[binutils-gdb] RISC-V: riscv_set_arch() can fail

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=aa04700525c30e140cdab646b72e31faa1608077

commit aa04700525c30e140cdab646b72e31faa1608077
Author: Jan Beulich <[email protected]>
Date:   Fri Jun 5 11:09:55 2026 +0200

    RISC-V: riscv_set_arch() can fail
    
    In that case neither riscv_rps_as.subset_list nor file_arch_str would be
    set, yet the NULL pointers would be happily passed into functions not
    expecting such.
    
    Reviewed-by: Jiawei <[email protected]>

Diff:
---
 gas/config/tc-riscv.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c
index 75e5542eb9b..22d002a3309 100644
--- a/gas/config/tc-riscv.c
+++ b/gas/config/tc-riscv.c
@@ -345,7 +345,9 @@ riscv_set_arch (const char *s)
     {
       as_bad (_("the architecture string of -march and elf architecture "
 		"attributes cannot be empty"));
-      return;
+      if (file_arch_str != NULL)
+	return;
+      s = DEFAULT_RISCV_ARCH_WITH_EXT;
     }
 
   if (riscv_rps_as.subset_list == NULL)