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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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4
libiberty/cp-demangle.h
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@ -111,10 +111,6 @@ struct d_info
int next_sub;
/* The number of available entries in the subs array. */
int num_subs;
/* The number of substitutions which we actually made from the subs
array, plus the number of template parameter references we
saw. */
int did_subs;
/* The last name we saw, for constructors and destructors. */
struct demangle_component *last_name;
/* A running total of the length of large expansions from the