[libpng16] Make all three "make check" test programs work without READ or WRITE
support. Now "make check" will succeed even if libpng is compiled with
-DPNG_NO_READ or -DPNG_NO_WRITE. The tests performed are reduced, but the
basic reading and writing of a PNG file is always tested by one or more of
the tests.
diff --git a/CHANGES b/CHANGES
index 2f91295..1da41ea 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4184,6 +4184,10 @@
for compressed text chunks).
Consistently use png_memset(), png_memcpy(), and png_memcmp(), except in
pngtest.c and example.c where these macros are not visible.
+ Make all three "make check" test programs work without READ or WRITE support.
+ Now "make check" will succeed even if libpng is compiled with -DPNG_NO_READ
+ or -DPNG_NO_WRITE. The tests performed are reduced, but the basic reading
+ and writing of a PNG file is always tested by one or more of the tests.
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