The Tor Browser: widget/gtk/compat/glib/gmem.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef GMEM_WRAPPER_H

     6 #define GMEM_WRAPPER_H

     8 #define g_malloc_n g_malloc_n_

     9 #define g_malloc0_n g_malloc0_n_

    10 #define g_realloc_n g_realloc_n_

    11 #include_next <glib/gmem.h>

    12 #undef g_malloc_n

    13 #undef g_malloc0_n

    14 #undef g_realloc_n

    16 #include <glib/gmessages.h>

    18 #undef g_new

    19 #define g_new(type, num) \

    20     ((type *) g_malloc_n((num), sizeof(type)))

    22 #undef g_new0

    23 #define g_new0(type, num) \

    24     ((type *) g_malloc0_n((num), sizeof(type)))

    26 #undef g_renew

    27 #define g_renew(type, ptr, num) \

    28     ((type *) g_realloc_n(ptr, (num), sizeof(type)))

    30 #define _CHECK_OVERFLOW(num, type_size) \

    31     if (G_UNLIKELY(type_size > 0 && num > G_MAXSIZE / type_size)) { \

    32       g_error("%s: overflow allocating %" G_GSIZE_FORMAT "*%" G_GSIZE_FORMAT " bytes", \

    33               G_STRLOC, num, type_size); \

    34     }

    36 static inline gpointer

    37 g_malloc_n(gsize num, gsize type_size)

    38 {

    39   _CHECK_OVERFLOW(num, type_size)

    40   return g_malloc(num * type_size);

    41 }

    43 static inline gpointer

    44 g_malloc0_n(gsize num, gsize type_size)

    45 {

    46   _CHECK_OVERFLOW(num, type_size)

    47   return g_malloc0(num * type_size);

    48 }

    50 static inline gpointer

    51 g_realloc_n(gpointer ptr, gsize num, gsize type_size)

    52 {

    53   _CHECK_OVERFLOW(num, type_size)

    54   return g_realloc(ptr, num * type_size);

    55 }

    56 #endif /* GMEM_WRAPPER_H */

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