https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97783
--- Comment #1 from Quentin Armitage <quentin at armitage dot org.uk> ---
I don't know if the following addition output from gcc -v when compiling
glob_err.c is useful:
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O1' '-D' 'TEST1' '-o' 'glob_err'
'-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-redhat-linux/10/cc1 -E -quiet -v -D TEST1 glob_err.c
-mtune=generic -march=x86-64 -O1 -fpch-preprocess -o glob_err.i
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-redhat-linux/10/include-fixed"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-redhat-linux/10/../../../../x86_64-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-redhat-linux/10/include
/usr/local/include
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O1' '-D' 'TEST1' '-o' 'glob_err'
'-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-redhat-linux/10/cc1 -fpreprocessed glob_err.i -quiet
-dumpbase glob_err.c -mtune=generic -march=x86-64 -auxbase glob_err -O1
-version -o glob_err.s
GNU C17 (GCC) version 10.2.1 20201016 (Red Hat 10.2.1-6) (x86_64-redhat-linux)
compiled by GNU C version 10.2.1 20201016 (Red Hat 10.2.1-6), GMP
version 6.2.0, MPFR version 4.1.0, MPC version 1.1.0, isl version
isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C17 (GCC) version 10.2.1 20201016 (Red Hat 10.2.1-6) (x86_64-redhat-linux)
compiled by GNU C version 10.2.1 20201016 (Red Hat 10.2.1-6), GMP
version 6.2.0, MPFR version 4.1.0, MPC version 1.1.0, isl version
isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: abdc7099d3f7dcdac32d7a56c3312bc2
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O1' '-D' 'TEST1' '-o' 'glob_err'
'-mtune=generic' '-march=x86-64'
as -v --64 -o glob_err.o glob_err.s
GNU assembler version 2.35 (x86_64-redhat-linux) using BFD version version
2.35-14.fc33
COMPILER_PATH=/usr/libexec/gcc/x86_64-redhat-linux/10/:/usr/libexec/gcc/x86_64-redhat-linux/10/:/usr/libexec/gcc/x86_64-redhat-linux/:/usr/lib/gcc/x86_64-redhat-linux/10/:/usr/lib/gcc/x86_64-redhat-linux/
LIBRARY_PATH=/usr/lib/gcc/x86_64-redhat-linux/10/:/usr/lib/gcc/x86_64-redhat-linux/10/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/lib/gcc/x86_64-redhat-linux/10/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O1' '-D' 'TEST1' '-o' 'glob_err'
'-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-redhat-linux/10/collect2 -plugin
/usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so
-plugin-opt=/usr/libexec/gcc/x86_64-redhat-linux/10/lto-wrapper
-plugin-opt=-fresolution=glob_err.res -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --build-id
--no-add-needed --eh-frame-hdr --hash-style=gnu -m elf_x86_64 -dynamic-linker
/lib64/ld-linux-x86-64.so.2 -o glob_err
/usr/lib/gcc/x86_64-redhat-linux/10/../../../../lib64/crt1.o
/usr/lib/gcc/x86_64-redhat-linux/10/../../../../lib64/crti.o
/usr/lib/gcc/x86_64-redhat-linux/10/crtbegin.o
-L/usr/lib/gcc/x86_64-redhat-linux/10
-L/usr/lib/gcc/x86_64-redhat-linux/10/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/10/../../.. glob_err.o
-lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state
--as-needed -lgcc_s --pop-state /usr/lib/gcc/x86_64-redhat-linux/10/crtend.o
/usr/lib/gcc/x86_64-redhat-linux/10/../../../../lib64/crtn.o
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O1' '-D' 'TEST1' '-o' 'glob_err'
'-mtune=generic' '-march=x86-64'
