From 3427fe59c2d76ddbf4b23908c6ae5272734c7c8b Mon Sep 17 00:00:00 2001 From: "Barton E. Schaefer" Date: Wed, 20 May 2015 10:14:04 -0700 Subject: [PATCH] 35231: make mkevnstr() safe for NULL value Upstream-commit: af957f2ed6287f66953742fbca69188cecb98fbf Signed-off-by: Kamil Dudka --- Src/params.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/Src/params.c b/Src/params.c index 61edc5d..d0ce0a9 100644 --- a/Src/params.c +++ b/Src/params.c @@ -4534,17 +4534,21 @@ addenv(Param pm, char *value) static char * mkenvstr(char *name, char *value, int flags) { - char *str, *s; - int len_name, len_value; + char *str, *s = value; + int len_name, len_value = 0; len_name = strlen(name); - for (len_value = 0, s = value; - *s && (*s++ != Meta || *s++ != 32); len_value++); + if (s) + while (*s && (*s++ != Meta || *s++ != 32)) + len_value++; s = str = (char *) zalloc(len_name + len_value + 2); strcpy(s, name); s += len_name; *s = '='; - copyenvstr(s, value, flags); + if (value) + copyenvstr(s, value, flags); + else + *++s = '\0'; return str; } -- 2.4.1