[PATCH] Fortran: improve checking of procedures passed as actual argument [PR50377]

[Andreas Schwab]

This breaks bootstrap:

make[3]: Entering directory '/opt/gcc/gcc-20251011/Build/gcc'
/opt/gcc/gcc-20251011/Build/./prev-gcc/xg++ -B/opt/gcc/gcc-20251011/Build/./prev-gcc/ -B/usr/aarch64-suse-linux/bin/ -nostdinc++ -B/opt/gcc/gcc-20251011/Build/prev-aarch64-suse-linux/libstdc++-v3/src/.libs -B/opt/gcc/gcc-20251011/Build/prev-aarch64-suse-linux/libstdc++-v3/libsupc++/.libs  -I/opt/gcc/gcc-20251011/Build/prev-aarch64-suse-linux/libstdc++-v3/include/aarch64-suse-linux  -I/opt/gcc/gcc-20251011/Build/prev-aarch64-suse-linux/libstdc++-v3/include  -I/opt/gcc/gcc-20251011/libstdc++-v3/libsupc++ -L/opt/gcc/gcc-20251011/Build/prev-aarch64-suse-linux/libstdc++-v3/src/.libs -L/opt/gcc/gcc-20251011/Build/prev-aarch64-suse-linux/libstdc++-v3/libsupc++/.libs  -fno-PIE -c  -DIN_GCC_FRONTEND -g -O2 -fno-checking -gtoggle -DIN_GCC    -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-error=narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror  -DHAVE_CONFIG_H -fno-PIE -I. -Ifortran -I../../gcc -I../../gcc/fortran -I../../gcc/../include  -I../../gcc/../libcpp/include -I../../gcc/../libcody  -I../../gcc/../libdecnumber -I../../gcc/../libdecnumber/bid -I../libdecnumber -I../../gcc/../libbacktrace   -o fortran/resolve.o -MT fortran/resolve.o -MMD -MP -MF fortran/.deps/resolve.TPo ../../gcc/fortran/resolve.cc
../../gcc/fortran/resolve.cc: In function 'bool resolve_actual_arglist(gfc_actual_arglist*, procedure_type, bool)':
../../gcc/fortran/resolve.cc:2301:31: error: 'sym' may be used uninitialized [-Werror=maybe-uninitialized]
 2301 |           && sym->attr.flavor == FL_PROCEDURE
      |              ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
../../gcc/fortran/resolve.cc:2033:15: note: 'sym' was declared here
 2033 |   gfc_symbol *sym;
      |               ^~~
cc1plus: all warnings being treated as errors
make[3]: *** [Makefile:1216: fortran/resolve.o] Error 1
make[3]: Leaving directory '/opt/gcc/gcc-20251011/Build/gcc'

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."