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I see these warnings only with Cray compilers. Maybe it is a false positive.
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<div class="">Hong</div>
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<div class="">On Jun 5, 2017, at 11:39 AM, Matthew Knepley <<a href="mailto:knepley@gmail.com" class="">knepley@gmail.com</a>> wrote:</div>
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<div class="gmail_quote">On Mon, Jun 5, 2017 at 11:29 AM, Zhang, Hong <span dir="ltr" class="">
<<a href="mailto:hongzhang@anl.gov" target="_blank" class="">hongzhang@anl.gov</a>></span> wrote:<br class="">
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The first one looks like a bug.<br class="">
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CC-128 craycc: WARNING File = /global/u2/h/hongzh/Project/<wbr class="">petsc/src/dm/impls/plex/<wbr class="">plextree.c, Line = 3149<br class="">
  The indicated loop is not reachable from preceding code.<br class="">
          SETERRQ(PETSC_COMM_SELF,PETSC_<wbr class="">ERR_SUP,"Unsupported discretization object");CHKERRQ(ierr);<br class="">
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<div class="">Please describe why it looks like a bug:</div>
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<div class="">      if (classId == PETSCFE_CLASSID) {</div>
<div class="">        ierr = PetscFEGetDualSpace((PetscFE)disc,&dsp);CHKERRQ(ierr);</div>
<div class="">      }</div>
<div class="">      else if (classId == PETSCFV_CLASSID) {</div>
<div class="">        ierr = PetscFVGetDualSpace((PetscFV)disc,&dsp);CHKERRQ(ierr);</div>
<div class="">      }</div>
<div class="">      else {</div>
<div class="">        SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Unsupported discretization object");CHKERRQ(ierr);</div>
<div class="">      }</div>
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<div class="">  Thanks,</div>
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<div class="">    Matt</div>
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ftn-1279 crayftn: WARNING TSADAPTEQUALS, File = ../../../global/u2/h/hongzh/<wbr class="">Project/petsc/src/ts/f90-mod/<wbr class="">petsctsmod.F, Line = 66, Column = 32<br class="">
  Procedure "TSADAPTEQUALS" is defined at line 32 (/global/u2/h/hongzh/Project/<wbr class="">petsc/src/ts/f90-mod/<wbr class="">petsctsmod.F).  The type of this argument does not agree with dummy argument "A".<br class="">
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ftn-1279 crayftn: WARNING TSADAPTEQUALS, File = ../../../global/u2/h/hongzh/<wbr class="">Project/petsc/src/ts/f90-mod/<wbr class="">petsctsmod.F, Line = 66, Column = 34<br class="">
  Procedure "TSADAPTEQUALS" is defined at line 32 (/global/u2/h/hongzh/Project/<wbr class="">petsc/src/ts/f90-mod/<wbr class="">petsctsmod.F).  The type of this argument does not agree with dummy argument "B".<br class="">
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Hong (Mr.)</blockquote>
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-- <br class="">
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<div class="">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br class="">
-- Norbert Wiener</div>
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<div class=""><a href="http://www.caam.rice.edu/~mk51/" target="_blank" class="">http://www.caam.rice.edu/~mk51/</a><br class="">
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