[LLVMbugs] [Bug 15327] New: clang warns of unused argument '--param ssp-buffer-size=1' when linking but not compiling

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15327

            Bug ID: 15327
           Summary: clang warns of unused argument '--param
                    ssp-buffer-size=1' when linking but not compiling
           Product: clang
           Version: 3.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: andersk at mit.edu
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

$ clang --param ssp-buffer-size=1 foo.c
$ clang --param ssp-buffer-size=1 -c foo.c
$ clang --param ssp-buffer-size=1 foo.o
clang: warning: argument unused during compilation: '--param ssp-buffer-size=1'

This inconsistency confuses a mosh (https://github.com/keithw/mosh) autoconf
test into thinking the flag is supported, leading to warnings (or with -Werror,
errors) emitted later in a build.

A followup to http://llvm.org/bugs/show_bug.cgi?id=9673 .

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