libs/wpp/ppl.l: Check return value of fwrite to prevent gcc warnings. exit(1) if fwrite fails. (bug # 16413)

[titon barua]

---
 libs/wpp/ppl.l |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/libs/wpp/ppl.l b/libs/wpp/ppl.l
index e71bf6e..ab2efe6 100644
--- a/libs/wpp/ppl.l
+++ b/libs/wpp/ppl.l
@@ -1440,8 +1440,12 @@ static void put_buffer(const char *s, int len)
 {
 	if(top_macro())
 		add_text_to_macro(s, len);
-	else
-           fwrite(s, 1, len, ppy_out);
+	else if (fwrite(s, 1, len, ppy_out) != len)
+  {
+    /* exit if fwrite fails */
+    perror ("fwrite failed");
+    exit (1);
+  }
 }
 

-- 
1.5.6.3
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