diff options
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
| -rw-r--r-- | clang/lib/Frontend/CompilerInvocation.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp index e1d9351a..c1ad805 100644 --- a/clang/lib/Frontend/CompilerInvocation.cpp +++ b/clang/lib/Frontend/CompilerInvocation.cpp @@ -2029,8 +2029,12 @@ std::string CompilerInvocation::getModuleHash() const { // running, so mangle the hostname in to the module hash to separate them. char hostname[256]; hostname[0] = 0; - if (gethostname(hostname, 255) == 0) + if (gethostname(hostname, 255) == 0) { + // Forcibly null-terminate the result, since POSIX doesn't require that + // truncation result in an error or that truncated names be null-terminated. + hostname[sizeof(hostname)-1] = 0; code = hash_combine(code, StringRef(hostname)); + } // Ignore failures in gethostname() by not including the hostname in the hash. #endif |