[Bug regression/53130] New: [4.8 Regression]: gcc.dg/20011021-1.c, gcc.dg/m-un-2.c, gcc.dg/missing-field-init-2.c

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53130

             Bug #: 53130
           Summary: [4.8 Regression]: gcc.dg/20011021-1.c,
                    gcc.dg/m-un-2.c, gcc.dg/missing-field-init-2.c
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hp@gcc.gnu.org
                CC: jakub@gcc.gnu.org, manu@gcc.gnu.org
              Host: x86_64-unknown-linux-gnu
            Target: cris-elf, x86_86-linux, s390x-linux, i686-linux


These tests previously passed, now they fail.
A patch in the revision range (last_known_working:first_known_failing)
186805:186809
exposed or caused these regressions.  Since then they fail as follows:

Running /tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/dg.exp ...
FAIL: gcc.dg/20011021-1.c near init (test for warnings, line 30)
FAIL: gcc.dg/20011021-1.c  (test for warnings, line 34)
FAIL: gcc.dg/20011021-1.c  (test for warnings, line 41)
FAIL: gcc.dg/20011021-1.c  (test for warnings, line 44)
FAIL: gcc.dg/20011021-1.c near init (test for warnings, line 27)
FAIL: gcc.dg/20011021-1.c (test for excess errors)
...
FAIL: gcc.dg/m-un-2.c warning regression 2 (test for warnings, line 12)
FAIL: gcc.dg/m-un-2.c (test for excess errors)
FAIL: gcc.dg/missing-field-init-2.c  (test for warnings, line 7)
FAIL: gcc.dg/missing-field-init-2.c  (test for warnings, line 8)
FAIL: gcc.dg/missing-field-init-2.c  (test for warnings, line 14)
FAIL: gcc.dg/missing-field-init-2.c (test for excess errors)


The messages in gcc.log are similar:

Executing on host: /tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/xgcc
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/20011021-1.c 
-fno-diagnostics-show-caret   -std=c99 -W -Wall -Wtraditional -S   -isystem
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./newlib/targ-include -isystem
/tmp/hpautotest-gcc1/gcc/newlib/libc/include  -o 20011021-1.s    (timeout =
300)
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/20011021-1.c:30:8: warning:
missing initializer for field 'b' of 'struct t' [-Wmissing-field-initializers]
'
in c_tree_printer, at c-objc-common.c:136
Please submit a full bug report,
...
Executing on host: /tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/xgcc
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/m-un-2.c 
-fno-diagnostics-show-caret   -W -Wall -S   -isystem
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./newlib/targ-include -isystem
/tmp/hpautotest-gcc1/gcc/newlib/libc/include  -o m-un-2.s    (timeout = 300)
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/m-un-2.c:18:1: warning: missing
initializer for field '_realloc' of 'struct vtable'
[-Wmissing-field-initializers]
'
in c_tree_printer, at c-objc-common.c:136
Please submit a full bug report,
...
Executing on host: /tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/xgcc
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/gcc/
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/missing-field-init-2.c 
-fno-diagnostics-show-caret   -Wmissing-field-initializers -std=c99 -S  
-isystem /tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/./newlib/targ-include
-isystem /tmp/hpautotest-gcc1/gcc/newlib/libc/include  -o
missing-field-init-2.s    (timeout = 300)
/tmp/hpautotest-gcc1/gcc/gcc/testsuite/gcc.dg/missing-field-init-2.c:6:8:
warning: missing initializer for field 'c' of 'struct s'
[-Wmissing-field-initializers]
'
in c_tree_printer, at c-objc-common.c:136
Please submit a full bug report,
...

Authors of suspect patches in revision range CC:ed.

It seems these tests fail for all major architectures (3 out of 3 for the
latest messages on gcc-testresults@ at the time of this writing).