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Sync libiberty with upstream GCC.

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libiberty/ChangeLog:

	PR demangler/80513
	* cp-demangle.c (d_number): Check for overflow.
	* cplus-dem.c (consume_count): Fix overflow check.
	(gnu_special): Check for underscore after thunk delta.
	* testsuite/demangle-expected: Add tests for overflows and invalid
	characters in thunks.

	* 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.

	* cp-demangle.c (d_substitution): Return NULL if d_add_substitution
	fails.

	* cp-demangle.h (struct d_info): Remove did_subs field.
	* cp-demangle.c (struct d_info_checkpoint): Likewise.
	(d_template_param): Don't update did_subs.
	(d_substitution): Likewise.
	(d_checkpoint): Don't assign did_subs.
	(d_backtrack): Likewise.
	(cplus_demangle_init_info): Don't initialize did_subs.
This commit is contained in:
Iain Buclaw
2017-06-25 11:39:05 +02:00
parent 5cc4ca837d
commit 2d3392bd42
5 changed files with 69 additions and 25 deletions
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15
libiberty/testsuite/demangle-expected
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@@ -4720,3 +4720,18 @@ _ZdvMMMMMMMMMMMMMrrrrA_DTdvfp_fp_Eededilfdfdfdfd
_Z1MA_aMMMMA_MMA_MMMMMMMMSt1MS_o11T0000000000t2M0oooozoooo
_Z1MA_aMMMMA_MMA_MMMMMMMMSt1MS_o11T0000000000t2M0oooozoooo
#
# demangler/80513 Test for overflow in d_number
_Z4294967297x
_Z4294967297x
#
# demangler/80513 Test for bogus characters after __thunk_
__thunk_16a_$_1x
__thunk_16a_$_1x
#
# demangler/80513 Test for overflow in consume_count
__thunk_4294967297__$_1x
__thunk_4294967297__$_1x