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Fix comparison that's always true

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... because base_dir[0] and dest_dir[0] are *signed* chars.
(Backport from FLTK 1.5)
This commit is contained in:
Matthias Melcher
2025-04-17 15:28:16 +02:00
parent 80ec48e95e
commit a7c4b4eb7d
1 changed files with 2 additions and 2 deletions
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src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx
+2 -2
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@@ -612,8 +612,8 @@ Fl_WinAPI_System_Driver::filename_relative(char *to, // O - Relative filename
}
// if there is a drive letter, make sure both paths use the same drive
if ( base_dir[0] < 128 && isalpha(base_dir[0]) && base_dir[1] == ':'
&& dest_dir[0] < 128 && isalpha(dest_dir[0]) && dest_dir[1] == ':') {
if ( (unsigned)base_dir[0] < 128 && isalpha(base_dir[0]) && base_dir[1] == ':'
&& (unsigned)dest_dir[0] < 128 && isalpha(dest_dir[0]) && dest_dir[1] == ':') {
if (tolower(base_dir[0]) != tolower(dest_dir[0])) {
strlcpy(to, dest_dir, tolen);
return 0;