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* [Bug symtab/28108] New: [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp
@ 2021-07-20 5:18 vries at gcc dot gnu.org
2021-07-20 5:47 ` [Bug symtab/28108] " vries at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: vries at gcc dot gnu.org @ 2021-07-20 5:18 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=28108
Bug ID: 28108
Summary: [gcc-11] FAIL: gdb.base/langs.exp: up to foo in
langs.exp
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: symtab
Assignee: unassigned at sourceware dot org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
When running with gcc-11 (with -gdwarf-5 default), I run into:
...
FAIL: gdb.base/langs.exp: up to foo in langs.exp
FAIL: gdb.base/langs.exp: up to cppsub_ in langs.exp
FAIL: gdb.base/langs.exp: up to fsub in langs.exp
...
In more detail:
...
(gdb) up^M
#1 0x0000000000400520 in foo__Fi (x=10000) at
/home/vries/gdb_versions/devel/build/gdb/testsuite/langs2.cxx:5^M
5 return csub (x / 2);^M
(gdb) FAIL: gdb.base/langs.exp: up to foo in langs.exp
...
while with say -gdwarf-4 we have:
...
(gdb) up^M
#1 0x0000000000400520 in foo__Fi (x=10000) at langs2.cxx:5^M
5 return csub (x / 2);^M
(gdb) PASS: gdb.base/langs.exp: up to foo in langs.exp
...
The difference is
"/home/vries/gdb_versions/devel/build/gdb/testsuite/langs2.cxx" vs
"langs2.cxx".
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* [Bug symtab/28108] [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp
2021-07-20 5:18 [Bug symtab/28108] New: [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp vries at gcc dot gnu.org
@ 2021-07-20 5:47 ` vries at gcc dot gnu.org
2021-07-20 11:03 ` vries at gcc dot gnu.org
2023-10-25 14:24 ` [Bug testsuite/28108] " vries at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: vries at gcc dot gnu.org @ 2021-07-20 5:47 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=28108
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
With -gdwarf-4, we have:
...
<0><243>: Abbrev Number: 1 (DW_TAG_compile_unit)
<244> DW_AT_producer : (indirect string, offset: 0x208): GNU C17
11.1.1 20210625 [revision 62bbb113ae68a7e724255e17143520735bcb9ec9]
-mtune=generic -march=x86-64 -gdwarf-4 -fno-stack-protector
<248> DW_AT_language : 12 (ANSI C99)
<249> DW_AT_name : (indirect string, offset: 0x34d):
/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.base/langs2.c
<24d> DW_AT_comp_dir : (indirect string, offset: 0x1d0):
/home/vries/gdb_versions/devel/build/gdb/testsuite
<251> DW_AT_low_pc : 0x400502
<259> DW_AT_high_pc : 0x3b
<261> DW_AT_stmt_list : 0x20f
...
and at 0x20f:
...
The Directory Table is empty.
The File Name Table (offset 0x22c):
Entry Dir Time Size Name
1 0 0 0 langs2.cxx
...
With -gdwarf-5, we have:
...
<0><242>: Abbrev Number: 2 (DW_TAG_compile_unit)
<243> DW_AT_producer : (indirect string, offset: 0x1d0): GNU C17
11.1.1 20210625 [revision 62bbb113ae68a7e724255e17143520735bcb9ec9]
-mtune=generic -march=x86-64 -gdwarf-5 -fno-stack-protector
<247> DW_AT_language : 29 (C11)
<248> DW_AT_name : (indirect line string, offset: 0xfc):
/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.base/langs2.c
<24c> DW_AT_comp_dir : (indirect line string, offset: 0x0):
/home/vries/gdb_versions/devel/build/gdb/testsuite
<250> DW_AT_low_pc : 0x400502
<258> DW_AT_high_pc : 0x3b
<260> DW_AT_stmt_list : 0x1b4
...
and at 0x1b4:
...
The Directory Table (offset 0x1d6, lines 1, columns 1):
Entry Name
0 (indirect line string, offset: 0x0):
/home/vries/gdb_versions/devel/build/gdb/testsuite
The File Name Table (offset 0x1e0, lines 2, columns 2):
Entry Dir Name
0 0 (indirect line string, offset: 0xfc):
/home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.base/langs2.c
1 0 (indirect line string, offset: 0x13f): langs2.cxx
...
So the difference seems to be that the directory and file entries 0 are
implicit in dwarf-4, and explicit in dwarf-5.
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* [Bug symtab/28108] [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp
2021-07-20 5:18 [Bug symtab/28108] New: [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp vries at gcc dot gnu.org
2021-07-20 5:47 ` [Bug symtab/28108] " vries at gcc dot gnu.org
@ 2021-07-20 11:03 ` vries at gcc dot gnu.org
2023-10-25 14:24 ` [Bug testsuite/28108] " vries at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: vries at gcc dot gnu.org @ 2021-07-20 11:03 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=28108
--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
Posted RFC: https://sourceware.org/pipermail/gdb-patches/2021-July/181031.html
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* [Bug testsuite/28108] [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp
2021-07-20 5:18 [Bug symtab/28108] New: [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp vries at gcc dot gnu.org
2021-07-20 5:47 ` [Bug symtab/28108] " vries at gcc dot gnu.org
2021-07-20 11:03 ` vries at gcc dot gnu.org
@ 2023-10-25 14:24 ` vries at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: vries at gcc dot gnu.org @ 2023-10-25 14:24 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=28108
Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |12.1
Component|symtab |testsuite
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Fixed by commit d8504344d47 ("Fix some failures in langs.exp").
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2021-07-20 5:18 [Bug symtab/28108] New: [gcc-11] FAIL: gdb.base/langs.exp: up to foo in langs.exp vries at gcc dot gnu.org
2021-07-20 5:47 ` [Bug symtab/28108] " vries at gcc dot gnu.org
2021-07-20 11:03 ` vries at gcc dot gnu.org
2023-10-25 14:24 ` [Bug testsuite/28108] " vries at gcc dot gnu.org
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