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Change streq to return bool

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I wanted to use streq with std::unique in another (upcoming) patch in
this seres, so I changed it to return bool.  To my surprise, this lead
to regressions.  The cause turned out to be that streq was used as an
htab callback -- by casting it to the correct function type.  This
sort of cast is invalid, so this patch adds a variant which is
directly suitable for use by htab.  (Note that I did not add an
overload, as I could not get that to work with template deduction in
the other patch.)

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* completer.c (completion_tracker::completion_tracker): Remove
	cast.
	(completion_tracker::discard_completions): Likewise.
	* breakpoint.c (ambiguous_names_p): Remove cast.
	* ada-lang.c (_initialize_ada_language): Remove cast.
	* utils.h (streq): Update.
	(streq_hash): Add new declaration.
	* utils.c (streq): Return bool.
	(streq_hash): New function.
This commit is contained in:
Tom Tromey 2018-04-01 09:33:13 -06:00
parent 9be2c17a90
commit 459a2e4ccf
6 changed files with 37 additions and 12 deletions
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5
gdb/ada-lang.c
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@ -14722,9 +14722,8 @@ When enabled, the debugger will stop using the DW_AT_GNAT_descriptive_type\n\
DWARF attribute."),
NULL, NULL, &maint_set_ada_cmdlist, &maint_show_ada_cmdlist);
decoded_names_store = htab_create_alloc
(256, htab_hash_string, (int (*)(const void *, const void *)) streq,
NULL, xcalloc, xfree);
decoded_names_store = htab_create_alloc (256, htab_hash_string, streq_hash,
NULL, xcalloc, xfree);
/* The ada-lang observers. */
gdb::observers::new_objfile.attach (ada_new_objfile_observer);