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Remove PATH_MAX from realpath

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POSIX.1-2008 ensures realpath() give a dynamically allocated buffer if
NULL is passed, which avoids using PATH_MAX, which may be too large to
fit in stack, or even undefined on some systems.
This commit is contained in:
yangfl 2025-03-19 10:36:39 +08:00 • committed by Nikolaj Schlej
parent d61d759db2
commit 22bb757726
1 changed files with 8 additions and 4 deletions
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12
common/filesystem.cpp
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@ -100,10 +100,14 @@ bool changeDirectory(const UString & dir)
} }
UString getAbsPath(const UString & path) { UString getAbsPath(const UString & path) {
char abs[PATH_MAX] = {}; char * abs = realpath(path.toLocal8Bit(), nullptr);
// Last is a non-standard extension for non-existent files // Last is a non-standard extension for non-existent files
if (realpath(path.toLocal8Bit(), abs) || abs[0] != '\0') UString new_path;
return UString(abs); if (abs)
return path; new_path = UString(abs);
else
new_path = path;
free(abs);
return new_path;
} }
#endif #endif