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| author | Mark Wielaard <mark@klomp.org> | 2017-04-21 09:02:03 +0000 |
|---|---|---|
| committer | Mark Wielaard <mark@gcc.gnu.org> | 2017-04-21 09:02:03 +0000 |
| commit | 6b086d35b79425de90a09c8bd843170a038fbde8 (patch) | |
| tree | 8229f4b0678829d2f4ee36ac3f394bc4b2c195cb /libiberty/ChangeLog | |
| parent | 13b6ef76dc275232310ebfca27db08aeef9b858c (diff) | |
| download | gcc-6b086d35b79425de90a09c8bd843170a038fbde8.zip gcc-6b086d35b79425de90a09c8bd843170a038fbde8.tar.gz gcc-6b086d35b79425de90a09c8bd843170a038fbde8.tar.bz2 | |
libiberty: Limit demangler maximum d_print_comp recursion call depth.
The fix for PR demangler/70909 and 67264 (endless demangler recursion)
catches when a demangle_component is printed in a cycle. But that doesn't
protect the call stack blowing up from non-cyclic nested types printed
recursively through d_print_comp. This can happen by a (very) long mangled
string that simply creates a very deep pointer or qualifier chain. Limit
the recursive d_print_comp call depth for a d_print_info to 1K nested
types.
libiberty/ChangeLog:
* cp-demangle.c (MAX_RECURSION_COUNT): New constant.
(struct d_print_info): Add recursion field.
(d_print_init): Initialize recursion.
(d_print_comp): Check and update d_print_info recursion depth.
From-SVN: r247056
Diffstat (limited to 'libiberty/ChangeLog')
| -rw-r--r-- | libiberty/ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog index 673eb26..34e585e 100644 --- a/libiberty/ChangeLog +++ b/libiberty/ChangeLog @@ -1,5 +1,12 @@ 2017-04-21 Mark Wielaard <mark@klomp.org> + * cp-demangle.c (MAX_RECURSION_COUNT): New constant. + (struct d_print_info): Add recursion field. + (d_print_init): Initialize recursion. + (d_print_comp): Check and update d_print_info recursion depth. + +2017-04-21 Mark Wielaard <mark@klomp.org> + * cp-demangle.c (d_substitution): Return NULL if d_add_substitution fails. |