[Bug c/42799] Variable unexpectedly set to 0 because a scanf()

[adriyetichaves at gmail dot com]

--- Comment #2 from adriyetichaves at gmail dot com  2010-01-19 10:04 
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Same code compiled in other compiler (Turbo C++) works.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42799

[Bug c/42799] Variable unexpectedly set to 0 because a scanf()

[jakub at gcc dot gnu dot org]

--- Comment #3 from jakub at gcc dot gnu dot org  2010-01-19 10:21 ---
This is undefined behavior, scanf is writing int value into an unsigned short
variable, so it of course can overwrite whatever happens to be adjacent to that
var on the stack.
Use %hd instead of %d to write to short/unsigned short vars in scanf format
string, or write to int variable instead.


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jakub at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42799