On 14-June-2022 06:43, Bram Moolenaar wrote:
Patch 8.2.5084
Problem:    When the GUI shows a dialog tests get stuck.
Solution:   Add the --gui-dialog-file argument.
Files:      runtime/doc/starting.txt, src/Make_mvc.mak, src/gui.c, src/main.c,
             src/message.c, src/os_mswin.c, src/proto/gui.pro,
             src/proto/main.pro, src/structs.h, src/testdir/Make_dos.mak,
             src/testdir/Make_ming.mak, src/testdir/Makefile,
             src/testdir/runtest.vim, src/testdir/shared.vim


After this patch mingw64 (gcc 12.1) spits out this warning:
<snip>
gcc -c -I. -Iproto -DWIN32 -DWINVER=0x0603 -D_WIN32_WINNT=0x0603 -DHAVE_PATHDEF -DFEAT_NORMAL -DHAVE_STDINT_H -D__USE_MINGW_ANSI_STDIO -pipe -march=native -Wall -O3 -fomit-frame-pointer -freg-struct-return -fpie -fPIE -DFEAT_GUI_MSWIN -DFEAT_CLIPBOARD os_mswin.c -o gobjnative/os_mswin.oos_mswin.c: In function 'display_errors':

os_mswin.c:681:61: warning: pointer targets in passing argument 2 of 'gui_dialog_log' differ in signedness [-Wpointer-sign]
  681 |                     if (!gui_dialog_log((char_u *)"Errors", p))
      | ^
      | |
      | char *
In file included from proto.h:278,
                 from vim.h:2255,
                 from os_mswin.c:16:
proto/gui.pro:70:43: note: expected 'char_u *' {aka 'unsigned char *'} but argument is of type 'char *'
   70 | int gui_dialog_log(char_u *title, char_u *message);
      |                                   ~~~~~~~~^~~~~~~
</snip>

The attached patch tries to fix it.

Cheers
John

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--- os_mswin.c.orig     2022-06-14 06:49:16.421594200 +1000
+++ os_mswin.c  2022-06-14 07:02:23.343442700 +1000
@@ -664,7 +664,7 @@
 display_errors(void)
 {
 # ifdef FEAT_GUI
-    char *p;
+    char_u *p;
 
 #  ifdef VIMDLL
     if (gui.in_use || gui.starting)
@@ -673,7 +673,7 @@
        if (error_ga.ga_data != NULL)
        {
            // avoid putting up a message box with blanks only
-           for (p = (char *)error_ga.ga_data; *p; ++p)
+           for (p = (char_u *)error_ga.ga_data; *p; ++p)
                if (!isspace(*p))
                {
                    // Only use a dialog when not using --gui-dialog-file:

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