Dear developers,
We are successfully using gmp in several of our projects. Thanks for all the
efforts you put into the project.
I’m fully aware that compilation time warnings are not the same as bugs,
however, I still would like to draw your attention to the following three
warnings I get during compilation of files including gmp.h.
They prevent simple usage of -Werror.
/usr/local/include/gmp.h:2139:345: warning: equality comparison with extraneous
parentheses [-Wparentheses-equality]
do { mp_size_t __gmp_i; mp_limb_t __gmp_x; __gmp_i = (__gmp_ysize); if
(__gmp_i != 0) { if (__gmpn_add_n (__gmp_wp, __gmp_xp, __gmp_yp, __gmp_i)) { do
{ if (__gmp_i >= (__gmp_xsize)) { (__gmp_c) = 1; goto __gmp_done; } __gmp_x =
(__gmp_xp)[__gmp_i]; } while ((((__gmp_wp)[__gmp_i++] = (__gmp_x + 1) & ((~
(static_cast<mp_limb_t> (0))) >> 0)) == 0)); } } if ((__gmp_wp) != (__gmp_xp))
do { mp_size_t __gmp_j; ; for (__gmp_j = (__gmp_i); __gmp_j < (__gmp_xsize);
__gmp_j++) (__gmp_wp)[__gmp_j] = (__gmp_xp)[__gmp_j]; } while (0); (__gmp_c) =
0; __gmp_done: ; } while (0);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
/usr/local/include/gmp.h:2139:345: note: remove extraneous parentheses around
the comparison to silence this warning
do { mp_size_t __gmp_i; mp_limb_t __gmp_x; __gmp_i = (__gmp_ysize); if
(__gmp_i != 0) { if (__gmpn_add_n (__gmp_wp, __gmp_xp, __gmp_yp, __gmp_i)) { do
{ if (__gmp_i >= (__gmp_xsize)) { (__gmp_c) = 1; goto __gmp_done; } __gmp_x =
(__gmp_xp)[__gmp_i]; } while ((((__gmp_wp)[__gmp_i++] = (__gmp_x + 1) & ((~
(static_cast<mp_limb_t> (0))) >> 0)) == 0)); } } if ((__gmp_wp) != (__gmp_xp))
do { mp_size_t __gmp_j; ; for (__gmp_j = (__gmp_i); __gmp_j < (__gmp_xsize);
__gmp_j++) (__gmp_wp)[__gmp_j] = (__gmp_xp)[__gmp_j]; } while (0); (__gmp_c) =
0; __gmp_done: ; } while (0);
~
^ ~
/usr/local/include/gmp.h:2139:345: note: use '=' to turn this equality
comparison into an assignment
do { mp_size_t __gmp_i; mp_limb_t __gmp_x; __gmp_i = (__gmp_ysize); if
(__gmp_i != 0) { if (__gmpn_add_n (__gmp_wp, __gmp_xp, __gmp_yp, __gmp_i)) { do
{ if (__gmp_i >= (__gmp_xsize)) { (__gmp_c) = 1; goto __gmp_done; } __gmp_x =
(__gmp_xp)[__gmp_i]; } while ((((__gmp_wp)[__gmp_i++] = (__gmp_x + 1) & ((~
(static_cast<mp_limb_t> (0))) >> 0)) == 0)); } } if ((__gmp_wp) != (__gmp_xp))
do { mp_size_t __gmp_j; ; for (__gmp_j = (__gmp_i); __gmp_j < (__gmp_xsize);
__gmp_j++) (__gmp_wp)[__gmp_j] = (__gmp_xp)[__gmp_j]; } while (0); (__gmp_c) =
0; __gmp_done: ; } while (0);
To reproduce, include gmp.h and compile using
Apple LLVM version 7.0.2 (clang-700.1.81)
Target: x86_64-apple-darwin15.0.0
Thread model: posix
Kind regards,
Sebastian Junges
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