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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/98912] New: valgrind error in default_elf_asm_output_ascii
Date: Mon, 01 Feb 2021 10:44:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98912

            Bug ID: 98912
           Summary: valgrind error in default_elf_asm_output_ascii
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 50105
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50105&action=3Dedit
fortran source code

For the attached fortran source code file, compiled as follows:

$ /home/dcb/gcc/results.20210131.valgrind/bin/gfortran -flto=3Dauto getfnam=
e.f

does this:

=3D=3D29891=3D=3D Conditional jump or move depends on uninitialised value(s)
=3D=3D29891=3D=3D    at 0xF68B43: default_elf_asm_output_ascii(_IO_FILE*, c=
har const*,
u
nsigned int) (varasm.c:8285)
=3D=3D29891=3D=3D    by 0xF68A8F: assemble_string(char const*, int) (varasm=
.c:2069)
=3D=3D29891=3D=3D    by 0xAAA5EF: lhd_append_data(void const*, unsigned lon=
g, void*)
(la
nghooks.c:823)
=3D=3D29891=3D=3D    by 0xAFC984: produce_lto_section (lto-streamer-out.c:2=
675)=