Complier warnings

[bkmgit]

Compiler warnings when building on Fedora linux. Can create a pull request to fix most of these if of interest.

giza-axis.c: In function 'giza_axis':
giza-axis.c:106:21: warning: variable 'draw_invert' set but not used [-Wunused-but-set-variable]
  106 |       draw_log = 0, draw_invert = -1, draw_axis = 1;
      |                     ^~~~~~~~~~~

giza-box-time.c: In function '_giza_tbx4':
giza-box-time.c:898:13: warning: 'disp' may be used uninitialized [-Wmaybe-uninitialized]
  898 |             giza_annotate_float(axloc, disp, coord, fjust, text);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
giza-box-time.c:660:44: note: 'disp' was declared here
  660 |     double       time, coord, fjust, rval, disp;
      |                                            ^~~~

giza-cursor-routines.c:43:56: warning: argument 3 of type 'double *' declared as a pointer [-Wvla-parameter]
   43 | _giza_mark_with_cursor (int maxpts, int *npts, double* xpts, double* ypts,
      |                                                ~~~~~~~~^~~~
In file included from giza-cursor-routines.c:28:
giza-cursor-private.h:25:60: note: previously declared as a variable length array 'double[maxpts]'
   25 | void _giza_mark_with_cursor (int maxpts, int *npts, double xpts[maxpts], double ypts[maxpts],
      |                                                     ~~~~~~~^~~~~~~~~~~~
giza-cursor-routines.c:43:70: warning: argument 4 of type 'double *' declared as a pointer [-Wvla-parameter]
   43 | _giza_mark_with_cursor (int maxpts, int *npts, double* xpts, double* ypts,
      |                                                              ~~~~~~~~^~~~
giza-cursor-private.h:25:81: note: previously declared as a variable length array 'double[maxpts]'
   25 | void _giza_mark_with_cursor (int maxpts, int *npts, double xpts[maxpts], double ypts[maxpts],
      |                                                                          ~~~~~~~^~~~~~~~~~~~
giza-cursor-routines.c:207:61: warning: argument 3 of type 'float *' declared as a pointer [-Wvla-parameter]
  207 | _giza_mark_with_cursor_float (int maxpts, int *npts, float* xpts, float* ypts,
      |                                                      ~~~~~~~^~~~
giza-cursor-private.h:27:65: note: previously declared as a variable length array 'float[maxpts]'
   27 | void _giza_mark_with_cursor_float (int maxpts, int *npts, float xpts[maxpts], float ypts[maxpts],
      |                                                           ~~~~~~^~~~~~~~~~~~
giza-cursor-routines.c:207:74: warning: argument 4 of type 'float *' declared as a pointer [-Wvla-parameter]
  207 | _giza_mark_with_cursor_float (int maxpts, int *npts, float* xpts, float* ypts,
      |                                                                   ~~~~~~~^~~~
giza-cursor-private.h:27:85: note: previously declared as a variable length array 'float[maxpts]'
   27 | void _giza_mark_with_cursor_float (int maxpts, int *npts, float xpts[maxpts], float ypts[maxpts],
      |                                                                               ~~~~~~^~~~~~~~~~~~

giza-drivers.c: In function 'giza_query_device':
giza-drivers.c:705:12: warning: 'strncat' output may be truncated copying 4 bytes from a string of length 11 [-Wstringop-truncation]
  705 |            strncat(returnval,devType,4*sizeof(char));
      |            ^

giza-io.c: In function '_giza_write_log_file':
giza-io.c:207:25: warning: '%s' directive writing up to 79 bytes into a region of size 72 [-Wformat-overflow=]
  207 |    sprintf(msg,"writing %s",string);
      |                         ^~  ~~~~~~
In file included from /usr/include/stdio.h:906,
                 from giza-io.c:29:
In function 'sprintf',
    inlined from '_giza_write_log_file' at giza-io.c:207:4:
/usr/include/bits/stdio2.h:30:10: note: '__sprintf_chk' output between 9 and 88 bytes into a destination of size 80
   30 |   return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   31 |                                   __glibc_objsize (__s), __fmt,
      |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   32 |                                   __va_arg_pack ());
      |                                   ~~~~~~~~~~~~~~~~~

giza-scanner.l:81:42: warning: '_giza_greek_to_utf' declared 'static' but never defined [-Wunused-function]
   81 | static char const*                       _giza_greek_to_utf(char letter);
      |                                          ^~~~~~~~~~~~~~~~~~
lex.yy.c:1386:16: warning: 'input' defined but not used [-Wunused-function]
 1386 | #else
      |                ^    
lex.yy.c:1342:17: warning: 'yyunput' defined but not used [-Wunused-function]
 1342 | 
      |                 ^      

giza-pgplot.f90:178:28:

  178 | integer function PGBEG (UNIT, FILE, NXSUB, NYSUB)
      |                            1
Warning: Unused dummy argument 'unit' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:257:66:

  257 | subroutine PGCONB (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, TR, BLANK)
      |                                                                  1
Warning: Unused dummy argument 'blank' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:20:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                    1
Warning: Unused dummy argument 'a' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:52:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                                                    1
Warning: Unused dummy argument 'c1' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:56:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                                                        1
Warning: Unused dummy argument 'c2' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:36:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                                    1
Warning: Unused dummy argument 'i1' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:40:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                                        1
Warning: Unused dummy argument 'i2' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:44:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                                            1
Warning: Unused dummy argument 'j1' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:48:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                                                1
Warning: Unused dummy argument 'j2' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:274:60:

  274 | subroutine PGCONF (A, IDIM, JDIM, I1, I2, J1, J2, C1, C2, TR)
      |                                                            1
Warning: Unused dummy argument 'tr' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:285:70:

  285 | subroutine PGCONL (A, IDIM, JDIM, I1, I2, J1, J2, C, TR, LABEL, INTVAL, MININT)
      |                                                                      1
Warning: Unused dummy argument 'intval' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:285:62:

  285 | subroutine PGCONL (A, IDIM, JDIM, I1, I2, J1, J2, C, TR, LABEL, INTVAL, MININT)
      |                                                              1
Warning: Unused dummy argument 'label' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:285:78:

  285 | subroutine PGCONL (A, IDIM, JDIM, I1, I2, J1, J2, C, TR, LABEL, INTVAL, MININT)
      |                                                                              1
Warning: Unused dummy argument 'minint' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:20:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                    1
Warning: Unused dummy argument 'a' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:51:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                                                   1
Warning: Unused dummy argument 'c' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:36:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                                    1
Warning: Unused dummy argument 'i1' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:40:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                                        1
Warning: Unused dummy argument 'i2' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:44:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                                            1
Warning: Unused dummy argument 'j1' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:48:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                                                1
Warning: Unused dummy argument 'j2' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:55:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                                                       1
Warning: Unused dummy argument 'nc' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:340:61:

  340 | subroutine PGCONX (A, IDIM, JDIM, I1, I2, J1, J2, C, NC, PLOT)
      |                                                             1
Warning: Unused dummy argument 'plot' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:68:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                                                                    1
Warning: Unused dummy argument 'bias' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:76:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                                                                            1
Warning: Unused dummy argument 'center' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:23:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                       1
Warning: Unused dummy argument 'data' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:62:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                                                              1
Warning: Unused dummy argument 'ioff' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:48:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                                                1
Warning: Unused dummy argument 'iy1' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:53:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                                                     1
Warning: Unused dummy argument 'iy2' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:56:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                                                        1
Warning: Unused dummy argument 'x' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:582:83:

  582 | subroutine PGHI2D (DATA, NXV, NYV, IX1, IX2, IY1, IY2, X, IOFF, BIAS, CENTER, YLIMS)
      |                                                                                   1
Warning: Unused dummy argument 'ylims' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:859:20:

  859 | subroutine PGPNTS (N, X, Y, SYMBOL, NS)
      |                    1
Warning: Unused dummy argument 'n' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:859:38:

  859 | subroutine PGPNTS (N, X, Y, SYMBOL, NS)
      |                                      1
Warning: Unused dummy argument 'ns' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:859:34:

  859 | subroutine PGPNTS (N, X, Y, SYMBOL, NS)
      |                                  1
Warning: Unused dummy argument 'symbol' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:859:23:

  859 | subroutine PGPNTS (N, X, Y, SYMBOL, NS)
      |                       1
Warning: Unused dummy argument 'x' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:859:26:

  859 | subroutine PGPNTS (N, X, Y, SYMBOL, NS)
      |                          1
Warning: Unused dummy argument 'y' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:1057:37:

 1057 | subroutine PGQDT(N, TYPE, TLEN, DESCR, DLEN, INTER)
      |                                     1
Warning: Dummy argument 'descr' at (1) was declared INTENT(OUT) but was not set [-Wunused-dummy-argument]
giza-pgplot.f90:1057:43:

 1057 | subroutine PGQDT(N, TYPE, TLEN, DESCR, DLEN, INTER)
      |                                           1
Warning: Dummy argument 'dlen' at (1) was declared INTENT(OUT) but was not set [-Wunused-dummy-argument]
giza-pgplot.f90:1057:50:

 1057 | subroutine PGQDT(N, TYPE, TLEN, DESCR, DLEN, INTER)
      |                                                  1
Warning: Dummy argument 'inter' at (1) was declared INTENT(OUT) but was not set [-Wunused-dummy-argument]
giza-pgplot.f90:1057:18:

 1057 | subroutine PGQDT(N, TYPE, TLEN, DESCR, DLEN, INTER)
      |                  1
Warning: Unused dummy argument 'n' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:1057:30:

 1057 | subroutine PGQDT(N, TYPE, TLEN, DESCR, DLEN, INTER)
      |                              1
Warning: Dummy argument 'tlen' at (1) was declared INTENT(OUT) but was not set [-Wunused-dummy-argument]
giza-pgplot.f90:1057:24:

 1057 | subroutine PGQDT(N, TYPE, TLEN, DESCR, DLEN, INTER)
      |                        1
Warning: Dummy argument 'type' at (1) was declared INTENT(OUT) but was not set [-Wunused-dummy-argument]
giza-pgplot.f90:1157:22:

 1157 | subroutine PGQITF (ITF)
      |                      1
Warning: Dummy argument 'itf' at (1) was declared INTENT(OUT) but was not set [-Wunused-dummy-argument]
giza-pgplot.f90:1471:21:

 1471 | subroutine PGSCRL (DX, DY)
      |                     1
Warning: Unused dummy argument 'dx' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:1471:25:

 1471 | subroutine PGSCRL (DX, DY)
      |                         1
Warning: Unused dummy argument 'dy' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:1481:20:

 1481 | subroutine PGSCRN(CI, NAME, IER)
      |                    1
Warning: Unused dummy argument 'ci' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:1481:31:

 1481 | subroutine PGSCRN(CI, NAME, IER)
      |                               1
Warning: Dummy argument 'ier' at (1) was declared INTENT(OUT) but was not set [-Wunused-dummy-argument]
giza-pgplot.f90:1481:26:

 1481 | subroutine PGSCRN(CI, NAME, IER)
      |                          1
Warning: Unused dummy argument 'name' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:1533:22:

 1533 | subroutine PGSITF (ITF)
      |                      1
Warning: Unused dummy argument 'itf' at (1) [-Wunused-dummy-argument]
giza-pgplot.f90:1546:16:

 1546 |  integer :: ierr
      |                1
Warning: Unused variable 'ierr' declared at (1) [-Wunused-variable]

test-openclose.c: In function 'main':
test-openclose.c:28:7: warning: variable 'ierr' set but not used [-Wunused-but-set-variable]
   28 |   int ierr;
      |       ^~~~

test-vector.c: In function 'main':
test-vector.c:55:28: warning: passing argument 3 of 'giza_vector_float' from incompatible pointer type [-Wincompatible-pointer-types]
   55 |   giza_vector_float (n, m, hori, vert, 0, 1, 0, 1, scale, 0, affine, 1000.);
      |                            ^~~~
      |                            |
      |                            float (*)[n]
In file included from test-vector.c:25:
../../src/giza.h:350:47: note: expected 'const float *' but argument is of type 'float (*)[n]'
  350 | giza_vector_float (int n, int m, const float* horizontal, const float* vertical,
      |                                  ~~~~~~~~~~~~~^~~~~~~~~~
test-vector.c:55:34: warning: passing argument 4 of 'giza_vector_float' from incompatible pointer type [-Wincompatible-pointer-types]
   55 |   giza_vector_float (n, m, hori, vert, 0, 1, 0, 1, scale, 0, affine, 1000.);
      |                                  ^~~~
      |                                  |
      |                                  float (*)[n]
../../src/giza.h:350:72: note: expected 'const float *' but argument is of type 'float (*)[n]'
  350 | giza_vector_float (int n, int m, const float* horizontal, const float* vertical,
      |                                                           ~~~~~~~~~~~~~^~~~~~~~

[danieljprice]

Hi thanks for flagging the issue and sorry for the slow response. Some of these are easily fixed and I would very much welcome a P-R fixing them.

the trickiest ones are the unused dummy arguments, I guess they could be switched off using -Wno-unused-dummy-argument but we cannot change the API to these routines and really this just indicates some unimplemented functionality that should really be implemented...