Add GCC-style 'const' attribute to functions that can use it.

[bpt/emacs.git] / src / mem-limits.h

diff --git a/src/mem-limits.h b/src/mem-limits.h
index 01b0e6e..dbe58dc 100644 (file)
--- a/src/mem-limits.h
+++ b/src/mem-limits.h
@@ -33,7 +33,7 @@ extern int etext;
 # endif
 #endif
 
-extern char *start_of_data (void);
+extern char *start_of_data (void) ATTRIBUTE_CONST;
 #if USE_LSB_TAG || UINTPTR_MAX <= VAL_MAX
 #define EXCEEDS_LISP_PTR(ptr) 0
 #elif defined DATA_SEG_BITS