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[master] Changes to remove gcc warnings (John Bowler)

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Glenn Randers-Pehrson
2010-11-21 14:02:16 -06:00
parent c03a949a0d
commit 2922c07e67
8 changed files with 70 additions and 4 deletions
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@@ -2713,6 +2713,14 @@ version 1.4.5beta06 [November 21, 2010]
is not defined).
Make the "png_get_uint_16" macro return a png_uint_32 in libpng-1.4 for API
compatibility.
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'.
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