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Fix potential buffer overrun whilst scanning macro strings.

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PR 24010
	* macro.c (get_any_string): Check for end of input whilst scanning
	for separators.
This commit is contained in:
Wu Heng 2019-01-04 16:18:59 +00:00 committed by Nick Clifton
parent bdfb445597
commit 1b2ed39c3a
2 changed files with 7 additions and 1 deletions
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6
gas/ChangeLog
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@ -1,3 +1,9 @@
2019-01-04 Wu Heng <wu.heng@zte.com.cn>
PR 24010
* macro.c (get_any_string): Check for end of input whilst scanning
for separators.
2019-01-04 Wu Heng <wu.heng@zte.com.cn>
PR 24009

2
gas/macro.c
View File

@ -369,7 +369,7 @@ get_any_string (size_t idx, sb *in, sb *out)
{
if (in->len > idx + 2 && in->ptr[idx + 1] == '\'' && ISBASE (in->ptr[idx]))
{
while (!ISSEP (in->ptr[idx]))
while (idx < in->len && !ISSEP (in->ptr[idx]))
sb_add_char (out, in->ptr[idx++]);
}
else if (in->ptr[idx] == '%' && macro_alternate)