*** empty log message ***

diff --git a/libguile/ChangeLog b/libguile/ChangeLog
index 258c3d9..e95de82 100644 (file)
--- a/libguile/ChangeLog
+++ b/libguile/ChangeLog
@@ -1,3 +1,37 @@
+Wed Dec 18 14:57:57 1996  Jim Blandy  <jimb@floss.cyclic.com>
+
+       Give GCC more control flow information, so it can be sure that
+       variables aren't used uninitialized.
+       * error.h (scm_error, scm_syserror, scm_syserror_msg,
+       scm_sysmissing, scm_num_overflow, scm_out_of_range,
+       scm_wrong_num_args, scm_wrong_type_arg, scm_memory_error,
+       scm_misc_error): Tell GCC that these functions never return.
+       * struct.c (scm_struct_ref, scm_struct_set_x): If we can't figure
+       out the field type, call abort if SCM_ASSERT returns, to placate
+       the optimizer.
+       * stacks.c (scm_make_stack, scm_last_stack_frame): abort if
+       scm_wta ever returns.  We can't handle this case anyway, and this
+       gives the optimizer more information.
+       * unif.c (scm_uniform_vector_ref, scm_array_set_x): Abort if
+       scm_wta ever returns.
+
+       In some cases, the code is fine, but GCC isn't smart enough to
+       figure that out; this usually happens when one variable is only
+       initialized and used when a particular condition holds true, and
+       we know that condition will never change within a given invocation
+       of the function.  In this case, we simply initialize the variables
+       to placate the compiler, hopefully to a value which will cause a
+       crash if it is ever actually used.
+       * print.c (scm_iprin1): Initialize mw_pos.
+       * read.c (scm_lreadrecparen): Initialize tl2, ans2.
+       * throw.c (scm_ithrow): Initialize dynpair.
+       * unif.c (scm_uniform_vector_ref): Initialize cra.
+       * struct.c (init_struct): Initialize prot.
+       * mbstrings.c (scm_print_mb_symbol): Initialize mw_pos and inc.
+
+       * strports.c (scm_eval_0str): Don't return uninitialized garbage
+       if EXPR contains no expressions.
+
 Wed Dec 18 11:43:22 1996  Jim Blandy  <jimb@totoro.cyclic.com>
 
        * eval.c, debug.h: Revert changes of Dec 16 and Nov 21.  They