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-rw-r--r--gcc/cpplib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/cpplib.c b/gcc/cpplib.c
index 7904659..32b70e6 100644
--- a/gcc/cpplib.c
+++ b/gcc/cpplib.c
@@ -1410,7 +1410,7 @@ do_define (pfile, keyword)
else if (hp->type == T_MACRO)
ok = ! compare_defs (pfile, mdef.defn, hp->value.defn);
/* Redefining a constant is ok with -D. */
- else if (hp->type == T_CONST)
+ else if (hp->type == T_CONST || hp->type == T_STDC)
ok = ! CPP_OPTIONS (pfile)->done_initializing;
/* Print the warning if it's not ok. */
if (!ok)