Snippets for agg-antigrain 2.5 from Nix aarch64-linux

Sourced from https://hydra.nixos.org/log/4lm1vs68qs3fwacpqf54w3mvzzak2g80-agg-2.5.drv.

../../include/agg_basics.h:215:31: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  215 |             register unsigned q = a * b + (1 << (Shift-1));
      |                               ^

../../include/agg_trans_affine.h:301:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  301 |         register double tmp = *x;
      |                         ^~~

../../include/agg_trans_affine.h:309:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  309 |         register double tmp = *x;
      |                         ^~~

../../include/agg_trans_affine.h:317:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  317 |         register double d = determinant_reciprocal();
      |                         ^

../../include/agg_trans_affine.h:318:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  318 |         register double a = (*x - tx) * d;
      |                         ^

../../include/agg_trans_affine.h:319:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  319 |         register double b = (*y - ty) * d;
      |                         ^

../include/agg_basics.h:215:31: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  215 |             register unsigned q = a * b + (1 << (Shift-1));
      |                               ^

../include/agg_trans_affine.h:301:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  301 |         register double tmp = *x;
      |                         ^~~

../include/agg_trans_affine.h:309:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  309 |         register double tmp = *x;
      |                         ^~~

../include/agg_trans_affine.h:317:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  317 |         register double d = determinant_reciprocal();
      |                         ^

../include/agg_trans_affine.h:318:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  318 |         register double a = (*x - tx) * d;
      |                         ^

../include/agg_trans_affine.h:319:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  319 |         register double b = (*y - ty) * d;
      |                         ^

agg_gsv_text.cpp:564:22: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  564 |                 fread(&m_loaded_font[0], 1, len, fd);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../../../include/agg_basics.h:215:31: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  215 |             register unsigned q = a * b + (1 << (Shift-1));
      |                               ^

../../../include/agg_trans_affine.h:301:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  301 |         register double tmp = *x;
      |                         ^~~

../../../include/agg_trans_affine.h:309:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  309 |         register double tmp = *x;
      |                         ^~~

../../../include/agg_trans_affine.h:317:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  317 |         register double d = determinant_reciprocal();
      |                         ^

../../../include/agg_trans_affine.h:318:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  318 |         register double a = (*x - tx) * d;
      |                         ^

../../../include/agg_trans_affine.h:319:25: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  319 |         register double b = (*y - ty) * d;
      |                         ^

agg_platform_support.cpp:583:26: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'long unsigned int' [-Wformat=]
  583 |                    "R=%08x, R=%08x, B=%08x\n", r_mask, g_mask, b_mask);
      |                       ~~~^                     ~~~~~~
      |                          |                     |
      |                          unsigned int          long unsigned int
      |                       %08lx

agg_platform_support.cpp:583:34: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'long unsigned int' [-Wformat=]
  583 |                    "R=%08x, R=%08x, B=%08x\n", r_mask, g_mask, b_mask);
      |                               ~~~^                     ~~~~~~
      |                                  |                     |
      |                                  unsigned int          long unsigned int
      |                               %08lx

agg_platform_support.cpp:583:42: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'long unsigned int' [-Wformat=]
  583 |                    "R=%08x, R=%08x, B=%08x\n", r_mask, g_mask, b_mask);
      |                                       ~~~^                     ~~~~~~
      |                                          |                     |
      |                                          unsigned int          long unsigned int
      |                                       %08lx

agg_platform_support.cpp:1092:22: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
 1092 |                 fread(m_specific->m_buf_img[idx], 1, width * height * 3, fd);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

agg_platform_support.cpp:1105:22: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
 1105 |                 fread(buf_img, 1, width * height * 3, fd);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~