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-rw-r--r--src/include/port.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/port.h b/src/include/port.h
index b81fa4a89eb..8a63958535b 100644
--- a/src/include/port.h
+++ b/src/include/port.h
@@ -251,7 +251,7 @@ extern int pgunlink(const char *path);
#if defined(WIN32) && !defined(__CYGWIN__)
extern int pgsymlink(const char *oldpath, const char *newpath);
extern int pgreadlink(const char *path, char *buf, size_t size);
-extern bool pgwin32_is_junction(char *path);
+extern bool pgwin32_is_junction(const char *path);
#define symlink(oldpath, newpath) pgsymlink(oldpath, newpath)
#define readlink(path, buf, size) pgreadlink(path, buf, size)