28 lines
919 B
Diff
28 lines
919 B
Diff
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From 4673c2eaba443678c4dc6ae74ea16a489b415fed Mon Sep 17 00:00:00 2001
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From: liyunfei <liyunfei33@huawei.com>
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Date: Tue, 19 Sep 2023 09:31:43 +0800
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Subject: [PATCH] Prevent environment variables from exceeding NAME_MAX
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---
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llvm/lib/Support/Unix/Path.inc | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc
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index 2ae7c6dc..f13f3165 100644
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--- a/llvm/lib/Support/Unix/Path.inc
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+++ b/llvm/lib/Support/Unix/Path.inc
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@@ -1427,8 +1427,12 @@ static const char *getEnvTempDir() {
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// variable.
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const char *EnvironmentVariables[] = {"TMPDIR", "TMP", "TEMP", "TEMPDIR"};
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for (const char *Env : EnvironmentVariables) {
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- if (const char *Dir = std::getenv(Env))
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+ if (const char *Dir = std::getenv(Env)) {
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+ if(std::strlen(Dir) > NAME_MAX) {
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+ continue;
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+ }
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return Dir;
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+ }
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}
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return nullptr;
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--
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