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Posted to commits@daffodil.apache.org by "John Interrante (Jira)" <ji...@apache.org> on 2021/11/03 18:39:00 UTC

[jira] [Created] (DAFFODIL-2578) Raise minimum C level to ISO C11 with GNU extensions

John Interrante created DAFFODIL-2578:
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             Summary: Raise minimum C level to ISO C11 with GNU extensions
                 Key: DAFFODIL-2578
                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2578
             Project: Daffodil
          Issue Type: Bug
          Components: Back End C-Generator
            Reporter: John Interrante
            Assignee: John Interrante


Fix pedantic warning "ISO C99 doesn't support unnamed structs/unions" found when compiling nested.dfdl.xsd's NestedUnion example with current Makefile's CFLAGS. Verify that both gcc and clang support "-std=gnu11" all the way back to gcc-4 and clang-3 on CentOS 7. Raise runtime2's minimum C language support level to ISO C11 with GNU extensions and make all the places where Daffodil calls the C compiler pass "-std=gnu11" to the C compiler to compile code with the same minimum C level. ISO C11 also allows "for (" loops to define loop variables in place so we can make that change too.



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