Bug 2183525
| Summary: | Cannot set breakpoint unless add -gno-statement-frontiers to compiler arguments | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Paulo Andrade <pandrade> |
| Component: | gcc | Assignee: | Marek Polacek <mpolacek> |
| gcc sub component: | system-version | QA Contact: | qe-baseos-tools-bugs |
| Status: | CLOSED UPSTREAM | Docs Contact: | |
| Severity: | medium | ||
| Priority: | unspecified | CC: | ahajkova, fweimer, jakub, ohudlick, sipoyare |
| Version: | 8.7 | Flags: | pm-rhel:
mirror+
|
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-04-04 16:18:06 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
Paulo Andrade
2023-03-31 13:56:29 UTC
Created attachment 1954891 [details]
debuginfo-problem.sh
Reduced:
$ cat main.cc
#include "test.h"
void invokeInline (Message & msg, int param)
{
someInlineFunction (msg, param);
}
int main ()
{
Message msg;
invokeInline (msg, 42);
}
$ cat test.h
struct Message {
int member{35};
};
template<typename T>
void someInlineFunction (T & msg, int value)
{
msg.member += value;
}
$ g++ -Og -g main.cc
$ gdb --nh --batch -ex 'break test.h:9' -ex run ./a.out
No line 9 in file "test.h".
[...]
$ g++ -Og -g main.cc -gno-statement-frontiers
$ gdb --nh --batch -ex 'break test.h:9' -ex run ./a.out
Breakpoint 1 at 0x40113b: file /home/mpolacek/x/trunk/gcc/r/test.h, line 9.
[...]
Started with r255569. I don't know anything about statement frontier notes but saying "No line 9 in file "test.h"" seems confusing at least.
Happens with upstream trunk as well, so I suppose I'll have to take this upstream.
$ diff -up 1.s 2.s --- 1.s 2023-04-03 17:41:07.446108328 -0400 +++ 2.s 2023-04-03 17:41:12.891102304 -0400 @@ -11,7 +11,7 @@ _Z18someInlineFunctionI7MessageEvRT_i: .file 1 "test.h" .loc 1 6 6 view -0 .cfi_startproc - .loc 1 8 15 is_stmt 0 view .LVU1 + .loc 1 8 15 view .LVU1 addl %esi, (%rdi) .loc 1 9 1 view .LVU2 ret @@ -25,16 +25,15 @@ _Z12invokeInlineR7Messagei: .LVL1: .LFB1: .file 2 "main.cc" - .loc 2 4 1 is_stmt 1 view -0 + .loc 2 4 1 view -0 .cfi_startproc .loc 2 4 1 is_stmt 0 view .LVU4 subq $8, %rsp .cfi_def_cfa_offset 16 - .loc 2 5 3 is_stmt 1 view .LVU5 - .loc 2 5 22 is_stmt 0 view .LVU6 + .loc 2 5 22 is_stmt 1 view .LVU5 call _Z18someInlineFunctionI7MessageEvRT_i .LVL2: - .loc 2 6 1 view .LVU7 + .loc 2 6 1 view .LVU6 addq $8, %rsp .cfi_def_cfa_offset 8 ret @@ -45,20 +44,18 @@ _Z12invokeInlineR7Messagei: .type main, @function main: .LFB2: - .loc 2 9 1 is_stmt 1 view -0 + .loc 2 9 1 view -0 .cfi_startproc subq $24, %rsp .cfi_def_cfa_offset 32 - .loc 2 10 3 view .LVU9 - .loc 2 10 11 is_stmt 0 view .LVU10 + .loc 2 10 11 view .LVU8 movl $35, 12(%rsp) - .loc 2 11 3 is_stmt 1 view .LVU11 - .loc 2 11 16 is_stmt 0 view .LVU12 + .loc 2 11 16 view .LVU9 movl $42, %esi leaq 12(%rsp), %rdi call _Z12invokeInlineR7Messagei .LVL3: - .loc 2 12 1 view .LVU13 + .loc 2 12 1 view .LVU10 movl $0, %eax addq $24, %rsp .cfi_def_cfa_offset 8 @@ -499,8 +496,8 @@ main: .Ldebug_loc0: .LVUS0: .uleb128 0 - .uleb128 .LVU7 - .uleb128 .LVU7 + .uleb128 .LVU6 + .uleb128 .LVU6 .uleb128 0 .LLST0: .byte 0x6 @@ -521,8 +518,8 @@ main: .byte 0 .LVUS1: .uleb128 0 - .uleb128 .LVU7 - .uleb128 .LVU7 + .uleb128 .LVU6 + .uleb128 .LVU6 .uleb128 0 .LLST1: .byte 0x6 @@ -578,12 +575,12 @@ main: .section .debug_str,"MS",@progbits,1 .LASF5: .string "param" +.LASF6: + .string "GNU C++17 13.0.1 20230403 (experimental) [master revision bf0a3968f5c:7cead0fcb69:f671b3d79fe1ff729e1a3478e38c4839e439d90b] -mtune=generic -march=x86-64 -g -gno-statement-frontiers -Og" .LASF8: .string "member" .LASF10: .string "invokeInline" -.LASF6: - .string "GNU C++17 13.0.1 20230403 (experimental) [master revision bf0a3968f5c:7cead0fcb69:f671b3d79fe1ff729e1a3478e38c4839e439d90b] -mtune=generic -march=x86-64 -g -Og" .LASF2: .string "value" .LASF11: I've opened an upstream PR: <https://gcc.gnu.org/PR109411> but unfortunately this area isn't developed very actively. So we'll have to see if the upstream resolves this in some way. Therefore, I'm closing this BZ, since I don't expect this to be fixed any time soon. -gno-statement-frontiers is a workaround. |