>From 4a09a0da31e9b98167e974e05f13f57b53dd41c3 Mon Sep 17 00:00:00 2001 From: Alexey Samsonov <samsonov@xxxxxxxxxx> Date: Wed, 2 Apr 2014 12:26:44 +0400 Subject: [PATCH] getline.3: Emphasize that user code should free the allocated buffer even if getline() failed. --- man3/getline.3 | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/man3/getline.3 b/man3/getline.3 index 806e455..9f403a0 100644 --- a/man3/getline.3 +++ b/man3/getline.3 @@ -69,8 +69,11 @@ is set to NULL and .I *n is set 0 before the call, then .BR getline () -will allocate a buffer for storing the line, -which should be freed by the user program. +will allocate a buffer for storing the line. +This buffer should be freed by the user program +even if +.BR getline () +failed. Alternatively, before calling .BR getline (), -- 1.9.1.423.g4596e3a Relevant discussion in glibc bugzilla: https://sourceware.org/bugzilla/show_bug.cgi?id=5666 test program: $ cat tmp/getline/a.cc #include <stdio.h> int main() { for (int x = 0; x < 2; x++) { char *lineptr = 0; size_t size = 0; int res = getline(&lineptr, &size, stdin); printf("%d\n%p\n", res, lineptr); } return 0; } $ gcc tmp/getline/a.cc && echo -n "xxx" > tmp/getline/input && ./a.out < tmp/getline/input 3 0x11ae010 -1 0x11ae090 -- Alexey Samsonov, MSK -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
