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authorRich Felker <dalias@aerifal.cx>2012-05-09 11:47:06 -0400
committerRich Felker <dalias@aerifal.cx>2012-05-09 11:47:06 -0400
commit37bb3cce4598c19288628e675eaf1cda6e96958f (patch)
tree5a31a0a48fb89d0490997c97d208b10ad9c76e8f /INSTALL
parent0e195dfaa4902a73179f7ab296d47f01d3518ad3 (diff)
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omit declaration of basename wrongly interpreted as prototype in C++
the non-prototype declaration of basename in string.h is an ugly
compromise to avoid breaking 2 types of broken software:

1. programs which assume basename is declared in string.h and thus
would suffer from dangerous pointer-truncation if an implicit
declaration were used.

2. programs which include string.h with _GNU_SOURCE defined but then
declare their own prototype for basename using the incorrect GNU
signature for the function (which would clash with a correct
prototype).

however, since C++ does not have non-prototype declarations and
interprets them as prototypes for a function with no arguments, we
must omit it when compiling C++ code. thankfully, all known broken
apps that suffer from the above issues are written in C, not C++.
Diffstat (limited to 'INSTALL')
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