From 5212941c550ef9377ed59f182f5846345da74b9b Mon Sep 17 00:00:00 2001
From: DKRZ-Xingran <wang@dkrz.de>
Date: Mon, 28 Feb 2022 16:13:59 +0100
Subject: [PATCH] fix: do not malloc zero byte for zaxis
---
src/zaxis.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/zaxis.c b/src/zaxis.c
index 3fa358075..a1fbc3862 100644
--- a/src/zaxis.c
+++ b/src/zaxis.c
@@ -760,7 +760,7 @@ void zaxisDefLevels(int zaxisID, const double *levels)
if ( levels )
{
- if ( zaxisptr->vals == NULL )
+ if ( zaxisptr->vals == NULL && size != (size_t) 0 )
zaxisptr->vals = (double*) Malloc(size*sizeof(double));
double *vals = zaxisptr->vals;
@@ -792,7 +792,7 @@ void zaxisDefLevel(int zaxisID, int levelID, double level)
zaxis_t *zaxisptr = zaxis_to_pointer(zaxisID);
int size = zaxisptr->size;
- if ( zaxisptr->vals == NULL )
+ if ( zaxisptr->vals == NULL && size != 0 )
zaxisptr->vals = (double*) Malloc((size_t)size*sizeof(double));
if ( levelID >= 0 && levelID < size )
--
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