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  1. Embedded Software & Tools
  2. EXT_EP-10950

Compiler inconsistently handles multiple definitions of a global variable in different files with and without link time optimization

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Low Low

      The attached files each contain this variable definition ...

      void *global_handle;

      Build it with no optimization ...

      % armcl -mv7m4 -mt -me f1.c f2.c -z -o f.out
[f1.c]
[f2.c]
<Linking>

      ... a clean build results. Build it with link time optimization ...

      % armcl -mv7m4 -mt -me -o4 f1.c f2.c -z -o f.out
[f1.c]
[f2.c]
<Linking>
error: symbol "global_handle" has already been defined

>> Compilation failure

>> Compilation failure
fatal error: Failed linktime optimization

>> Compilation failure

      ... errors are emitted.

            syncuser TI User
            syncuser TI User
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              Created:
              Updated: