Bug 376455 – sys-devel/gdb build broken by CFLAGS='-finline-functions -ftracer'

• Product: Gentoo Linux
• Status: RESOLVED DUPLICATE

[Description Nick Wallingford 2011-07-26 09:24:07 UTC]

Using both '-finline-functions' and '-ftracer' at the same time prevents sys-devel/gdb-7.2 from compiling; disabling either CFLAG will enable gdb to compile.

Reproducible: Always

Steps to Reproduce:
1. Enable both -finline-functions and -ftracer CFLAGS in either /etc/make.conf or /etc/portage/env/sys-devel/gdb
2. 'emerge =sys-devel/gdb-7.2'

Actual Results:  
error messages:

x86_64-pc-linux-gnu-gcc -c  -Wall -O3 -march=native -ftracer -pipe -ggdb    -I. -I. -
I./../common -I./../regformats -I./../../include linux-low.c -DUSE_THREAD_DB
x86_64-pc-linux-gnu-gcc -c -Wall -O3 -march=native -ftracer -pipe -ggdb    -I. -I. -I
./../common -I./../regformats -I./../../include linux-x86-low.c
linux-low.c: In function 'sigchld_handler':
linux-low.c:4757:11: warning: ignoring return value of 'write', declared with attribu
te warn_unused_result
linux-x86-low.c: Assembler messages:
linux-x86-low.c:2225: Error: symbol `start_i386_goto' is already defined
linux-x86-low.c:2227: Error: symbol `end_i386_goto' is already defined
linux-x86-low.c:2207: Error: symbol `start_i386_if_goto' is already defined
linux-x86-low.c:2214: Error: symbol `end_i386_if_goto' is already defined
linux-x86-low.c:1935: Error: symbol `start_amd64_void_call_2_a' is already defined
linux-x86-low.c:1937: Error: symbol `end_amd64_void_call_2_a' is already defined
linux-x86-low.c:1739: Error: symbol `start_amd64_goto' is already defined
linux-x86-low.c:1740: Error: symbol `end_amd64_goto' is already defined
linux-x86-low.c:1725: Error: symbol `start_amd64_if_goto' is already defined
linux-x86-low.c:1729: Error: symbol `end_amd64_if_goto' is already defined
x86_64-pc-linux-gnu-gcc -c -Wall -O3 -march=native -ftracer -pipe -ggdb    -I. -I. -I
./../common -I./../regformats -I./../../include i386-low.c
make[4]: *** [linux-x86-low.o] Error 1
make[4]: *** Waiting for unfinished jobs....


Expected Results:  
Compilation succeeds.

build log: http://pastebin.com/GHiYjGEr
emerge --info: http://pastebin.com/xXDp6kcv

Note that in this case, -finline-functions is enabled by -O3.
-ftracer is not enabled by any -O level.

Compilation succeeds with '-O3 -fno-inline-functions -ftracer'.

[Comment 1 Pacho Ramos 2011-07-26 11:01:41 UTC]

Please attach that files directly to the bug report instead of using external resources that can disappear in the future.

[Comment 2 Nick Wallingford 2011-07-26 11:06:55 UTC]

Created attachment 281039 [details]
Complete build log

[Comment 3 Nick Wallingford 2011-07-26 11:08:30 UTC]

Created attachment 281041 [details]
emerge --info

[Comment 4 Pacho Ramos 2011-07-26 17:59:11 UTC]

OK, thanks, anyway, you shouldn't use so aggressive CFLAGS as it can cause problems with many other apps

[Comment 5 Ryan Hill (RETIRED) 2013-08-12 16:51:03 UTC]

*** Bug 445132 has been marked as a duplicate of this bug. ***

[Comment 6 SpanKY 2013-09-05 09:20:28 UTC]

more in-depth analysis can be found in the duped bug 445132

[Comment 7 Sergei Trofimovich (RETIRED) 2019-01-27 11:25:16 UTC]

*** This bug has been marked as a duplicate of bug 660836 ***