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Add -Wunused-const-variable=2 on GCC >=6.1

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This caused a trivial warning in curve25519-donna-64bit.h, which
had two unused constants.  I commented them out.
This commit is contained in:
Nick Mathewson 2016-05-30 12:28:55 -04:00
parent 12517c7303
commit 2ff20c93a5
2 changed files with 3 additions and 2 deletions
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1
configure.ac
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@ -1778,6 +1778,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
CFLAGS="$CFLAGS -Wignored-attributes -Wshift-negative-value -Wshift-overflow=2"
CFLAGS="$CFLAGS -Wnull-dereference"
CFLAGS="$CFLAGS -Wduplicated-cond"
CFLAGS="$CFLAGS -Wunused-const-variable=2"
fi
if test "x$have_shorten64_flag" = "xyes"; then

4
src/ext/ed25519/donna/curve25519-donna-64bit.h
View File

@ -8,9 +8,9 @@
typedef uint64_t bignum25519[5];
static const uint64_t reduce_mask_40 = ((uint64_t)1 << 40) - 1;
//static const uint64_t reduce_mask_40 = ((uint64_t)1 << 40) - 1;
static const uint64_t reduce_mask_51 = ((uint64_t)1 << 51) - 1;
static const uint64_t reduce_mask_56 = ((uint64_t)1 << 56) - 1;
//static const uint64_t reduce_mask_56 = ((uint64_t)1 << 56) - 1;
/* out = in */
DONNA_INLINE static void