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-rw-r--r--src/alloca.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/alloca.c b/src/alloca.c
index 12c1122981c..31fb4e0d4e0 100644
--- a/src/alloca.c
+++ b/src/alloca.c
@@ -73,7 +73,9 @@ typedef void *pointer;
73typedef char *pointer; 73typedef char *pointer;
74#endif 74#endif
75 75
76#ifndef NULL
76#define NULL 0 77#define NULL 0
78#endif
77 79
78/* Different portions of Emacs need to call different versions of 80/* Different portions of Emacs need to call different versions of
79 malloc. The Emacs executable needs alloca to call xmalloc, because 81 malloc. The Emacs executable needs alloca to call xmalloc, because