On 17-Jan-2023 05:19, Bram Moolenaar wrote:
Patch 9.0.1208
Problem:    Code is indented more than necessary.
Solution:   Use an early return where it makes sense. (Yegappan Lakshmanan,
             closes #11819)
Files:      src/netbeans.c, src/normal.c, src/ops.c, src/option.c,
             src/optionstr.c, src/os_amiga.c, src/os_mac_conv.c,
             src/os_mswin.c, src/os_qnx.c, src/os_unix.c, src/os_win32.c



After this patch, msys64 (clang 15.0.5) gives this error:
<snip>
clang -c -I. -Iproto -DWIN32 -DWINVER=0x0603 -D_WIN32_WINNT=0x0603 -DHAVE_PATHDEF -DFEAT_NORMAL -DHAVE_STDINT_H -D__USE_MINGW_ANSI_STDIO -pipe -Wall -O3 -fomit-frame-pointer -fpie -fPIE -DFEAT_GUI_MSWIN -DFEAT_CLIPBOARD os_mswin.c -o gobjx86-64/os_mswin.o
os_mswin.c:1574:5: error: expected expression
    DWORD err = CommDlgExtendedError();
    ^
os_mswin.c:1576:9: error: use of undeclared identifier 'err'; did you mean 'erf'?
    if (err)
        ^~~
        erf
D:/msys64/ucrt64/include/math.h:900:25: note: 'erf' declared here
  extern double __cdecl erf (double);
                        ^
os_mswin.c:1585:9: error: use of undeclared identifier 'err'; did you mean 'erf'?
                NULL, err, 0, (LPTSTR)(&buf), 0, NULL);
                      ^~~
                      erf
D:/msys64/ucrt64/include/math.h:900:25: note: 'erf' declared here
  extern double __cdecl erf (double);
                        ^
3 errors generated.
make: *** [Make_cyg_ming.mak:1206: gobjx86-64/os_mswin.o] Error 1
</snip>

The attach patch tries to fix it.

Cheers
John

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--- os_mswin.c.orig     2023-01-17 05:56:58.987408500 +1100
+++ os_mswin.c  2023-01-17 06:04:55.972839800 +1100
@@ -1390,6 +1390,8 @@
     DEVNAMES           *devname;
     int                        i;
 
+    DWORD              err;
+
     bUserAbort = &(psettings->user_abort);
     CLEAR_FIELD(prt_dlg);
     prt_dlg.lStructSize = sizeof(PRINTDLGW);
@@ -1571,7 +1573,7 @@
     return TRUE;
 
 init_fail_dlg:
-    DWORD err = CommDlgExtendedError();
+    err = CommDlgExtendedError();
 
     if (err)
     {

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