https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87793
Bug ID: 87793
Summary: GCC reports error when compiling with "-fpic -Os -g"
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: bmeng.cn at gmail dot com
Target Milestone: ---
Created attachment 44921
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44921&action=edit
minimal test case (test.c) and the preprocessed file (test.i)
# Command line to call compiler
$ /share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/i386-linux-gcc -march=i386
-m32 -c test.c -o test.o -fpic -Os -g --save-temps -v
# Output
Using built-in specs.
COLLECT_GCC=/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/i386-linux-gcc
Target: i386-linux
Configured with: /home/arnd/git/gcc/configure --target=i386-linux
--enable-targets=all
--prefix=/home/arnd/cross/x86_64/gcc-8.1.0-nolibc/i386-linux
--enable-languages=c --without-headers --disable-bootstrap --disable-nls
--disable-threads --disable-shared --disable-libmudflap --disable-libssp
--disable-libgomp --disable-decimal-float --disable-libquadmath
--disable-libatomic --disable-libcc1 --disable-libmpx --enable-checking=release
: (reconfigured) /home/arnd/git/gcc/configure --target=i386-linux
--enable-targets=all
--prefix=/home/arnd/cross/x86_64/gcc-8.1.0-nolibc/i386-linux
--enable-languages=c --without-headers --disable-bootstrap --disable-nls
--disable-threads --disable-shared --disable-libmudflap --disable-libssp
--disable-libgomp --disable-decimal-float --disable-libquadmath
--disable-libatomic --disable-libcc1 --disable-libmpx --enable-checking=release
Thread model: single
gcc version 8.1.0 (GCC)
COLLECT_GCC_OPTIONS='-march=i386' '-m32' '-c' '-o' 'test.o' '-fpic' '-Os' '-g'
'-save-temps' '-v'
/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../libexec/gcc/i386-linux/8.1.0/cc1
-E -quiet -v -iprefix
/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/8.1.0/
test.c -march=i386 -m32 -fpic -g -fworking-directory -Os -fpch-preprocess -o
test.i
ignoring nonexistent directory
"/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/8.1.0/../../../../i386-linux/sys-include"
ignoring nonexistent directory
"/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/8.1.0/../../../../i386-linux/include"
ignoring duplicate directory
"/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/../../lib/gcc/i386-linux/8.1.0/include"
ignoring duplicate directory
"/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/../../lib/gcc/i386-linux/8.1.0/include-fixed"
ignoring nonexistent directory
"/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/../../lib/gcc/i386-linux/8.1.0/../../../../i386-linux/sys-include"
ignoring nonexistent directory
"/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/../../lib/gcc/i386-linux/8.1.0/../../../../i386-linux/include"
#include "..." search starts here:
#include <...> search starts here:
/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/8.1.0/include
/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/8.1.0/include-fixed
End of search list.
COLLECT_GCC_OPTIONS='-march=i386' '-m32' '-c' '-o' 'test.o' '-fpic' '-Os' '-g'
'-save-temps' '-v'
/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../libexec/gcc/i386-linux/8.1.0/cc1
-fpreprocessed test.i -quiet -dumpbase test.c -march=i386 -m32 -auxbase-strip
test.o -g -Os -version -fpic -o test.s
GNU C17 (GCC) version 8.1.0 (i386-linux)
compiled by GNU C version 5.4.1 20170519, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C17 (GCC) version 8.1.0 (i386-linux)
compiled by GNU C version 5.4.1 20170519, GMP version 6.1.0, MPFR
version 3.1.4, MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 5b6be85f431a859ca20ca7e588057ee0
COLLECT_GCC_OPTIONS='-march=i386' '-m32' '-c' '-o' 'test.o' '-fpic' '-Os' '-g'
'-save-temps' '-v'
/share/toolchains/gcc-8.1.0-nolibc/i386-linux/bin/../lib/gcc/i386-linux/8.1.0/../../../../i386-linux/bin/as
-v --32 -o test.o test.s
GNU assembler version 2.30 (i386-linux) using BFD version (GNU Binutils) 2.30
test.s: Assembler messages:
test.s:715: Error: junk at end of line, first unrecognized character is `@'
test.s:760: Error: junk at end of line, first unrecognized character is `@'
test.s:715: Error: can't resolve `end.1561' {.u_boot_list_2_fit_loadable_3
section} - `start.1558' {.u_boot_list_2_fit_loadable_1 section}
test.s:760: Error: can't resolve `end.1561' {.u_boot_list_2_fit_loadable_3
section} - `start.1558' {.u_boot_list_2_fit_loadable_1 section}
# Workaround
Removing -fpic or -Os or -g will make the compilation succeed.
GCC 7.3.0 does not have this issue with the same compiler options. Looks a
regression issue introduced in GCC 8.1.0 (?)
