https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68358
Bug ID: 68358
Summary: Some tests in gfortran.dg fail when compiled with '-g
-flto' and Xcode 7
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
CC: fxcoudert at gcc dot gnu.org, hubicka at gcc dot gnu.org,
iains at gcc dot gnu.org, mliska at suse dot cz
Target Milestone: ---
Host: x86_64-apple-darwin14
Target: x86_64-apple-darwin14
Build: x86_64-apple-darwin14
The following tests fail when compiled with '-g -flto' and Xcode 7
FAIL: gfortran.dg/alloc_comp_deep_copy_1.f03 -g -flto (test for excess
errors)
FAIL: gfortran.dg/allocate_deferred_char_scalar_1.f03 -g -flto (test for
excess errors)
FAIL: gfortran.dg/allocate_with_source_8.f08 -g -flto (test for excess
errors)
FAIL: gfortran.dg/assumed_rank_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_48.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_optional_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_to_type_1.f03 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_to_type_4.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/defined_assignment_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/finalize_12.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/finalize_15.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/inline_transpose_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/intrinsic_spread_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/maxlocval_4.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minlocval_3.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minlocval_4.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minmaxloc_3.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/namelist_69.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/namelist_70.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/realloc_on_assign_17.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/typebound_operator_9.f03 -g -flto (test for excess errors)
FAIL: gfortran.dg/unlimited_polymorphic_1.f03 -g -flto (test for excess
errors)
FAIL: gfortran.dg/vector_subscript_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/widechar_intrinsics_10.f90 -g -flto (test for excess
errors)
FAIL: gfortran.dg/widechar_intrinsics_5.f90 -g -flto (test for excess
errors)
FAIL: gfortran.dg/zero_sized_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/g77/f90-intrinsic-bit.f -g -flto (test for excess errors)
FAIL: gfortran.dg/ieee/large_3.F90 -g -flto (test for excess errors)
plus with -m32 (not with -m64)
FAIL: gfortran.dg/achar_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/allocate_with_source_5.f90 -g -flto (test for excess
errors)
FAIL: gfortran.dg/maxlocval_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minlocval_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minmaxloc_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/ieee/ieee_1.F90 -g -flto (test for excess errors)
plus with -m64 (not with -m32)
FAIL: gfortran.dg/bound_7.f90 -g -flto (test for excess errors)
These failures are of the kind
warning: (i386) could not find object file symbol for symbol
___x86.get_pc_thunk.ax
for gfortran.dg/achar_2.f90, maxlocval_2.f90, minlocval_1.f90 or more complex
as in
[Book15] f90/bug% gfc
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/allocate_with_source_5.f90 -g -flto
-m32
warning: (i386) could not find object file symbol for symbol
___selectors_MOD___final_selectors_Selector_t
warning: (i386) could not find object file symbol for symbol
___selectors_MOD___copy_selectors_Selector_t
...
These failures appear with
[Book15] f90/bug% dsymutil -v
Apple LLVM 7.0.0 (clang-700.1.76)
but I don't see them with
@(#)PROGRAM:dsymutil PROJECT:dwarfutils-119
With the patch
--- ../_clean/gcc/testsuite/lib/prune.exp 2015-10-09 18:05:39.000000000
+0200
+++ gcc/testsuite/lib/prune.exp 2015-11-15 12:10:09.000000000 +0100
@@ -69,6 +69,9 @@ proc prune_gcc_output { text } {
# Ignore harmless warnings from Xcode 4.0.
regsub -all "(^|\n)\[^\n\]*ld: warning: could not create compact unwind
for\[^\n\]*" $text "" text
+
+ # Ignore harmless warnings from Xcode 7.0.
+ regsub -all "(^|\n)warning: \[^\n\]* could not find object file symbol for
symbol\[^\n\]*" $text "" text
# Call into multiline.exp to handle any multiline output directives.
set text [handle-multiline-outputs $text]
these failures are gone.
Before reporting upstream, I'ld like to be sure that the issue is not due to
gfortran and/or lto: as shown by PRs 60061, 66238, and 66762, there are still
pending problems when mixing gfortran and -flto.
