PP: Fix issue #407; handle empty identifier.
The sequence #define m() int m" creates a token of no length (a string of 0 size). Protect against a string of 0 size as well as the existing protect against a null string.
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4 changed files with 11 additions and 4 deletions
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@ -1,2 +1,5 @@
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#define m#0#
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#if m
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#define n()
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int n"
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