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dereference-pointer: check for null pointer.

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* libguile/foreign.c (scm_dereference_pointer): Check for attempts to
  dereference a null pointer.

* test-suite/tests/foreign.test ("null pointer"): Add test.
This commit is contained in:
Mark H Weaver 2013-08-09 18:23:56 -04:00
parent fa102e73c3
commit b7c1b60c83
2 changed files with 11 additions and 1 deletions
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4
test-suite/tests/foreign.test
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@ -51,6 +51,10 @@
(pass-if "null-pointer? %null-pointer"
(null-pointer? %null-pointer))
(pass-if-exception "dereference-pointer %null-pointer"
exception:null-pointer-error
(dereference-pointer %null-pointer))
(pass-if-exception "pointer->bytevector %null-pointer"
exception:null-pointer-error
(pointer->bytevector %null-pointer 7)))