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preproc: pp_cleanup -- Don't forget to zeroify variables

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Once we free allocated memory don't forget to setup variables
to NULL, otherwise they are pointing into nonexisting memory,
which might lead into sigsegv in best case.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov 2014-06-28 10:17:39 +04:00
parent c31767c5cb
commit dae24d7504
1 changed files with 3 additions and 0 deletions
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3
preproc.c
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@ -1184,6 +1184,7 @@ static void delete_Blocks(void)
if (a != &blocks)
nasm_free(a);
}
memset(&blocks, 0, sizeof(blocks));
}
/*
@ -5141,7 +5142,9 @@ static void pp_cleanup(int pass)
if (pass == 0) {
IncPath *i;
free_llist(predef);
predef = NULL;
delete_Blocks();
freeTokens = NULL;
while ((i = ipath)) {
ipath = i->next;
if (i->path)