[devel] Changes to remove gcc warnings (John Bowler)
Certain optional gcc warning flags resulted in warnings in libpng code.
With these changes only -Wconversion and -Wcast-qual cannot be turned on.
Changes are trivial rearrangements of code. -Wconversion is not possible
for pngrutil.c (because of the widespread use of += et al on variables
smaller than (int) or (unsigned int)) and -Wcast-qual is not possible
with pngwio.c and pngwutil.c because the 'write' callback and zlib
compression both fail to declare their input buffers with 'const'.
diff --git a/pngwtran.c b/pngwtran.c
index 066e1e2..1765ef8 100644
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -220,6 +220,9 @@
break;
}
+
+ default:
+ break;
}
row_info->bit_depth = (png_byte)bit_depth;