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Subject: [Bug fortran/55207] Automatic deallocation of variables declared in the main program
Date: Mon, 05 Nov 2012 17:45:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55207

--- Comment #6 from janus at gcc dot gnu.org 2012-11-05 17:45:23 UTC ---
Created attachment 28620
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28620
patch

Here is an extended patch, based on comment 3, which fixes the storage_size_3
wrong-code problem (cf. gfc_trans_deferred_vars) and corrects the
__builtin_free counts in the test cases.

It still fails on the following:

FAIL: gfortran.dg/c_ptr_tests_16.f90  -O   scan-tree-dump-times optimized
"i_do_not_exist" 0
FAIL: gfortran.dg/coarray_lib_alloc_2.f90  -O   scan-tree-dump-times original
"_gfortran_caf_deregister .&xx._data.token, 0B, 0B, 0.;" 1
FAIL: gfortran.dg/intent_optimize_1.f90  -O   scan-tree-dump-times optimized
"does_not_exist" 0
FAIL: gfortran.dg/volatile4.f90  -O   scan-tree-dump-not optimized
"NonVolatileNotOptimizedAway"
FAIL: gfortran.dg/volatile6.f90  -O   scan-tree-dump-not optimized
"NonVolatileNotOptimizedAway1"

Except for one coarray issue, those seem to be problems with optimizing away
stuff in certain situations (I haven't checked any details yet).