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Avoid a possible infinite recursion in options parsing.

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See microsoft/mimalloc#502, second issue, for a scenario where this occurs.
This commit is contained in:
Frank Richter
2021-12-19 15:46:46 +01:00
parent 8965503740
commit d877dc8f32
1 changed files with 4 additions and 1 deletions
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src/options.c
+4 -1
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@@ -532,8 +532,11 @@ static void mi_option_init(mi_option_desc_t* desc) {
desc->init = INITIALIZED;
}
else {
_mi_warning_message("environment option mimalloc_%s has an invalid value: %s\n", desc->name, buf);
/* _mi_warning_message() will itself call mi_option_get() for some options,
* so to avoid a possible infinite recursion it's important to mark the option as
* "initialized" first */
desc->init = DEFAULTED;
_mi_warning_message("environment option mimalloc_%s has an invalid value: %s\n", desc->name, buf);
}
}
mi_assert_internal(desc->init != UNINIT);