(Fbyte_code): For relative gotos, force signed arithmetic.

diff --git a/src/bytecode.c b/src/bytecode.c
index 3221970ccac36ed73955fdb7a66cbaa3afa422e6..4fb6d86bb6999f7abf48ee9bf0ed58946418b179 100644 (file)
--- a/src/bytecode.c
+++ b/src/bytecode.c
@@ -475,14 +475,14 @@ If the third argument is incorrect, Emacs may crash.")
 
        case BRgoto:
          QUIT;
-         pc += *pc - 127;
+         pc += (int) *pc - 127;
          break;
 
        case BRgotoifnil:
          if (NILP (POP))
            {
              QUIT;
-             pc += *pc - 128;
+             pc += (int) *pc - 128;
            }
          pc++;
          break;
@@ -491,7 +491,7 @@ If the third argument is incorrect, Emacs may crash.")
          if (!NILP (POP))
            {
              QUIT;
-             pc += *pc - 128;
+             pc += (int) *pc - 128;
            }
          pc++;
          break;