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examples: Fix memory leaks from realloc errors

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Make sure to not overwrite the reallocated pointer in realloc() calls
to avoid a memleak on memory errors.
This commit is contained in:
Kruzya 2018-09-15 08:55:11 +03:00 • committed by Daniel Gustafsson
parent 927cb3708e
commit 23524bf85b
5 changed files with 29 additions and 12 deletions
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7
docs/examples/getinmemory.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -42,13 +42,14 @@ WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)
size_t realsize = size * nmemb;
struct MemoryStruct *mem = (struct MemoryStruct *)userp;
mem->memory = realloc(mem->memory, mem->size + realsize + 1);
if(mem->memory == NULL) {
char *ptr = realloc(mem->memory, mem->size + realsize + 1);
if(ptr == NULL) {
/* out of memory! */
printf("not enough memory (realloc returned NULL)\n");
return 0;
}
mem->memory = ptr;
memcpy(&(mem->memory[mem->size]), contents, realsize);
mem->size += realsize;
mem->memory[mem->size] = 0;