C++ PATCH for c++/53756 (-g and C++1y auto)

[Andreas Schwab]

Jason Merrill <jason@redhat.com> writes:

> +// { dg-final { scan-assembler "a1.*(0x\[0-9a-f\]+)\[ \t\]*# DW_AT_type.*\\1. DW_TAG_unspecified_type.*DW_AT_specification\[\n\r\]{1,2}\[^\n\r\]*(0x\[0-9a-f\]+)\[ \t\]*# DW_AT_type.*\\2. DW_TAG_base_type" } }

This regexp is completely broken.

Here's what I get on m68k:

	.uleb128 0x3	| (DIE (0x2b) DW_TAG_subprogram)
			| DW_AT_external
	.ascii "a1\0"	| DW_AT_name
	.byte	0x1	| DW_AT_decl_file (/daten/aranym/gcc/gcc-20140129/gcc/testsuite/g++.dg/debug/dwarf2/auto1.C)
	.byte	0x17	| DW_AT_decl_line
	.long	.LASF2	| DW_AT_linkage_name: "_ZN1A2a1Ev"
	.long	0x44	| DW_AT_type
			| DW_AT_declaration
	.long	0x3d	| DW_AT_object_pointer
	.uleb128 0x4	| (DIE (0x3d) DW_TAG_formal_parameter)
	.long	0x49	| DW_AT_type
			| DW_AT_artificial
	.byte	0	| end of children of DIE 0x2b
	.byte	0	| end of children of DIE 0x21
	.uleb128 0x5	| (DIE (0x44) DW_TAG_unspecified_type)
	.long	.LASF3	| DW_AT_name: "auto"
	.uleb128 0x6	| (DIE (0x49) DW_TAG_pointer_type)
	.byte	0x4	| DW_AT_byte_size
	.long	0x21	| DW_AT_type
	.uleb128 0x7	| (DIE (0x4f) DW_TAG_subprogram)
	.long	0x2b	| DW_AT_specification
	.long	0x77	| DW_AT_type
	.long	.LFB0	| DW_AT_low_pc
	.long	.LFE0-.LFB0	| DW_AT_high_pc
	.uleb128 0x1	| DW_AT_frame_base
	.byte	0x9c	| DW_OP_call_frame_cfa
	.long	0x6a	| DW_AT_object_pointer
			| DW_AT_GNU_all_call_sites
	.long	0x77	| DW_AT_sibling
	.uleb128 0x8	| (DIE (0x6a) DW_TAG_formal_parameter)
	.long	.LASF4	| DW_AT_name: "this"
	.long	0x7e	| DW_AT_type
			| DW_AT_artificial
	.uleb128 0x2	| DW_AT_location
	.byte	0x91	| DW_OP_fbreg
	.sleb128 0
	.byte	0	| end of children of DIE 0x4f
	.uleb128 0x9	| (DIE (0x77) DW_TAG_base_type)
	.byte	0x4	| DW_AT_byte_size
	.byte	0x5	| DW_AT_encoding
	.ascii "int\0"	| DW_AT_name

And this is what I get on ia64:

	.uleb128 0x3	// (DIE (0x2f) DW_TAG_subprogram)
			// DW_AT_external
	.ascii "a1\0"	// DW_AT_name
	data1	0x1	// DW_AT_decl_file (/usr/local/gcc/gcc-20140129/gcc/testsuite/g++.dg/debug/dwarf2/auto1.C)
	data1	0x17	// DW_AT_decl_line
	data4.ua	@secrel(.LASF2)	// DW_AT_linkage_name: "_ZN1A2a1Ev"
	data4.ua	0x48	// DW_AT_type
			// DW_AT_declaration
	data4.ua	0x41	// DW_AT_object_pointer
	.uleb128 0x4	// (DIE (0x41) DW_TAG_formal_parameter)
	data4.ua	0x4d	// DW_AT_type
			// DW_AT_artificial
	data1	0	// end of children of DIE 0x2f
	data1	0	// end of children of DIE 0x25
	.uleb128 0x5	// (DIE (0x48) DW_TAG_unspecified_type)
	data4.ua	@secrel(.LASF3)	// DW_AT_name: "auto"
	.uleb128 0x6	// (DIE (0x4d) DW_TAG_pointer_type)
	data1	0x8	// DW_AT_byte_size
	data4.ua	0x25	// DW_AT_type
	.uleb128 0x7	// (DIE (0x53) DW_TAG_subprogram)
	data4.ua	0x2f	// DW_AT_specification
	data4.ua	0x85	// DW_AT_type
	data8.ua	.LFB0	// DW_AT_low_pc
	data8.ua	.LFE0-.LFB0	// DW_AT_high_pc
	data4.ua	@secrel(.LLST0)	// DW_AT_frame_base
	data4.ua	0x78	// DW_AT_object_pointer
			// DW_AT_GNU_all_call_sites
	data4.ua	0x85	// DW_AT_sibling
	.uleb128 0x8	// (DIE (0x78) DW_TAG_formal_parameter)
	data4.ua	@secrel(.LASF4)	// DW_AT_name: "this"
	data4.ua	0x8c	// DW_AT_type
			// DW_AT_artificial
	.uleb128 0x2	// DW_AT_location
	data1	0x91	// DW_OP_fbreg
	.sleb128 0
	data1	0	// end of children of DIE 0x53
	.uleb128 0x9	// (DIE (0x85) DW_TAG_base_type)
	data1	0x4	// DW_AT_byte_size
	data1	0x5	// DW_AT_encoding
	.ascii "int\0"	// DW_AT_name

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."