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Bison-1.28 No Error Bug
From: |
Hans Aberg |
Subject: |
Bison-1.28 No Error Bug |
Date: |
Fri, 29 Sep 2000 23:25:53 +0200 |
Using the compile Bison-1.28 for MacOS using the Metrowerks CW Pro 5
C-compiler, I have noticed it Bison produces some funny error messages. For
example, if Bison cannot find the startup file "<name>.y", one gets the
somewhat confusing error message
Bison: <name>.y: No Error
The reason, in this case, is that tryopen() uses perror() in connection
with a function fprintf() that does not set errno. When the program starts,
errno is set to 0, meaning "No Error", and remains so until a function
alters it.
Hans Aberg
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