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From: =?UTF-8?q?Beno=C3=AEt=20Burnichon?= <benoit.burnichon@airtag.com>
Date: Tue, 6 Dec 2011 14:23:53 +0100
Subject: [PATCH] io.read("*n", "*n") may return garbage if second read fails.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Comes from http://www.lua.org/bugs.html#5.1.4-8
reported by Roberto on 12 Apr 2010.
Example:
--
print(io.read("*n", "*n")) --<< enter "10 hi"
--> file (0x884420) nil
--
Signed-off-by: Benoît Burnichon <benoit.burnichon@airtag.com>
---
src/liolib.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/src/liolib.c b/src/liolib.c
index e79ed1c..8de2547 100644
--- a/src/liolib.c
+++ b/src/liolib.c
@@ -276,7 +276,10 @@ static int read_number (lua_State *L, FILE *f) {
lua_pushnumber(L, d);
return 1;
}
- else return 0; /* read fails */
+ else {
+ lua_pushnil(L); /* "result" to be removed */
+ return 0; /* read fails */
+ }
}
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