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* eval.c (scm_force): Assert that x is SCM_NIMP to fix segv when

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(force 9) is tried.  (Thanks to Karl M. Hegbloom.)
This commit is contained in:
Jim Blandy 1998-09-26 09:57:37 +00:00
parent 6925bc4ed9
commit eed6e03e7e
1 changed files with 2 additions and 1 deletions
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3
libguile/eval.c
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@ -3343,7 +3343,8 @@ SCM
scm_force (x) scm_force (x)
SCM x; SCM x;
{ {
SCM_ASSERT ((SCM_TYP16 (x) == scm_tc16_promise), x, SCM_ARG1, s_force); SCM_ASSERT (SCM_NIMP(x) && SCM_TYP16 (x) == scm_tc16_promise,
x, SCM_ARG1, s_force);
if (!((1L << 16) & SCM_CAR (x))) if (!((1L << 16) & SCM_CAR (x)))
{ {
SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL);