http://llvm.org/bugs/show_bug.cgi?id=5635
Summary: Bad handling of realpath
Product: libraries
Version: trunk
Platform: PC
OS/Version: NetBSD
Status: NEW
Severity: normal
Priority: P2
Component: System Library
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
System/Unix/Path.inc contains the following code:
return Path(std::string(realpath(DLInfo.dli_fname, link_path)));
realpath can fail returning a NULL pointer, as clearly documented in the man
page, and clang then segfaults as it's constructing a std::string from a NULL
pointer.
On my system (NetBSD) this happens when invoking clang through a symlink.
$ clang /tmp/bug.c
terminate called after throwing an instance of 'std::logic_error'
what(): basic_string::_S_construct NULL not valid
Stack dump:
0. Program arguments: clang /tmp/bug.c
Abort trap
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