From: Pino Toscano <toscano.pino@tiscali.it>
Date: Tue, 26 Jan 2021 17:17:11 +0000 (+0000)
Subject: Avoid unconditional PATH_MAX usage
X-Git-Tag: archive/raspbian/5.15.2+dfsg-3+rpi1^2~3
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=cece603de441e4aacc29a90bca3a376dc0354575;p=qtbase-opensource-src.git

Avoid unconditional PATH_MAX usage

Forwarded: no
Last-Update: 2020-04-19

Use a "safe" size in case PATH_MAX is not defined; in the end, this should not
be used, as a allocating realpath() will be used instead.

Gbp-Pq: Name path_max.diff
---

diff --git a/src/corelib/io/qfilesystemengine_unix.cpp b/src/corelib/io/qfilesystemengine_unix.cpp
index 3cbf0324e..243217146 100644
--- a/src/corelib/io/qfilesystemengine_unix.cpp
+++ b/src/corelib/io/qfilesystemengine_unix.cpp
@@ -689,7 +689,11 @@ QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry,
     Q_UNUSED(data);
     return QFileSystemEntry(slowCanonicalized(absoluteName(entry).filePath()));
 #else
+#ifdef PATH_MAX
     char stack_result[PATH_MAX+1];
+#else
+    char stack_result[4096+1];
+#endif
     char *resolved_name = nullptr;
 # if defined(Q_OS_DARWIN) || defined(Q_OS_ANDROID)
     // On some Android and macOS versions, realpath() will return a path even if