Fix win32setlocale.c const-related warnings.

Back-patch to 9.2, like commit db29620d4d16e08241f965ccd70d0f65883ff0de.

diff --git a/src/port/win32setlocale.c b/src/port/win32setlocale.c
index ee48e4613ad759388bfc6e8297e8096cc6432fda..11c02a1e039fa098747218bf85d5574a9b9ec44c 100644 (file)
--- a/src/port/win32setlocale.c
+++ b/src/port/win32setlocale.c
@@ -103,8 +103,8 @@ static const struct locale_map locale_map_result[] = {
 
 #define MAX_LOCALE_NAME_LEN        100
 
-static char *
-map_locale(struct locale_map *map, char *locale)
+static const char *
+map_locale(const struct locale_map *map, const char *locale)
 {
    static char aliasbuf[MAX_LOCALE_NAME_LEN];
    int         i;
@@ -167,7 +167,7 @@ map_locale(struct locale_map *map, char *locale)
 char *
 pgwin32_setlocale(int category, const char *locale)
 {
-   char       *argument;
+   const char *argument;
    char       *result;
 
    if (locale == NULL)
@@ -178,8 +178,12 @@ pgwin32_setlocale(int category, const char *locale)
    /* Call the real setlocale() function */
    result = setlocale(category, argument);
 
+   /*
+    * setlocale() is specified to return a "char *" that the caller is
+    * forbidden to modify, so casting away the "const" is innocuous.
+    */
    if (result)
-       result = map_locale(locale_map_result, result);
+       result = (char *) map_locale(locale_map_result, result);
 
    return result;
 }