[LLVMbugs] [Bug 15339] New: -Wpadded does not emit warning when struct is unused

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sat Feb 23 05:03:32 PST 2013


            Bug ID: 15339
           Summary: -Wpadded does not emit warning when struct is unused
           Product: clang
           Version: 3.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: 1zeeky at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10058
  --> http://llvm.org/bugs/attachment.cgi?id=10058&action=edit

When a struct is defined, needs to be padded but is not instantiated, clang
will not emit a warning.

Compile the attached testcase with -Wpadded; No warning will be shown.
Uncomment line 10 (struct instantiation), now the warning will show.

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