Am 09.04.2015 um 21:59 schrieb Patrick Steinhardt:
The "help-all" option is being initialized with a wrong value.
While being semantically wrong this can also cause a segmentation
fault in gcc on ARMv7 hardfloat platforms with a hardened
toolchain. Fix this by initializing with a NULL value.
Because the pointer is not used it can't exactly be "wrong". The
callback function could call usage_with_options itself using that
pointer, for example. I suspect that's what an earlier version did (I
don't remember).
Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
---
Added missing sign-off and changed initialization with &opts to
initialization with NULL according to Eric's comment as the value
is not being used anyway.
Thanks, it looks good.
builtin/grep.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/builtin/grep.c b/builtin/grep.c
index abc4400..d04f440 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -738,7 +738,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored,
N_("allow calling of grep(1) (ignored by this build)")),
- { OPTION_CALLBACK, 0, "help-all", &options, NULL, N_("show usage"),
+ { OPTION_CALLBACK, 0, "help-all", NULL, NULL, N_("show usage"),
PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
OPT_END()
};
--
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