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Fix sloppy bound checking in `string-{ref,set!}' with the empty string.

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* libguile/strings.c (scm_string_ref): Add proper range checking for the
  empty string.
  (scm_string_set_x): Likewise.
  Reported by Bill Schottstaedt <bil@ccrma.Stanford.EDU>.

* test-suite/tests/strings.test ("string-ref"): New test prefix.
  ("string-set!")["empty string", "empty string and non-zero index",
  "out of range", "negative index", "regular string"]: New tests.

* NEWS: Update.
This commit is contained in:
Ludovic Courtès 2008-12-02 19:42:39 +01:00
parent 0affe15f63
commit deee086c8d
3 changed files with 66 additions and 4 deletions
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@ -47,6 +47,7 @@ available: Guile is now always configured in "maintainer mode".
dynamic environment of the call to `raise'
** Fix potential deadlock in `make-struct'
** Fix compilation problem with libltdl from Libtool 2.2.x
** Fix sloppy bound checking in `string-{ref,set!}' with the empty string
Changes in 1.8.5 (since 1.8.4)