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demangle-expected: Add test case for infinite loop in demangler.

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* testsuite/demangle-expected: Add test case for infinite loop in
demangler.
* cplus-dem.c (demangle_arm_hp_template): Stop trying to demangle
if do_type() doesn't make any progress --- prevents an infinite
loop.

From-SVN: r49875
This commit is contained in:
Scott Snyder 2002-02-19 20:02:16 +00:00 committed by DJ Delorie
parent 6d1def5c66
commit b1c1a22fb2
3 changed files with 23 additions and 2 deletions
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8
libiberty/ChangeLog
View File

@ -1,3 +1,11 @@
2002-02-19 Scott Snyder <snyder@fnal.gov>
* testsuite/demangle-expected: Add test case for infinite loop in
demangler.
* cplus-dem.c (demangle_arm_hp_template): Stop trying to demangle
if do_type() doesn't make any progress --- prevents an infinite
loop.
2002-02-18 Carlo Wood <carlo@gnu.org> 2002-02-18 Carlo Wood <carlo@gnu.org>
PR c++/5390 PR c++/5390

7
libiberty/cplus-dem.c
View File

@ -2414,8 +2414,15 @@ demangle_arm_hp_template (work, mangled, n, declp)
break; break;
default: default:
/* Not handling other HP cfront stuff */ /* Not handling other HP cfront stuff */
{
const char* old_args = args;
if (!do_type (work, &args, &arg)) if (!do_type (work, &args, &arg))
goto cfront_template_args_done; goto cfront_template_args_done;
/* Fail if we didn't make any progress: prevent infinite loop. */
if (args == old_args)
return;
}
} }
string_appends (declp, &arg); string_appends (declp, &arg);
string_append (declp, ","); string_append (declp, ",");

6
libiberty/testsuite/demangle-expected
View File

@ -2594,3 +2594,9 @@ _Utf58_0_1__1_2147483647__2147483648
--format=gnu-v3 --format=gnu-v3
St9bad_alloc St9bad_alloc
std::bad_alloc std::bad_alloc
#
# This caused an infinite loop.
# We still don't demangle this correctly, but at least we don't hang.
--format=auto
__CPR212____ct__Q3_3std141list__tm__128_Q2_3edm41THandle__tm__26_Q2_4emid15EMparticleChunkQ2_3std68allocator__tm__51_Q2_3edmJ37J14const_iteratorFRCQ3_3std18list__tm__7_Z1ZZ2Z8iterator
_Z1ZZ2Z::__CPR212____ct__Q3_3std141list__tm__128_Q2_3edm41THandle__tm__26_Q2_4emid15EMparticleChunkQ2_3std68allocator__tm__51_Q2_3edmJ37J14const_iteratorFRCQ3_3std18list__tm(iterator)