re PR c++/65977 (Constexpr should be allowed in declaration of friend template specia...

[gcc.git] / gcc / asan.c

diff --git a/gcc/asan.c b/gcc/asan.c
index cd6ccdc90706a80832961ea5c508b6b3e476e276..5fac24703231867f0be63314a8927f8821afbde7 100644 (file)
--- a/gcc/asan.c
+++ b/gcc/asan.c
@@ -22,19 +22,11 @@ along with GCC; see the file COPYING3.  If not see
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
-#include "hash-set.h"
-#include "machmode.h"
-#include "vec.h"
-#include "double-int.h"
-#include "input.h"
 #include "alias.h"
 #include "symtab.h"
 #include "options.h"
-#include "wide-int.h"
-#include "inchash.h"
 #include "tree.h"
 #include "fold-const.h"
-#include "hash-table.h"
 #include "predict.h"
 #include "tm.h"
 #include "hard-reg-set.h"
@@ -46,7 +38,6 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-ssa-alias.h"
 #include "internal-fn.h"
 #include "gimple-expr.h"
-#include "is-a.h"
 #include "gimple.h"
 #include "gimplify.h"
 #include "gimple-iterator.h"
@@ -54,9 +45,6 @@ along with GCC; see the file COPYING3.  If not see
 #include "varasm.h"
 #include "stor-layout.h"
 #include "tree-iterator.h"
-#include "hash-map.h"
-#include "plugin-api.h"
-#include "ipa-ref.h"
 #include "cgraph.h"
 #include "stringpool.h"
 #include "tree-ssanames.h"
@@ -64,12 +52,8 @@ along with GCC; see the file COPYING3.  If not see
 #include "asan.h"
 #include "gimple-pretty-print.h"
 #include "target.h"
-#include "hashtab.h"
 #include "rtl.h"
 #include "flags.h"
-#include "statistics.h"
-#include "real.h"
-#include "fixed-value.h"
 #include "insn-config.h"
 #include "expmed.h"
 #include "dojump.h"
@@ -88,6 +72,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "ubsan.h"
 #include "params.h"
 #include "builtins.h"
+#include "fnmatch.h"
 
 /* AddressSanitizer finds out-of-bounds and use-after-free bugs
    with <2x slowdown on average.
@@ -175,7 +160,7 @@ along with GCC; see the file COPYING3.  If not see
 
        where '(...){n}' means the content inside the parenthesis occurs 'n'
        times, with 'n' being the number of variables on the stack.
-     
+
      3/ The following 8 bytes contain the PC of the current function which
      will be used by the run-time library to print an error message.
 
@@ -272,7 +257,7 @@ along with GCC; see the file COPYING3.  If not see
 
 static unsigned HOST_WIDE_INT asan_shadow_offset_value;
 static bool asan_shadow_offset_computed;
-static const char *sanitized_sections;
+static vec<char *> sanitized_sections;
 
 /* Sets shadow offset to value in string VAL.  */
 
@@ -280,7 +265,7 @@ bool
 set_asan_shadow_offset (const char *val)
 {
   char *endp;
-  
+
   errno = 0;
 #ifdef HAVE_LONG_LONG
   asan_shadow_offset_value = strtoull (val, &endp, 0);
@@ -298,9 +283,22 @@ set_asan_shadow_offset (const char *val)
 /* Set list of user-defined sections that need to be sanitized.  */
 
 void
-set_sanitized_sections (const char *secs)
+set_sanitized_sections (const char *sections)
 {
-  sanitized_sections = secs;
+  char *pat;
+  unsigned i;
+  FOR_EACH_VEC_ELT (sanitized_sections, i, pat)
+    free (pat);
+  sanitized_sections.truncate (0);
+
+  for (const char *s = sections; *s; )
+    {
+      const char *end;
+      for (end = s; *end && *end != ','; ++end);
+      size_t len = end - s;
+      sanitized_sections.safe_push (xstrndup (s, len));
+      s = *end ? end + 1 : end;
+    }
 }
 
 /* Checks whether section SEC should be sanitized.  */
@@ -308,17 +306,11 @@ set_sanitized_sections (const char *secs)
 static bool
 section_sanitized_p (const char *sec)
 {
-  if (!sanitized_sections)
-    return false;
-  size_t len = strlen (sec);
-  const char *p = sanitized_sections;
-  while ((p = strstr (p, sec)))
-    {
-      if ((p == sanitized_sections || p[-1] == ',')
-         && (p[len] == 0 || p[len] == ','))
-       return true;
-      ++p;
-    }
+  char *pat;
+  unsigned i;
+  FOR_EACH_VEC_ELT (sanitized_sections, i, pat)
+    if (fnmatch (pat, sec, FNM_PERIOD) == 0)
+      return true;
   return false;
 }
 
@@ -364,23 +356,24 @@ struct asan_mem_ref
 
   /* The size of the access.  */
   HOST_WIDE_INT access_size;
-};
 
-static alloc_pool asan_mem_ref_alloc_pool;
+  /* Pool allocation new operator.  */
+  inline void *operator new (size_t)
+  {
+    return pool.allocate ();
+  }
 
-/* This creates the alloc pool used to store the instances of
-   asan_mem_ref that are stored in the hash table asan_mem_ref_ht.  */
+  /* Delete operator utilizing pool allocation.  */
+  inline void operator delete (void *ptr)
+  {
+    pool.remove ((asan_mem_ref *) ptr);
+  }
 
-static alloc_pool
-asan_mem_ref_get_alloc_pool ()
-{
-  if (asan_mem_ref_alloc_pool == NULL)
-    asan_mem_ref_alloc_pool = create_alloc_pool ("asan_mem_ref",
-                                                sizeof (asan_mem_ref),
-                                                10);
-  return asan_mem_ref_alloc_pool;
-    
-}
+  /* Memory allocation pool.  */
+  static pool_allocator<asan_mem_ref> pool;
+};
+
+pool_allocator<asan_mem_ref> asan_mem_ref::pool ("asan_mem_ref", 10);
 
 /* Initializes an instance of asan_mem_ref.  */
 
@@ -400,8 +393,7 @@ asan_mem_ref_init (asan_mem_ref *ref, tree start, HOST_WIDE_INT access_size)
 static asan_mem_ref*
 asan_mem_ref_new (tree start, HOST_WIDE_INT access_size)
 {
-  asan_mem_ref *ref =
-    (asan_mem_ref *) pool_alloc (asan_mem_ref_get_alloc_pool ());
+  asan_mem_ref *ref = new asan_mem_ref;
 
   asan_mem_ref_init (ref, start, access_size);
   return ref;
@@ -432,12 +424,8 @@ asan_mem_ref_get_end (const asan_mem_ref *ref, tree len)
   return asan_mem_ref_get_end (ref->start, len);
 }
 
-struct asan_mem_ref_hasher
-  : typed_noop_remove <asan_mem_ref>
+struct asan_mem_ref_hasher : nofree_ptr_hash <asan_mem_ref>
 {
-  typedef asan_mem_ref *value_type;
-  typedef asan_mem_ref *compare_type;
-
   static inline hashval_t hash (const asan_mem_ref *);
   static inline bool equal (const asan_mem_ref *, const asan_mem_ref *);
 };
@@ -493,11 +481,7 @@ free_mem_ref_resources ()
   delete asan_mem_ref_ht;
   asan_mem_ref_ht = NULL;
 
-  if (asan_mem_ref_alloc_pool)
-    {
-      free_alloc_pool (asan_mem_ref_alloc_pool);
-      asan_mem_ref_alloc_pool = NULL;
-    }
+  asan_mem_ref::pool.release ();
 }
 
 /* Return true iff the memory reference REF has been instrumented.  */
@@ -2027,7 +2011,7 @@ maybe_instrument_assignment (gimple_stmt_iterator *iter)
                         is_store);
       is_instrumented = true;
     }
- 
+
   if (gimple_assign_load_p (s))
     {
       ref_expr = gimple_assign_rhs1 (s);