trace2: handle NULL values in tr2_sysenv config callback
If you have config with an implicit bool like: [trace2] envvars we'll segfault, as we unconditionally try to xstrdup() the value. We should instead detect and complain, as a boolean value has no meaning here. The same is true for every variable in tr2_sysenv_settings (and this patch covers them all, as we check them in a loop). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King committed
Dec 7, 2023 at 02:11 UTC
24942ef31636f5e1f8076454200be76db8740848
1 file changed
+2
trace2/tr2_sysenv.c
+2
index d3ecac2772..048cdd5438 100644
--- a/trace2/tr2_sysenv.c
+++ b/trace2/tr2_sysenv.c
@@ -68,6 +68,8 @@ static int tr2_sysenv_cb(const char *key, const char *value,
for (k = 0; k < ARRAY_SIZE(tr2_sysenv_settings); k++) {
if (!strcmp(key, tr2_sysenv_settings[k].git_config_name)) {
+ if (!value)
+ return config_error_nonbool(key);
free(tr2_sysenv_settings[k].value);
tr2_sysenv_settings[k].value = xstrdup(value);
return 0;