[Bug lto/104895] lto1: issue with space in library filename

[christophm30 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104895

--- Comment #1 from Christoph Müllner <christophm30 at gmail dot com> ---
Compiling with '-v' shows the following differences:

BAD:
gcc -v -fPIC -flto=auto  -shared -Wl,-soname,"lib'do it'.so" -o "lib'do it'.so"
doit.o
[...]
COLLECT_GCC_OPTIONS='-v' '-fPIC' '-flto=auto' '-shared' '-o' 'lib'\''do
it'\''.so' '-mtune=generic' '-march=x86-64' '-dumpdir' 'lib'\''do it'\''.so.'
[...]
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-fcf-protection=none'
'-v' '-fPIC' '-shared' '-mtune=generic' '-march=x86-64'  
'-fltrans-output-list=/tmp/ccfiSKsT.ltrans.out' '-fwpa=16'
'-fresolution=/tmp/ccOyShqf.res' '-flinker-output=dyn'
[...]
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-fcf-protection=none'
'-v' '-fPIC' '-shared' '-mtune=generic' '-march=x86-64'  
'-fltrans-output-list=/tmp/ccfiSKsT.ltrans.out' '-fwpa=16'
'-fresolution=/tmp/ccOyShqf.res' '-flinker-output=dyn' '-dumpdir' './lib'\''do
it'\''.so.wpa.'
make -f /tmp/ccNUrSeQ.mk -j16 all
[...]
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-fcf-protection=none'
'-v' '-fPIC' '-shared' '-mtune=generic' '-march=x86-64'   '-fltrans' '-o'
'/tmp/ccfiSKsT.ltrans0.ltrans.o' '-dumpdir' './libdo-'
 /usr/libexec/gcc/x86_64-redhat-linux/11/lto1 -quiet -dumpdir ./libdo-
-dumpbase ccfiSKsT.ltrans0.ltrans. -dumpbase-ext . -mtune=generic -march=x86-64
-version -fno-openmp -fno-openacc -fcf-protection=none -fPIC -fltrans it.so.
it.so.ltrans0.ltrans /tmp/ccfiSKsT.ltrans0.o -o /tmp/ccCtIFo1.s
[...]

GOOD:
gcc -v -fPIC -flto  -shared -Wl,-soname,"lib'do it'.so" -o "lib'do it'.so"
doit.o
[...]
COLLECT_GCC_OPTIONS='-v' '-fPIC' '-flto' '-shared' '-o' 'lib'\''do it'\''.so'
'-mtune=generic' '-march=x86-64' '-dumpdir' 'lib'\''do it'\''.so.'
[...]
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-fcf-protection=none'
'-v' '-fPIC' '-shared' '-mtune=generic' '-march=x86-64'  
'-fltrans-output-list=/tmp/ccMA9joX.ltrans.out' '-fwpa'
'-fresolution=/tmp/cceTYxPV.res' '-flinker-output=dyn'
[...]
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-fcf-protection=none'
'-v' '-fPIC' '-shared' '-mtune=generic' '-march=x86-64'  
'-fltrans-output-list=/tmp/ccMA9joX.ltrans.out' '-fwpa'
'-fresolution=/tmp/cceTYxPV.res' '-flinker-output=dyn' '-dumpdir' './lib'\''do
it'\''.so.wpa.'
[...]
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-fcf-protection=none'
'-v' '-fPIC' '-shared' '-mtune=generic' '-march=x86-64'   '-fltrans' '-o'
'/tmp/ccMA9joX.ltrans0.ltrans.o'
 /usr/libexec/gcc/x86_64-redhat-linux/11/lto1 -quiet -dumpbase ./lib'do
it'.so.ltrans0.ltrans -mtune=generic -march=x86-64 -version -fno-openmp
-fno-openacc -fcf-protection=none -fPIC -fltrans @/tmp/ccpufIq0 -o
/tmp/ccyVUMgZ.s

The first three differences look ok:
In the good case we have '-fwpa', and in the base case '-fwpa=16', which looks
sane.

In the last diff we can see a wrong behaviour:

In the good case we have:
* '-dumpbase ./lib'do it'.so.ltrans0.ltrans', and
* '-fltrans it.so. it.so.ltrans0.ltrans /tmp/ccfiSKsT.ltrans0.o'

In the bad case we have:
* '-dumpdir ./libdo- -dumpbase ccfiSKsT.ltrans0.ltrans. -dumpbase-ext .'
* '-fltrans @/tmp/ccpufIq0 -o /tmp/ccyVUMgZ.s'