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[libpng16] Revert recent pngvalid.c changes and define FE_DIVBYZERO, etc.,

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if not already defined.
This commit is contained in:
Glenn Randers-Pehrson
2014-09-18 16:41:40 -05:00
parent 77145bf678
commit 551019baf6
3 changed files with 23 additions and 15 deletions
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32
contrib/libtests/pngvalid.c
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@@ -1,7 +1,7 @@
/* pngvalid.c - validate libpng by constructing then reading png files.
*
* Last changed in libpng 1.6.10 [March 6, 2014]
* Last changed in libpng 1.6.14 [(PENDING RELEASE)]
* Copyright (c) 2014 Glenn Randers-Pehrson
* Written by John Cunningham Bowler
*
@@ -30,6 +30,20 @@
# include <config.h>
#endif
#ifdef HAVE_FEENABLEEXCEPT /* from config.h, if included */
# include <fenv.h>
#endif
#ifndef FE_DIVBYZERO
#define FE_DIVBYZERO 0
#endif
#ifndef FE_INVALID
#define FE_INVALID 0
#endif
#ifndef FE_OVERFLOW
#define FE_OVERFLOW 0
#endif
/* Define the following to use this test against your installed libpng, rather
* than the one being built here:
*/
@@ -39,13 +53,6 @@
# include "../../png.h"
#endif
#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
# ifdef HAVE_FEENABLEEXCEPT /* from config.h, if included */
# include <fenv.h>
# endif
#endif
#ifdef PNG_ZLIB_HEADER
# include PNG_ZLIB_HEADER
#else
@@ -9979,11 +9986,9 @@ static void signal_handler(int signum)
pos = safecat(msg, sizeof msg, pos, "abort");
break;
#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
case SIGFPE:
pos = safecat(msg, sizeof msg, pos, "floating point exception");
break;
#endif
case SIGILL:
pos = safecat(msg, sizeof msg, pos, "illegal instruction");
@@ -10049,21 +10054,18 @@ int main(int argc, char **argv)
/* Add appropriate signal handlers, just the ANSI specified ones: */
signal(SIGABRT, signal_handler);
signal(SIGFPE, signal_handler);
signal(SIGILL, signal_handler);
signal(SIGINT, signal_handler);
signal(SIGSEGV, signal_handler);
signal(SIGTERM, signal_handler);
#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
signal(SIGFPE, signal_handler);
# ifdef HAVE_FEENABLEEXCEPT
#ifdef HAVE_FEENABLEEXCEPT
/* Only required to enable FP exceptions on platforms where they start off
* disabled; this is not necessary but if it is not done pngvalid will likely
* end up ignoring FP conditions that other platforms fault.
*/
feenableexcept(FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW);
# endif
#endif
modifier_init(&pm);