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-rw-r--r--Build/source/libs/mpfr/mpfr-src/src/rndna.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/rndna.c b/Build/source/libs/mpfr/mpfr-src/src/rndna.c
index 54c95914bb1..23997bf0ee7 100644
--- a/Build/source/libs/mpfr/mpfr-src/src/rndna.c
+++ b/Build/source/libs/mpfr/mpfr-src/src/rndna.c
@@ -1,6 +1,6 @@
/* mpfr_round_nearest_away -- round to nearest away
-Copyright 2012-2019 Free Software Foundation, Inc.
+Copyright 2012-2020 Free Software Foundation, Inc.
Contributed by the AriC and Caramba projects, INRIA.
This file is part of the GNU MPFR Library.
@@ -137,8 +137,14 @@ mpfr_round_nearest_away_end (mpfr_t rop, int inex)
mpfr_prec_t n;
MPFR_SAVE_EXPO_DECL (expo);
- /* Get back the hidden context. */
- ext = ((mpfr_size_limb_extended_t *) MPFR_MANT(rop)) - MANTISSA;
+ /* Get back the hidden context.
+ Note: The cast to void * prevents the compiler from emitting a warning
+ (or error), such as:
+ cast increases required alignment of target type
+ with the -Wcast-align GCC option. Correct alignment is a consequence
+ of the code that built rop.
+ */
+ ext = ((mpfr_size_limb_extended_t *) (void *) MPFR_MANT(rop)) - MANTISSA;
/* Create tmp with the result of the function. */
tmp[0] = rop[0];