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linux-user: Fix possible realloc memory leak 

Extract from "man realloc":
"If realloc() fails the original block is left untouched;
it is not freed or moved."

Fix a possible memory leak (reported by cppcheck).

Cc: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
(cherry picked from commit 8d79de6e42)
This commit is contained in:
Stefan Weil 2011-01-17 21:36:06 +01:00 committed by Aurelien Jarno
parent 23e4cff984
commit b03088c32f
1 changed files with 5 additions and 3 deletions
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8
linux-user/elfload.c
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@ -1481,7 +1481,7 @@ static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias)
struct elf_shdr *shdr;
char *strings;
struct syminfo *s;
struct elf_sym *syms;
struct elf_sym *syms, *new_syms;
shnum = hdr->e_shnum;
i = shnum * sizeof(struct elf_shdr);
@ -1550,12 +1550,14 @@ static void load_symbols(struct elfhdr *hdr, int fd, abi_ulong load_bias)
that we threw away. Whether or not this has any effect on the
memory allocation depends on the malloc implementation and how
many symbols we managed to discard. */
syms = realloc(syms, nsyms * sizeof(*syms));
if (syms == NULL) {
new_syms = realloc(syms, nsyms * sizeof(*syms));
if (new_syms == NULL) {
free(s);
free(syms);
free(strings);
return;
}
syms = new_syms;
qsort(syms, nsyms, sizeof(*syms), symcmp);