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From: "gprocida at google dot com" <sourceware-bugzilla@sourceware.org>
To: libabigail@sourceware.org
Subject: [Bug default/28013] New: abidiff assertion failure
Date: Fri, 25 Jun 2021 23:20:50 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28013

            Bug ID: 28013
           Summary: abidiff assertion failure
           Product: libabigail
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: gprocida at google dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

This small case triggers an assertion failure. If assertions are disabled t=
he
output looks sane.

abidiff: ../../src/abg-ir.cc:24767: size_t
abigail::ir::hash_as_canonical_type_or_constant(const abigail::ir::type_bas=
e*):
Assertion `__abg_cond__' failed.
Aborted

=3D=3D> fn_variadic_c.0.abi <=3D=3D
<abi-corpus version=3D'2.0' path=3D'fn_variadic_c.0.o'
architecture=3D'elf-amd-x86_64'>
  <elf-function-symbols>
    <elf-symbol name=3D'foo1' type=3D'func-type' binding=3D'global-binding'
visibility=3D'default-visibility' is-defined=3D'yes'/>
    <elf-symbol name=3D'foo2' type=3D'func-type' binding=3D'global-binding'
visibility=3D'default-visibility' is-defined=3D'yes'/>
    <elf-symbol name=3D'foo3' type=3D'func-type' binding=3D'global-binding'
visibility=3D'default-visibility' is-defined=3D'yes'/>
  </elf-function-symbols>
  <abi-instr address-size=3D'64' path=3D'fn_variadic_c.0.c' language=3D'LAN=
G_C99'>
    <type-decl name=3D'int' size-in-bits=3D'32' id=3D'95e97e5e'/>
    <type-decl name=3D'variadic parameter type' id=3D'2c1145c5'/>
    <function-decl name=3D'foo3' mangled-name=3D'foo3' visibility=3D'defaul=
t'
binding=3D'global' size-in-bits=3D'64' elf-symbol-id=3D'foo3'>
      <parameter type-id=3D'95e97e5e' name=3D'x'/>
      <parameter type-id=3D'95e97e5e' name=3D'y'/>
      <parameter is-variadic=3D'yes'/>
      <return type-id=3D'95e97e5e'/>
    </function-decl>
    <function-decl name=3D'foo2' mangled-name=3D'foo2' visibility=3D'defaul=
t'
binding=3D'global' size-in-bits=3D'64' elf-symbol-id=3D'foo2'>
      <parameter type-id=3D'95e97e5e' name=3D'x'/>
      <parameter type-id=3D'95e97e5e' name=3D'y'/>
      <return type-id=3D'95e97e5e'/>
    </function-decl>
    <function-decl name=3D'foo1' mangled-name=3D'foo1' visibility=3D'defaul=
t'
binding=3D'global' size-in-bits=3D'64' elf-symbol-id=3D'foo1'>
      <parameter type-id=3D'95e97e5e' name=3D'x'/>
      <parameter type-id=3D'95e97e5e' name=3D'y'/>
      <return type-id=3D'95e97e5e'/>
    </function-decl>
  </abi-instr>
</abi-corpus>

=3D=3D> fn_variadic_c.1.abi <=3D=3D
<abi-corpus version=3D'2.0' path=3D'fn_variadic_c.1.o'
architecture=3D'elf-amd-x86_64'>
  <elf-function-symbols>
    <elf-symbol name=3D'foo1' type=3D'func-type' binding=3D'global-binding'
visibility=3D'default-visibility' is-defined=3D'yes'/>
    <elf-symbol name=3D'foo2' type=3D'func-type' binding=3D'global-binding'
visibility=3D'default-visibility' is-defined=3D'yes'/>
    <elf-symbol name=3D'foo3' type=3D'func-type' binding=3D'global-binding'
visibility=3D'default-visibility' is-defined=3D'yes'/>
  </elf-function-symbols>
  <abi-instr address-size=3D'64' path=3D'fn_variadic_c.1.c' language=3D'LAN=
G_C99'>
    <type-decl name=3D'int' size-in-bits=3D'32' id=3D'95e97e5e'/>
    <type-decl name=3D'variadic parameter type' id=3D'2c1145c5'/>
    <function-decl name=3D'foo3' mangled-name=3D'foo3' visibility=3D'defaul=
t'
binding=3D'global' size-in-bits=3D'64' elf-symbol-id=3D'foo3'>
      <parameter type-id=3D'95e97e5e' name=3D'x'/>
      <parameter type-id=3D'95e97e5e' name=3D'y'/>
      <return type-id=3D'95e97e5e'/>
    </function-decl>
    <function-decl name=3D'foo2' mangled-name=3D'foo2' visibility=3D'defaul=
t'
binding=3D'global' size-in-bits=3D'64' elf-symbol-id=3D'foo2'>
      <parameter type-id=3D'95e97e5e' name=3D'x'/>
      <parameter is-variadic=3D'yes'/>
      <return type-id=3D'95e97e5e'/>
    </function-decl>
    <function-decl name=3D'foo1' mangled-name=3D'foo1' visibility=3D'defaul=
t'
binding=3D'global' size-in-bits=3D'64' elf-symbol-id=3D'foo1'>
      <parameter type-id=3D'95e97e5e' name=3D'x'/>
      <parameter type-id=3D'95e97e5e' name=3D'y'/>
      <parameter is-variadic=3D'yes'/>
      <return type-id=3D'95e97e5e'/>
    </function-decl>
  </abi-instr>
</abi-corpus>

It's also interesting that the XML contains a variadic parameter type but t=
his
isn't used in the parameter lists.

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