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743649fd80
binutils-gdb/include
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Mark Wielaard 743649fd80 Use GCC5/DWARF5 DW_AT_noreturn to mark functions that don't return normally. 
Add a flag field is_noreturn to struct func_type. Make calling_convention
a small bit field to not increase the size of the struct. Set is_noreturn
if the new GCC5/DWARF5 DW_AT_noreturn is set on a DW_TAG_subprogram.
Use this information to warn the user before doing a finish or return from
a function that does not return normally to its caller.

(gdb) finish
warning: Function endless does not return normally.
Try to finish anyway? (y or n)

(gdb) return
warning: Function does not return normally to caller.
Make endless return now? (y or n)

gdb/ChangeLog

	* dwarf2read.c (read_subroutine_type): Set TYPE_NO_RETURN from
	DW_AT_noreturn.
	* gdbtypes.h (struct func_type): Add is_noreturn field flag. Make
	calling_convention an 8 bit bit field.
	(TYPE_NO_RETURN): New macro.
	* infcmd.c (finish_command): Query if function does not return
	normally.
	* stack.c (return_command): Likewise.

gdb/testsuite/ChangeLog

	* gdb.base/noreturn-return.c: New file.
	* gdb.base/noreturn-return.exp: New file.
	* gdb.base/noreturn-finish.c: New file.
	* gdb.base/noreturn-finish.exp: New file.

include/ChangeLog

	* dwarf2.def (DW_AT_noreturn): New DWARF5 attribute.

The dwarf2.h addition and the code to emit the new attribute is already in
the gcc tree.
2015-01-23 17:29:19 +01:00
..
aout ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
cgen ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
coff Fixes a buffer overflow when compiling assembler for the MinGW targets. 2015-01-06 16:46:40 +00:00
elf Use official ELF machine number for moxie 2015-01-09 07:13:07 -05:00
gdb Update year range in copyright notice of all files owned by the GDB project. 2015-01-01 13:32:14 +04:00
mach-o ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
nlm ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
opcode S/390: Add support for IBM z13. 2015-01-16 12:28:58 +01:00
som ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
vms ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
alloca-conf.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ansidecl.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
bfdlink.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
binary-io.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
bout.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ChangeLog Use GCC5/DWARF5 DW_AT_noreturn to mark functions that don't return normally. 2015-01-23 17:29:19 +01:00
ChangeLog-9103 Add copyright notices 2012-12-10 12:48:03 +00:00
COPYING Update the address and phone number of the FSF organization 2005-05-10 10:21:13 +00:00
COPYING3 * COPYING3: New file. Contains version 3 of the GNU General Public License. 2007-07-17 13:50:23 +00:00
demangle.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dis-asm.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dwarf2.def Use GCC5/DWARF5 DW_AT_noreturn to mark functions that don't return normally. 2015-01-23 17:29:19 +01:00
dwarf2.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dyn-string.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fibheap.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
filenames.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
floatformat.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fnmatch.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fopen-bin.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fopen-same.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fopen-vms.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
gcc-c-fe.def ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
gcc-c-interface.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
gcc-interface.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
getopt.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
hashtab.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
hp-symtab.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ieee.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
leb128.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
libiberty.h Merge include/libiberty.h from GCC 2015-01-14 22:15:02 +01:00
longlong.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
lto-symtab.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
MAINTAINERS ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
md5.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
oasys.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
objalloc.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
obstack.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
os9k.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
partition.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
plugin-api.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
progress.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
safe-ctype.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
sha1.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
simple-object.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
sort.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
splay-tree.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
symcat.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
timeval-utils.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
vtv-change-permission.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xregex2.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xregex.h merge from gcc 2011-07-25 17:11:48 +00:00
xtensa-config.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xtensa-isa-internal.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
xtensa-isa.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30