poky/meta/recipes-extended/diffutils/diffutils-3.5/diffutils-3.5-gcc7.patch

Cumulative Backports from upstream to address gcc 7 portablility issues
Imported from Fedora

Upstream-Status: Backport
Signed-off-by: Khem Raj <raj.khem@gmail.com>

diff -up diffutils-3.5/lib/intprops.h.than diffutils-3.5/lib/intprops.h
--- diffutils-3.5/lib/intprops.h.than	2017-02-21 09:08:39.470417367 -0500
+++ diffutils-3.5/lib/intprops.h	2017-02-21 09:46:57.090996508 -0500
@@ -1,6 +1,6 @@
 /* intprops.h -- properties of integer types
 
-   Copyright (C) 2001-2016 Free Software Foundation, Inc.
+   Copyright (C) 2001-2017 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published
@@ -47,12 +47,16 @@
 
 /* Minimum and maximum values for integer types and expressions.  */
 
+/* The width in bits of the integer type or expression T.
+   Padding bits are not supported; this is checked at compile-time below.  */
+#define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
+
 /* The maximum and minimum values for the integer type T.  */
 #define TYPE_MINIMUM(t) ((t) ~ TYPE_MAXIMUM (t))
 #define TYPE_MAXIMUM(t)                                                 \
   ((t) (! TYPE_SIGNED (t)                                               \
         ? (t) -1                                                        \
-        : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+        : ((((t) 1 << (TYPE_WIDTH (t) - 2)) - 1) * 2 + 1)))
 
 /* The maximum and minimum values for the type of the expression E,
    after integer promotion.  E should not have side effects.  */
@@ -65,7 +69,13 @@
    ? _GL_SIGNED_INT_MAXIMUM (e)                                         \
    : _GL_INT_NEGATE_CONVERT (e, 1))
 #define _GL_SIGNED_INT_MAXIMUM(e)                                       \
-  (((_GL_INT_CONVERT (e, 1) << (sizeof ((e) + 0) * CHAR_BIT - 2)) - 1) * 2 + 1)
+  (((_GL_INT_CONVERT (e, 1) << (TYPE_WIDTH ((e) + 0) - 2)) - 1) * 2 + 1)
+
+/* Work around OpenVMS incompatibility with C99.  */
+#if !defined LLONG_MAX && defined __INT64_MAX
+# define LLONG_MAX __INT64_MAX
+# define LLONG_MIN __INT64_MIN
+#endif
 
 /* This include file assumes that signed types are two's complement without
    padding bits; the above macros have undefined behavior otherwise.
@@ -84,10 +94,15 @@ verify (TYPE_MAXIMUM (long int) == LONG_
 verify (TYPE_MINIMUM (long long int) == LLONG_MIN);
 verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
 #endif
+/* Similarly, sanity-check one ISO/IEC TS 18661-1:2014 macro if defined.  */
+#ifdef UINT_WIDTH
+verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
+#endif
 
 /* Does the __typeof__ keyword work?  This could be done by
    'configure', but for now it's easier to do it by hand.  */
-#if (2 <= __GNUC__ || defined __IBM__TYPEOF__ \
+#if (2 <= __GNUC__ \
+     || (1210 <= __IBMC__ && defined __IBM__TYPEOF__) \
      || (0x5110 <= __SUNPRO_C && !__STDC__))
 # define _GL_HAVE___TYPEOF__ 1
 #else
@@ -116,8 +131,7 @@ verify (TYPE_MAXIMUM (long long int) ==
    signed, this macro may overestimate the true bound by one byte when
    applied to unsigned types of size 2, 4, 16, ... bytes.  */
 #define INT_STRLEN_BOUND(t)                                     \
-  (INT_BITS_STRLEN_BOUND (sizeof (t) * CHAR_BIT                 \
-                          - _GL_SIGNED_TYPE_OR_EXPR (t))        \
+  (INT_BITS_STRLEN_BOUND (TYPE_WIDTH (t) - _GL_SIGNED_TYPE_OR_EXPR (t)) \
    + _GL_SIGNED_TYPE_OR_EXPR (t))
 
 /* Bound on buffer size needed to represent an integer type or expression T,
@@ -222,20 +236,23 @@ verify (TYPE_MAXIMUM (long long int) ==
    ? (a) < (min) >> (b)                                 \
    : (max) >> (b) < (a))
 
-/* True if __builtin_add_overflow (A, B, P) works when P is null.  */
-#define _GL_HAS_BUILTIN_OVERFLOW_WITH_NULL (7 <= __GNUC__)
+/* True if __builtin_add_overflow (A, B, P) works when P is non-null.  */
+#define _GL_HAS_BUILTIN_OVERFLOW (5 <= __GNUC__)
+
+/* True if __builtin_add_overflow_p (A, B, C) works.  */
+#define _GL_HAS_BUILTIN_OVERFLOW_P (7 <= __GNUC__)
 
 /* The _GL*_OVERFLOW macros have the same restrictions as the
    *_RANGE_OVERFLOW macros, except that they do not assume that operands
    (e.g., A and B) have the same type as MIN and MAX.  Instead, they assume
    that the result (e.g., A + B) has that type.  */
-#if _GL_HAS_BUILTIN_OVERFLOW_WITH_NULL
-# define _GL_ADD_OVERFLOW(a, b, min, max)
-   __builtin_add_overflow (a, b, (__typeof__ ((a) + (b)) *) 0)
-# define _GL_SUBTRACT_OVERFLOW(a, b, min, max)
-   __builtin_sub_overflow (a, b, (__typeof__ ((a) - (b)) *) 0)
-# define _GL_MULTIPLY_OVERFLOW(a, b, min, max)
-   __builtin_mul_overflow (a, b, (__typeof__ ((a) * (b)) *) 0)
+#if _GL_HAS_BUILTIN_OVERFLOW_P
+# define _GL_ADD_OVERFLOW(a, b, min, max)                               \
+   __builtin_add_overflow_p (a, b, (__typeof__ ((a) + (b))) 0)
+# define _GL_SUBTRACT_OVERFLOW(a, b, min, max)                          \
+   __builtin_sub_overflow_p (a, b, (__typeof__ ((a) - (b))) 0)
+# define _GL_MULTIPLY_OVERFLOW(a, b, min, max)                          \
+   __builtin_mul_overflow_p (a, b, (__typeof__ ((a) * (b))) 0)
 #else
 # define _GL_ADD_OVERFLOW(a, b, min, max)                                \
    ((min) < 0 ? INT_ADD_RANGE_OVERFLOW (a, b, min, max)                  \
@@ -315,7 +332,7 @@ verify (TYPE_MAXIMUM (long long int) ==
   _GL_BINARY_OP_OVERFLOW (a, b, _GL_ADD_OVERFLOW)
 #define INT_SUBTRACT_OVERFLOW(a, b) \
   _GL_BINARY_OP_OVERFLOW (a, b, _GL_SUBTRACT_OVERFLOW)
-#if _GL_HAS_BUILTIN_OVERFLOW_WITH_NULL
+#if _GL_HAS_BUILTIN_OVERFLOW_P
 # define INT_NEGATE_OVERFLOW(a) INT_SUBTRACT_OVERFLOW (0, a)
 #else
 # define INT_NEGATE_OVERFLOW(a) \
@@ -349,10 +366,6 @@ verify (TYPE_MAXIMUM (long long int) ==
 #define INT_MULTIPLY_WRAPV(a, b, r) \
   _GL_INT_OP_WRAPV (a, b, r, *, __builtin_mul_overflow, INT_MULTIPLY_OVERFLOW)
 
-#ifndef __has_builtin
-# define __has_builtin(x) 0
-#endif
-
 /* Nonzero if this compiler has GCC bug 68193 or Clang bug 25390.  See:
    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68193
    https://llvm.org/bugs/show_bug.cgi?id=25390
@@ -369,7 +382,7 @@ verify (TYPE_MAXIMUM (long long int) ==
    the operation.  BUILTIN is the builtin operation, and OVERFLOW the
    overflow predicate.  Return 1 if the result overflows.  See above
    for restrictions.  */
-#if 5 <= __GNUC__ || __has_builtin (__builtin_add_overflow)
+#if _GL_HAS_BUILTIN_OVERFLOW
 # define _GL_INT_OP_WRAPV(a, b, r, op, builtin, overflow) builtin (a, b, r)
 #elif 201112 <= __STDC_VERSION__ && !_GL__GENERIC_BOGUS
 # define _GL_INT_OP_WRAPV(a, b, r, op, builtin, overflow) \
@@ -412,7 +425,7 @@ verify (TYPE_MAXIMUM (long long int) ==
 # else
 #  define _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow) \
     _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
-                     long int, LONG_MIN, LONG_MAX))
+                     long int, LONG_MIN, LONG_MAX)
 # endif
 #endif
 
diff -up diffutils-3.5/lib/xalloc-oversized.h.than diffutils-3.5/lib/xalloc-oversized.h
--- diffutils-3.5/lib/xalloc-oversized.h.than	2017-02-21 09:45:13.729168233 -0500
+++ diffutils-3.5/lib/xalloc-oversized.h	2017-02-21 09:45:18.309249247 -0500
@@ -1,6 +1,6 @@
 /* xalloc-oversized.h -- memory allocation size checking
 
-   Copyright (C) 1990-2000, 2003-2004, 2006-2016 Free Software Foundation, Inc.
+   Copyright (C) 1990-2000, 2003-2004, 2006-2017 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -19,48 +19,37 @@
 #define XALLOC_OVERSIZED_H_
 
 #include <stddef.h>
+#include <stdint.h>
 
-/* Default for (non-Clang) compilers that lack __has_builtin.  */
-#ifndef __has_builtin
-# define __has_builtin(x) 0
-#endif
-
-/* True if N * S would overflow in a size calculation.
+/* True if N * S would overflow in a size_t calculation,
+   or would generate a value larger than PTRDIFF_MAX.
    This expands to a constant expression if N and S are both constants.
    By gnulib convention, SIZE_MAX represents overflow in size
-   calculations, so the conservative dividend to use here is
-   SIZE_MAX - 1, since SIZE_MAX might represent an overflowed value.
-   However, malloc (SIZE_MAX) fails on all known hosts where
-   sizeof (ptrdiff_t) <= sizeof (size_t), so do not bother to test for
-   exactly-SIZE_MAX allocations on such hosts; this avoids a test and
-   branch when S is known to be 1.  */
+   calculations, so the conservative size_t-based dividend to use here
+   is SIZE_MAX - 1.  */
 #define __xalloc_oversized(n, s) \
-    ((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n))
+  ((size_t) (PTRDIFF_MAX < SIZE_MAX ? PTRDIFF_MAX : SIZE_MAX - 1) / (s) < (n))
 
+#if PTRDIFF_MAX < SIZE_MAX
+typedef ptrdiff_t __xalloc_count_type;
+#else
+typedef size_t __xalloc_count_type;
+#endif
 
-/* Return 1 if an array of N objects, each of size S, cannot exist due
-   to size arithmetic overflow.  S must be positive and N must be
-   nonnegative.  This is a macro, not a function, so that it
-   works correctly even when SIZE_MAX < N.  */
+/* Return 1 if an array of N objects, each of size S, cannot exist
+   reliably due to size or ptrdiff_t arithmetic overflow.  S must be
+   positive and N must be nonnegative.  This is a macro, not a
+   function, so that it works correctly even when SIZE_MAX < N.  */
 
-/* GCC 7 __builtin_mul_overflow should easily compute this.  See:
-   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68120  */
 #if 7 <= __GNUC__
-# define xalloc_oversized(n, s) __builtin_mul_overflow (n, s, (size_t *) NULL)
-
-/* GCC 5 and Clang __builtin_mul_overflow needs a temporary, and
-   should be used only for non-constant operands, so that
-   xalloc_oversized is a constant expression if both arguments are.
-   Do not use this if pedantic, since pedantic GCC issues a diagnostic
-   for ({ ... }).  */
-#elif ((5 <= __GNUC__ \
-        || (__has_builtin (__builtin_mul_overflow) \
-            && __has_builtin (__builtin_constant_p))) \
-       && !__STRICT_ANSI__)
+# define xalloc_oversized(n, s) \
+   __builtin_mul_overflow_p (n, s, (__xalloc_count_type) 1)
+#elif 5 <= __GNUC__ && !__STRICT_ANSI__
 # define xalloc_oversized(n, s) \
    (__builtin_constant_p (n) && __builtin_constant_p (s) \
     ? __xalloc_oversized (n, s) \
-    : ({ size_t __xalloc_size; __builtin_mul_overflow (n, s, &__xalloc_size); }))
+    : ({ __xalloc_count_type __xalloc_count; \
+         __builtin_mul_overflow (n, s, &__xalloc_count); }))
 
 /* Other compilers use integer division; this may be slower but is
    more portable.  */