-// RUN: %clang_analyze_cc1 -Wno-array-bounds -verify %s \
-// RUN:   -analyzer-checker=core \
-// RUN:   -analyzer-checker=unix \
-// RUN:   -analyzer-checker=security.ArrayBound \
-// RUN:   -analyzer-config unix.DynamicMemoryModeling:Optimistic=true
-
-typedef __typeof(sizeof(int)) size_t;
-void *malloc(size_t);
-void *calloc(size_t, size_t);
-
-char f1(void) {
-  char* s = "abcd";
-  char c = s[4]; // no-warning
-  return s[5] + c; // expected-warning{{Out of bound access to memory after}}
-}
-
-void f2(void) {
-  int *p = malloc(12);
-  p[3] = 4; // expected-warning{{Out of bound access to memory after}}
-}
-
-struct three_words {
-  int c[3];
-};
-
-struct seven_words {
-  int c[7];
-};
-
-void f3(void) {
-  struct three_words a, *p;
-  p = &a;
-  p[0] = a; // no-warning
-  p[1] = a; // expected-warning{{Out of bound access to memory after}}
-}
-
-void f4(void) {
-  struct seven_words c;
-  struct three_words a, *p = (struct three_words *)&c;
-  p[0] = a; // no-warning
-  p[1] = a; // no-warning
-  p[2] = a; // should warn
-  // FIXME: This is an overflow, but currently security.ArrayBound only checks
-  // that the _beginning_ of the accessed element is within bounds.
-}
-
-void f5(void) {
-  char *p = calloc(2,2);
-  p[3] = '.'; // no-warning
-  p[4] = '!'; // expected-warning{{Out of bound access}}
-}
-
-void f6(void) {
-  char a[2];
-  int *b = (int*)a;
-  b[1] = 3; // expected-warning{{Out of bound access}}
-}
-
-void f7(void) {
-  struct three_words a;
-  a.c[3] = 1; // expected-warning{{Out of bound access}}
-}
-
-void vla(int a) {
-  if (a == 5) {
-    int x[a];
-    x[4] = 4; // no-warning
-    x[5] = 5; // expected-warning{{Out of bound access}}
-  }
-}
-
-void alloca_region(int a) {
-  if (a == 5) {
-    char *x = __builtin_alloca(a);
-    x[4] = 4; // no-warning
-    x[5] = 5; // expected-warning{{Out of bound access}}
-  }
-}
-
-int symbolic_index(int a) {
-  int x[2] = {1, 2};
-  if (a == 2) {
-    return x[a]; // expected-warning{{Out of bound access}}
-  }
-  return 0;
-}
-
-int symbolic_index2(int a) {
-  int x[2] = {1, 2};
-  if (a < 0) {
-    return x[a]; // expected-warning{{Out of bound access}}
-  }
-  return 0;
-}
----------------
NagyDonat wrote:

Symbolic indices are tested in very many testcases, including e.g. [symbolicIndex](https://github.com/llvm/llvm-project/blob/72768d9bb8ad3e97a852270726f04d7167d9ef50/clang/test/Analysis/out-of-bounds-diagnostics.c#L373) in `out-of-bounds-diagnostics.c`.

https://github.com/llvm/llvm-project/pull/128508