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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/xmlstream.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2017, 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
@ -69,14 +69,15 @@ static void characterDataHandler(void *userData, const XML_Char *s, int len)
struct ParserStruct *state = (struct ParserStruct *) userData;
struct MemoryStruct *mem = &state->characters;
mem->memory = realloc(mem->memory, mem->size + len + 1);
if(mem->memory == NULL) {
char *ptr = realloc(mem->memory, mem->size + len + 1);
if(!ptr) {
/* Out of memory. */
fprintf(stderr, "Not enough memory (realloc returned NULL).\n");
state->ok = 0;
return;
}
mem->memory = ptr;
memcpy(&(mem->memory[mem->size]), s, len);
mem->size += len;
mem->memory[mem->size] = 0;