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Pedro Alves dc3a371e83 gdb/testsuite: Explicitly return from main 
I've been playing with a board file that forces every testcase to
include a header file that does something like:

  #define main __gdb_testcase_main

and then links an actual main() function that does some
initialization and then jumps to __gdb_testcase_main.

That runs into a number of testcases relying on main not having an
explicit return statement, like e.g.,:

 gdb/build/gdb/testsuite/../../../src/gdb/testsuite/gdb.base/catch-follow-exec.c:27:1: warning: non-void function does not return a value [-Wreturn-type]
 gdb/build/gdb/testsuite/../../../src/gdb/testsuite/gdb.base/catch-signal.c:47:1: warning: non-void function does not return a value [-Wreturn-type]

We don't get those warnings without my board because it is valid to
not explicitly return from main.  There's an implicit "return 0;".

Since it doesn't hurt to be explicit, I've went ahead and added the
explicit return statements.

Also, a couple testcases either don't explicitly specify main's return
type, or return void.  Those are tweaked to explicitly return int.

gdb/testsuite/ChangeLog:

	* gdb.base/catch-follow-exec.c (main): Add explicit return
	statement.
	* gdb.base/catch-signal.c (main): Likewise.
	* gdb.base/condbreak-call-false.c (main): Likewise.
	* gdb.base/consecutive.c (main): Add explicit return
	statement and return type.
	* gdb.base/cursal.c (main): Add explicit return statement.
	* gdb.base/cvexpr.c (main): Likewise.
	* gdb.base/display.c (main): Add explicit return statement and
	return type.
	* gdb.base/dprintf-detach.c (main): Add explicit return statement.
	* gdb.base/endianity.c (main): Likewise.
	* gdb.base/execd-prog.c (main): Likewise.
	* gdb.base/gdb1090.c (main): Likewise.
	* gdb.base/info_qt.c (main): Likewise.
	* gdb.base/lineinc.c (main): Likewise.
	* gdb.base/load-command.c (main): Likewise.
	* gdb.base/macscp1.c (main): Likewise.
	* gdb.base/pr10179-a.c (main): Likewise.
	* gdb.base/quit-live.c (main): Likewise.
	* gdb.base/scope0.c (main): Likewise.
	* gdb.base/settings.c (main): Likewise.
	* gdb.base/stack-checking.c (main): Return int.
	* gdb.base/varargs.c (main): Add explicit return statement.
	* gdb.cp/ambiguous.cc (main): Likewise.
	* gdb.cp/anon-struct.cc (main): Likewise.
	* gdb.cp/anon-union.cc (main): Likewise.
	* gdb.cp/bool.cc (main): Likewise.
	* gdb.cp/bs15503.cc (main): Likewise.
	* gdb.cp/cplusfuncs.cc (main): Likewise.
	* gdb.cp/cttiadd.cc (main): Likewise.
	* gdb.cp/extern-c.cc (main): Likewise.
	* gdb.cp/filename.cc (main): Likewise.
	* gdb.cp/formatted-ref.cc (main): Likewise.
	* gdb.cp/mb-ctor.cc (main): Likewise.
	* gdb.cp/member-ptr.cc (main): Likewise.
	* gdb.cp/minsym-fallback-main.cc (main): Likewise.
	* gdb.cp/overload-const.cc (main): Likewise.
	* gdb.cp/paren-type.cc (main): Likewise.
	* gdb.cp/parse-lang.cc (main): Likewise.
	* gdb.cp/pr-1023.cc (main): Likewise.
	* gdb.cp/psmang1.cc (main): Likewise.
	* gdb.cp/readnow-language.cc (main): Likewise.
	* gdb.cp/ref-params.cc (main): Likewise.
	* gdb.cp/rvalue-ref-params.cc (main): Likewise.
	* gdb.cp/virtbase2.cc (main): Likewise.
	* gdb.dwarf2/dw2-abs-hi-pc.c (main): Likewise.
	* gdb.dwarf2/dw2-namespaceless-anonymous.c (main): Likewise.
	* gdb.dwarf2/dw4-toplevel-types.cc (main): Likewise.
	* gdb.mi/mi-console.c (main): Likewise.
	* gdb.mi/mi-read-memory.c (main): Likewise.
	* gdb.modula2/multidim.c (main): Likewise.
	* gdb.opt/inline-small-func.c (main): Likewise.
	* gdb.python/py-rbreak.c (main): Likewise.
	* gdb.stabs/exclfwd1.c (main): Likewise.
	* gdb.trace/qtro.c (main): Likewise.
2020-09-13 22:47:01 +01:00
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amd64-py-framefilter-invalidarg.S Update copyright year range in all GDB files. 2020-01-01 10:20:53 +04:00
lib-types.cc Update copyright year range in all GDB files. 2020-01-01 10:20:53 +04:00
lib-types.exp [gdb/testsuite] Fix xpass in gdb.python/lib-types.exp 2020-02-19 22:57:19 +01:00
py-arch-reg-groups.exp gdb/python: Reuse gdb.RegisterGroup objects where possible 2020-07-21 21:57:08 +01:00
py-arch-reg-names.exp gdb: Add a find method for RegisterDescriptorIterator 2020-07-28 10:27:53 +01:00
py-arch.c Update copyright year range in all GDB files. 2020-01-01 10:20:53 +04:00
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py-cmd.exp Fix test breakages caused by removal of gdb_py_test_multiple. 2020-06-30 18:40:21 +02:00
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py-finish-breakpoint2.py Update copyright year range in all GDB files. 2020-01-01 10:20:53 +04:00
py-finish-breakpoint.c Fix "control reaches end of non-void function" errors in testsuite 2020-05-15 15:03:42 +01:00
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py-format-string.exp Fix TCL error in gdb.python/py-format-string.exp. 2020-06-17 13:43:32 -07:00
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py-frame.c
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py-function.exp Fix test breakages caused by removal of gdb_py_test_multiple. 2020-06-30 18:40:21 +02:00
py-inferior.c
py-inferior.exp Fix test breakages caused by removal of gdb_py_test_multiple. 2020-06-30 18:40:21 +02:00
py-infthread.c
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py-linetable.exp Fix test breakages caused by removal of gdb_py_test_multiple. 2020-06-30 18:40:21 +02:00
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py-nested-maps.c Add two missing return values in gdb.python/py-nested-maps.c 2020-06-16 12:41:28 +01:00
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py-parameter.exp Fix test breakages caused by removal of gdb_py_test_multiple. 2020-06-30 18:40:21 +02:00
py-pp-integral.c Improve -Wunused-value testcase build failures fix 2020-06-23 15:11:27 +01:00
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py-rbreak-func2.c Update copyright year range in all GDB files. 2020-01-01 10:20:53 +04:00
py-rbreak.c gdb/testsuite: Explicitly return from main 2020-09-13 22:47:01 +01:00
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py-symbol.exp Use the linkage name if it exists 2020-04-24 15:35:03 -06:00
py-symtab.exp [gdb/testsuite] Add xfails for PR gcc/90232 2020-04-29 13:22:21 +02:00
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py-unwind-inline.c gdb: Python unwinders, inline frames, and tail-call frames 2020-07-06 15:06:07 +01:00
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py-unwind.py gdb/python: make more use of RegisterDescriptors 2020-07-28 10:27:54 +01:00
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py-value.exp Fix test breakages caused by removal of gdb_py_test_multiple. 2020-06-30 18:40:21 +02:00
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tui-window.exp Fix crash when TUI window creation fails 2020-06-16 17:48:38 -06:00
tui-window.py Fix crash when TUI window creation fails 2020-06-16 17:48:38 -06:00