From 46c9280aff29964db33a8a6c778618af9270e3b2 Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fl.fischer@fau.de>
Date: Thu, 22 Aug 2019 20:00:11 +0200
Subject: read output file path from CHATTYMALLOC_FILE environment variable

---
 src/chattymalloc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/chattymalloc.c')

diff --git a/src/chattymalloc.c b/src/chattymalloc.c
index 679f68f..8614a27 100644
--- a/src/chattymalloc.c
+++ b/src/chattymalloc.c
@@ -53,7 +53,11 @@ write_output(const char* fmt, ...)
 static void __attribute__((constructor))
 init()
 {
-  out = open("chattymalloc.txt",
+  char* fname = getenv("CHATTYMALLOC_FILE");
+  if (fname == NULL)
+    fname = "chattymalloc.txt";
+
+  out = open(fname,
              O_WRONLY | O_TRUNC | O_CREAT,
              S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
   if (out == -1) {
-- 
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