From 2e02cdfb5fb37731530f12e5f4cbe5975d3506cf Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Thu, 23 Jan 2025 16:29:35 +0100
Subject: [PATCH 1/4] Fix NULL arithmetic in System V shared memory emulation

For the first child process execution, `TWG(shm)` is `NULL`; we need to
catch that to avoid undefined behavior.

Closes GH-17550.
---
 NEWS              |  2 ++
 TSRM/tsrm_win32.c | 24 +++++++++++++-----------
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/NEWS b/NEWS
index c4fd35de80641..fdf7e1a27587a 100644
--- a/NEWS
+++ b/NEWS
@@ -15,6 +15,8 @@ PHP                                                                        NEWS
   . Fixed bug GH-17408 (Assertion failure Zend/zend_exceptions.c).
     (nielsdos, ilutov)
   . Fix may_have_extra_named_args flag for ZEND_AST_UNPACK. (nielsdos)
+  . Fix NULL arithmetic in System V shared memory emulation for Windows. (cmb)
+
 
 - DOM:
   . Fixed bug GH-17500 (Segfault with requesting nodeName on nameless doctype).
diff --git a/TSRM/tsrm_win32.c b/TSRM/tsrm_win32.c
index da0ca7f005f58..4550715d5ce71 100644
--- a/TSRM/tsrm_win32.c
+++ b/TSRM/tsrm_win32.c
@@ -402,19 +402,21 @@ static shm_pair *shm_get(key_t key, void *addr)
 	shm_pair *ptr;
 	shm_pair *newptr;
 
-	for (ptr = TWG(shm); ptr < (TWG(shm) + TWG(shm_size)); ptr++) {
-		if (!ptr->descriptor) {
-			continue;
-		}
-		if (!addr && ptr->descriptor->shm_perm.key == key) {
-			break;
-		} else if (ptr->addr == addr) {
-			break;
+	if (TWG(shm) != NULL) {
+		for (ptr = TWG(shm); ptr < (TWG(shm) + TWG(shm_size)); ptr++) {
+			if (!ptr->descriptor) {
+				continue;
+			}
+			if (!addr && ptr->descriptor->shm_perm.key == key) {
+				break;
+			} else if (ptr->addr == addr) {
+				break;
+			}
 		}
-	}
 
-	if (ptr < (TWG(shm) + TWG(shm_size))) {
-		return ptr;
+		if (ptr < (TWG(shm) + TWG(shm_size))) {
+			return ptr;
+		}
 	}
 
 	newptr = (shm_pair*)realloc((void*)TWG(shm), (TWG(shm_size)+1)*sizeof(shm_pair));

From f698c623612f978e6040b74b9d81330a18eba82e Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Mon, 6 Jan 2025 19:05:57 +0100
Subject: [PATCH 2/4] Fix bug 64823: ZTS GD fails to to find system TrueType
 font
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

First, the `$fontfile` parameter actually supports a semicolon
delimited list of fonts (as documented[1]); thus passing the full
string to `VCWD_REALPATH()` or `php_check_open_basedir()` makes no
sense; we could pass the individual parts, but …

Second, libgd uses an elaborate font detection.  There is a hard-
coded `DEFAULT_PATH` which can be overridden by the environment
variable `GDFONTPATH`.  Semantics are like the `PATH` environment
variable.  If `DEFAULT_PATH` was still exposed (it is no longer as of
libgd 2.1.0[2]), we could take that into account, but …

External libgd can be configured with font-config support, so font
aliases and even lookup patterns are supported.  There is no way to
cater to that upfront.

Thus, we no longer interfere with libgd's font lookup.  Checking the
realpath was already doubtful (we didn't even use the resolved path).
Lifting the open_basedir restriction is a bit more delicate, but the
manual still states that open_basedir would not apply, and more
relevant, not much harm can be done, because libgd only passes the
found font to `FT_New_Face()` which likely fails for any non font files
without any error which could reveal sensitive information.  And the
font file is never written.

It should be noted that this solves lookup of system fonts, does not
change the behavior for absolute font paths, but still does not resolve
issues with relative paths to font files in ZTS environments using
external libgd (our bundled libgd has a workaround for that).  This
particular issue cannot be solved, so users of ZTS builds still need to
add `realpath(.)` to the `GDFONTPATH` as documented in the manual (or
pass absolute paths as `$fontfile`).

[1] <https://www.php.net/imagettftext>
[2] <https://github.com/libgd/libgd/commit/2a921c80fbdd1d684f32bf763c26e024052314e6>

Closes GH-17366.
---
 NEWS        |  1 +
 ext/gd/gd.c | 12 ------------
 2 files changed, 1 insertion(+), 12 deletions(-)

diff --git a/NEWS b/NEWS
index 7807625ac34b6..181f254923790 100644
--- a/NEWS
+++ b/NEWS
@@ -35,6 +35,7 @@ PHP                                                                        NEWS
 - GD:
   . Fixed bug #68629 (Transparent artifacts when using imagerotate). (pierre,
     cmb)
+  . Fixed bug #64823 (ZTS GD fails to to find system TrueType font). (cmb)
 
 - Intl:
   . Bumped ICU requirement to ICU >= 57.1. (cmb)
diff --git a/ext/gd/gd.c b/ext/gd/gd.c
index 17bda3d65e2dc..c5f7b65ce4c8b 100644
--- a/ext/gd/gd.c
+++ b/ext/gd/gd.c
@@ -3374,18 +3374,6 @@ static void php_imagettftext_common(INTERNAL_FUNCTION_PARAMETERS, int mode)
 		}
 	}
 
-#ifdef VIRTUAL_DIR
-	{
-		char tmp_font_path[MAXPATHLEN];
-
-		if (!VCWD_REALPATH(fontname, tmp_font_path)) {
-			fontname = NULL;
-		}
-	}
-#endif /* VIRTUAL_DIR */
-
-	PHP_GD_CHECK_OPEN_BASEDIR(fontname, "Invalid font filename");
-
 	// libgd note: Those should return const char * ideally, but backward compatibility ..
 	if (EXT) {
 		error = gdImageStringFTEx(im, brect, col, fontname, ptsize, angle, x, y, str, &strex);

From 5890761ef92b0b73a98dfaa700f339feb15be9f7 Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Sat, 25 Jan 2025 19:48:38 +0100
Subject: [PATCH 3/4] Overhaul GD test helpers and affected tests (GH-17309)

* Use type declarations instead of doc-block annotations

* Inline the terrible get_rgb() function

* Always traverse pixels in Z order

libgd stores the pixel as an array of rows, so we should use row-major-
order traversal to improve caching.

* Add assertions to avoid misuse of the functions

The assertion regarding the image dimensions won't break any tests, and
we had it already as a comment.

However, asserting that the images are truecolor images is important
for `calc_image_dissimilarity()` which otherwise would calculate
nonsense, and not unreasonable for `test_image_equals_image()` which
otherwise is overspecified (for our purposes, it doesn't matter which
palette entry a pixel refers to, but rather whether the actual colors
referred by a palette color match).

Since the truecolor assertions break two tests, we fix these by
converting to truecolor.  That should likely be backported to lower
branches.

* Drop implicit conversion to truecolor

Conversion to truecolor is a relatively expensive operation, and as
such should not be implicit; instead test authors are encouraged to use
truecolor images in the first place where possible, or to even find
better ways to verify expectations than doing a full image comparison.

* Merge similarity.inc into func.inc

There is no particular reason to have a separate file for similarity
comparisons.

* Simplify bug43475.phpt and bug64641.phpt

`calc_image_dissimilarity()` calculates the sum of the euclidean
distance of the RGB channels of all pixels.  The euclidean distance is
either zero or greater than or equal to one (but never in ]0, 1[).  The
sum of these values also has this property, so it doesn't make sense to
check for less than 1e-5.  Thus we just call `test_image_equals_file()`
instead.

* Replace calc_image_dissimilarity() with the well-known mse()

`calc_image_dissimilarity()` has the drawback that it did sum up the
pixel differences, so for large images the result could be way larger
than for small images.  It also has the drawback that it likely is not
as well understood as the mean squared error.  Thus we replace it with
the latter, and calculate the mean squared error of the individual RGB
channels (to be precise).  The result is always in range 0..255**2 what
makes reasoning about thresholds easier.
---
 ext/gd/tests/avif_decode_encode.phpt          |   8 +--
 ext/gd/tests/bug43475.phpt                    |   8 +--
 ext/gd/tests/bug43475.png                     | Bin 4697 -> 11430 bytes
 ext/gd/tests/bug52070.phpt                    |   1 +
 ext/gd/tests/bug52070.png                     | Bin 2223 -> 8724 bytes
 ext/gd/tests/bug64641.phpt                    |  14 +---
 ext/gd/tests/bug72913.phpt                    |  14 +++-
 ext/gd/tests/bug72913.png                     | Bin 147 -> 0 bytes
 ext/gd/tests/func.inc                         |  47 ++++++-------
 ext/gd/tests/gd276.phpt                       |   2 +
 ext/gd/tests/imagebmp_basic.phpt              |   2 +-
 ext/gd/tests/imagebmp_basic.png               | Bin 141 -> 584 bytes
 ext/gd/tests/imagecolorset_basic.phpt         |   1 +
 ext/gd/tests/imagecolorset_basic.png          | Bin 99 -> 434 bytes
 ext/gd/tests/imagecreatefromstring_bmp.phpt   |   2 +-
 ext/gd/tests/imagecreatefromstring_bmp.png    | Bin 126 -> 134 bytes
 .../tests/imagegammacorrect_variation1.phpt   |   2 +-
 ext/gd/tests/imagegammacorrect_variation1.png | Bin 199 -> 686 bytes
 .../tests/imagegammacorrect_variation2.phpt   |   3 +
 .../tests/imagetruecolortopalette_basic.phpt  |   2 +-
 .../tests/imagetruecolortopalette_basic.png   | Bin 208 -> 709 bytes
 ext/gd/tests/similarity.inc                   |  64 ------------------
 .../tests/test_image_equals_file_palette.phpt |   3 +
 ext/gd/tests/webp_basic.phpt                  |   6 +-
 24 files changed, 61 insertions(+), 118 deletions(-)
 delete mode 100644 ext/gd/tests/bug72913.png
 delete mode 100644 ext/gd/tests/similarity.inc

diff --git a/ext/gd/tests/avif_decode_encode.phpt b/ext/gd/tests/avif_decode_encode.phpt
index cb7f1ce95a67c..054eb52467637 100644
--- a/ext/gd/tests/avif_decode_encode.phpt
+++ b/ext/gd/tests/avif_decode_encode.phpt
@@ -14,7 +14,7 @@ gd
 --FILE--
 <?php
 
-    require_once __DIR__ . '/similarity.inc';
+    require_once __DIR__ . '/func.inc';
 
     $infile = __DIR__  . '/girl.avif';
     $outfile = __DIR__  . '/test.avif';
@@ -58,8 +58,8 @@ gd
 
     // Note we could also forgive a certain number of pixel differences.
     // With the current test image, we just didn't need to.
-    echo 'How many pixels are different in the two images? ';
-    print_r(calc_image_dissimilarity($img, $img_from_avif));
+    echo 'What is the mean squared error of the two images? ',
+        mse($img, $img_from_avif);
 
     unlink($outfile);
 
@@ -79,4 +79,4 @@ Encoding AVIF with illegal quality: imageavif(): Argument #3 ($quality) must be
 Encoding AVIF with illegal speed: imageavif(): Argument #4 ($speed) must be between -1 and 10
 Encoding AVIF losslessly... ok
 Decoding the AVIF we just wrote...
-How many pixels are different in the two images? 0
+What is the mean squared error of the two images? 0
diff --git a/ext/gd/tests/bug43475.phpt b/ext/gd/tests/bug43475.phpt
index 454d2daad0f1a..4d3db399a30e2 100644
--- a/ext/gd/tests/bug43475.phpt
+++ b/ext/gd/tests/bug43475.phpt
@@ -13,7 +13,7 @@ gd
 ?>
 --FILE--
 <?php
-require_once __DIR__ . '/similarity.inc';
+require_once __DIR__ . '/func.inc';
 
 function setStyleAndThickness($im, $color, $thickness)
 {
@@ -59,8 +59,8 @@ imageline($im, 200, 100, 700, 100, IMG_COLOR_STYLED);
 imageline($im, 700, 100, 700, 600, IMG_COLOR_STYLED);
 imageline($im, 700, 600, 200, 100, IMG_COLOR_STYLED);
 
-$ex = imagecreatefrompng(__DIR__ . '/bug43475.png');
-var_dump(calc_image_dissimilarity($ex, $im) < 1e-5);
+imagepalettetotruecolor($im);
+test_image_equals_file(__DIR__ . '/bug43475.png', $im);
 ?>
 --EXPECT--
-bool(true)
+The images are equal.
diff --git a/ext/gd/tests/bug43475.png b/ext/gd/tests/bug43475.png
index 774270f63db86efd053f126ab9d66a9e50569768..d53a9a3322ae6aab3ce1840db001f63cd2360295 100644
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diff --git a/ext/gd/tests/bug52070.phpt b/ext/gd/tests/bug52070.phpt
index 6bbe2363a650b..8bc653ae95ef8 100644
--- a/ext/gd/tests/bug52070.phpt
+++ b/ext/gd/tests/bug52070.phpt
@@ -20,6 +20,7 @@ imagedashedline($im, 800, 400, 500, 800, $color);
 imagedashedline($im, 800, 400, 600, 800, $color);
 imagedashedline($im, 800, 400, 700, 800, $color);
 imagedashedline($im, 800, 400, 800, 800, $color);
+imagepalettetotruecolor($im);
 include_once __DIR__ . '/func.inc';
 test_image_equals_file(__DIR__ . '/bug52070.png', $im);
 ?>
diff --git a/ext/gd/tests/bug52070.png b/ext/gd/tests/bug52070.png
index 5ce54b121bc2ed6f250dd98505cfafb50e48b9fc..a6f9a3b875d560724e5f91744c15fe31fd835422 100644
GIT binary patch
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z8S;ZjVgWP{T`>^vlfKKUv0IAIzB(@eh?nsl;qWb^qg)*#*@lLz`1tc;yOJm-#KkED
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z^7K+lq7@|D^X6cQ(~UpnCyX{SEE8C@%z6Z7ljF8vr;s&pzSk!<(a+VMHg*1;I)L1l
zO1g3HGfn`ZK8NX&PUN`y20i*$Se8Lnt=01!f}`H{LZvd7qSy&@KgfK-*-aQAE5Z)R
zDF1i4=Dp80>{L=J^cRTOlzh1JTu>8Dbr#eugOr-p`$C6|f=%0D+M#fm)48l!PzdEd
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zVowSjUY}=a2XBF7FuqQq^R8OU!+tA?Wz~+<&lRrxqO+6riRJD^RZHV>S2EiRgV14o
z!Jkc0cznRhoHvV#;X*H(pDM2J9mUrhB}U>?B9UXA0OHvE;a(S7vl%n8<=jJN+OJ(T
zi+cs7y`}_s!GK}+&NF>tG_uEFeq18Kvahb<7?<|O2#C!x4HfQPbJD*-Rzw&m&?hJU
z6Q$Z<?lWq=w4EtGXVwpxaC^X*9*864HKX!HSBZeEhs5YG>s-HW?~fALR%h3l08MJ1
zKY+&N-pcC}e4k6EOM2vJpc`IGA$J9ZGwavbwpkLq*9T~Tvx9)cvIq<iBd0R$*-Y`C
zOh4C#mZ%g6)C@xOU(GVKGFu@}L?{UARw=CTZm~ohi`B`(vb0r+NU6;h@d+sIGbeS_
z7x#HFyz9K;YD2YW+?Sw+>ij#l!g((NR4z;vk~`4whp|Z2Bv$QkJ>F+U@U&j&r`lB>
zvBDSNqfKQ(3P|N$1|A%~lh3_p-gA|;t(aZ&NnS%0Yag6oS%tAGC1$}TNfyD%Awo3e
zhf?@nSm)NR|9vD>0O5lUjCc!+pC9y7MZfcb4S^(n#?iZd$DsMHzO#`8s6DSH*&cM#
ziXn3cbaIn*rHe$15oizJ$0iE2FNuGj91lHC`7rBls)PL~Pim<oxcXMGyxco&vggP8
z^z0k8!SDD~1Zo&5=K(ppjxb{zKccijL>vE^kGsN>V4v`7^KKJTH7jPe*jU;Q`$Yhi
zMXvH>#uopST=`$u8|&ihHJka%T7-)hvAMo!+BBR(bmR86v95ZxKXsm5HEf>&wcmz|
z$)S!|Rmt2z9ogK#c&CY;vYOjJpGGz$y+N$5E{2<DME_T>Erq_MXYz2TRNn^U9qfye
z+C;_DH~oz8ho**P`?Q!|7G4(is5}FWAvt8D@nwGtdkJm=YPb89^XpFTT+;<SG+64I
z&hB7xfQsfgPa&PLZ~_3@Vl=<qmDiwSb_&1T5TE+N(^<NB3Ky{noy~}6tYVGygQ~Ak
zQ(S$y8hBb7DQO>-Dmkhp3WMAW;Km`Xj_FVEgt->`ke?U64xB9f{Y`KNfgP$ZT>I-E
D7F$KO

diff --git a/ext/gd/tests/bug64641.phpt b/ext/gd/tests/bug64641.phpt
index edfebee99c92a..d2e51817b9b48 100644
--- a/ext/gd/tests/bug64641.phpt
+++ b/ext/gd/tests/bug64641.phpt
@@ -13,7 +13,7 @@ if (!(imagetypes() & IMG_PNG)) {
 ?>
 --FILE--
 <?php
-require_once __DIR__ . '/similarity.inc';
+require_once __DIR__ . '/func.inc';
 
 $im = imagecreatetruecolor(640, 480);
 
@@ -31,15 +31,7 @@ $points = array(
 );
 imagefilledpolygon($im, $points, 0xFFFF00);
 
-$ex = imagecreatefrompng(__DIR__ . '/bug64641.png');
-if (($diss = calc_image_dissimilarity($ex, $im)) < 1e-5) {
-    echo "IDENTICAL";
-} else {
-    echo "DISSIMILARITY: $diss";
-}
-imagedestroy($ex);
-
-imagedestroy($im);
+test_image_equals_file(__DIR__ . '/bug64641.png', $im);
 ?>
 --EXPECT--
-IDENTICAL
+The images are equal.
diff --git a/ext/gd/tests/bug72913.phpt b/ext/gd/tests/bug72913.phpt
index 9eb9c24653530..eea77b6ed56b1 100644
--- a/ext/gd/tests/bug72913.phpt
+++ b/ext/gd/tests/bug72913.phpt
@@ -23,8 +23,16 @@ imagesavealpha($dst, true);
 
 imagecopy($dst, $src, 0,0, 0,0, 50,50);
 
-include_once __DIR__ . '/func.inc';
-test_image_equals_file(__DIR__ . '/bug72913.png', $dst);
+var_dump(imagecolorsforindex($dst, imagecolorat($dst, 0, 0)));
 ?>
 --EXPECT--
-The images are equal.
+array(4) {
+  ["red"]=>
+  int(255)
+  ["green"]=>
+  int(255)
+  ["blue"]=>
+  int(255)
+  ["alpha"]=>
+  int(127)
+}
diff --git a/ext/gd/tests/bug72913.png b/ext/gd/tests/bug72913.png
deleted file mode 100644
index 83eeb81fb16acb3131c987d331ebeb53962ccb1b..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 147
zcmeAS@N?(olHy`uVBq!ia0vp^Mj*_{3?x-PN__%SYymzYuK$66f#G%3^T|LF#*!ev
zU<QY0H`0I{Yfl%)5Q(YD2@)0`7@Ri#Z@lp7zv7m^|Je*;fm*o!{{PRMWAga_fB6j;
qcU(!H!M&M3&Hjw7!S{=z3=Dj+Iu&Mit!hAH7(8A5T-G@yGywod=`<t&

diff --git a/ext/gd/tests/func.inc b/ext/gd/tests/func.inc
index 0f10aa7d83dee..0668742d2b8a7 100644
--- a/ext/gd/tests/func.inc
+++ b/ext/gd/tests/func.inc
@@ -78,9 +78,7 @@ function test_image_equals_file(string $filename, GdImage $actual): void
         save_actual_image($actual);
         return;
     }
-    $actual = test_to_truecolor($actual);
     $expected = imagecreatefrompng($filename);
-    $expected = test_to_truecolor($expected);
     test_image_equals_image($expected, $actual, true);
 }
 
@@ -95,6 +93,7 @@ function test_image_equals_file(string $filename, GdImage $actual): void
  */
 function test_image_equals_image(GdImage $expected, GdImage $actual, bool $save_actual = false): void
 {
+    assert(imageistruecolor($expected) && imageistruecolor($actual));
     $exp_x = imagesx($expected);
     $exp_y = imagesy($expected);
     $act_x = imagesx($actual);
@@ -126,35 +125,13 @@ function test_image_equals_image(GdImage $expected, GdImage $actual, bool $save_
     }
 }
 
-/**
- * Returns the truecolor version of an image.
- *
- * @param resource $image
- * @return resource
- */
-function test_to_truecolor($image)
-{
-    if (imageistruecolor($image)) {
-        return $image;
-    } else {
-        $width = imagesx($image);
-        $height = imagesy($image);
-        $result = imagecreatetruecolor($width, $height);
-        imagecopy($result, $image, 0,0, 0,0, $width, $height);
-        return $result;
-    }
-}
-
 /**
  * Saves an actual image to disk.
  *
  * The image is saved right beside the temporary .php test file with the
  * extension .out.png.
- *
- * @param resource $image
- * @return void
  */
-function save_actual_image($image)
+function save_actual_image(GdImage $image): void
 {
     $pathinfo = pathinfo($_SERVER['SCRIPT_FILENAME']);
     $filename = "{$pathinfo['dirname']}/{$pathinfo['filename']}.out.png";
@@ -178,3 +155,23 @@ function trycatch_dump(...$tests) {
     }
 }
 
+/**
+ * Calculate the mean squared error (in range 0..255**2)
+ */
+function mse(GdImage $image1, GdImage $image2): float
+{
+    assert(imageistruecolor($image1) && imageistruecolor($image2));
+    assert(imagesx($image1) === imagesx($image2) && imagesy($image1) === imagesy($image2));
+    $e = $count = 0;
+    for ($j = 0, $m = imagesy($image1); $j < $m; $j++) {
+        for ($i = 0, $n = imagesx($image1); $i < $n; $i++) {
+            $c1 = imagecolorat($image1, $i, $j);
+            $c2 = imagecolorat($image2, $i, $j);
+            $e += ((($c1 >> 16) & 255) - (($c2 >> 16) & 255)) ** 2
+                + ((($c1 >>  8) & 255) - (($c2 >>  8) & 255)) ** 2
+                + ((($c1 >>  0) & 255) - (($c2 >>  0) & 255)) ** 2;
+            $count += 3;
+        }
+    }
+    return $e / $count;
+}
diff --git a/ext/gd/tests/gd276.phpt b/ext/gd/tests/gd276.phpt
index a12bce3983049..ad7b6343f520d 100644
--- a/ext/gd/tests/gd276.phpt
+++ b/ext/gd/tests/gd276.phpt
@@ -15,6 +15,8 @@ $filename = __DIR__ . "/gd276.bmp";
 imagebmp($orig, $filename, true);
 $saved = imagecreatefrombmp($filename);
 var_dump($saved !== false);
+imagepalettetotruecolor($orig);
+imagepalettetotruecolor($saved);
 test_image_equals_image($orig, $saved);
 ?>
 --EXPECT--
diff --git a/ext/gd/tests/imagebmp_basic.phpt b/ext/gd/tests/imagebmp_basic.phpt
index b3d1212d014cd..31a62e674a845 100644
--- a/ext/gd/tests/imagebmp_basic.phpt
+++ b/ext/gd/tests/imagebmp_basic.phpt
@@ -13,7 +13,7 @@ $im = imagecreate(100, 100);
 imagecolorallocate($im, 0, 0, 0);
 $white = imagecolorallocate($im, 255, 255, 255);
 imageline($im, 10,10, 89,89, $white);
-
+imagepalettetotruecolor($im);
 require __DIR__ . "/func.inc";
 test_image_equals_file(__DIR__ . "/imagebmp_basic.png", $im);
 ?>
diff --git a/ext/gd/tests/imagebmp_basic.png b/ext/gd/tests/imagebmp_basic.png
index 26fc7d0afcf9fc37dc565ce1ffa7c08f83f0d2b6..d52dd04fb0987c6d654fa5ae11d41ae6770a1bd5 100644
GIT binary patch
delta 571
zcmeBWJi#(SqMn0|fq|jm(bNzi#aZAHS<Jw|cLanPr)u*_GcYjz@^o<wshIQjR%Fp3
z0}<AXW#9Ivf112Rq49y^;i*^lGOhBHjP}oG&WrGo-&@~ctL72W)S`+?Y?Xde_Sxb7
zqPq&Ww{>1x;9MWM=*s&K)-F?a&8@Fm*&Ve0ay(Gv<)!rX8c%oE@Ch!>aph}UG-dS-
z&)6wOqOx;4iuOL*tP{8{G<Ao@sh_KSt6eR_uYTOEaeQ^1ywa(Svtj}|H|<X|Z(H<c
z^-Ixp8t=2~mg}ARUm95?@U-;qHb0ljxa+10f&Z@6>U&Q)zN@)G<GX7^gU0=%K%!oN
zjcL)5#sjxBCMs;u^U~p1(<#Ku^m^fu<^xe0&J72wG!8c$kkW8&Jn%>3aN~hH8qQ4z
z_Glb#Ixt7Wx%ohi#^L4zF&e=Q2W&JhHyn`B2yQ&^L*sJefg2jZO$T;pTy8orLnFBP
zK!wKT<^vHL-VFyVG)^}hkkIgMbg(;Bq%fhkev=BvlSMk*OfxmSn;qm%eNvdvs&pb;
zQ={q5)CQ#!>#G)Xd|EP3qiN3y@h*k`SD0NVm~V9xOmWu@WVsosE#k;`g~@e7^Hn#&
zCoZOeES8bFB93|?KvmsS-2|67s0OlVhG>d7a)kj^9g1}oT;dcSz_Rj6q==(d8Jp{b
rQ?e$mHyi%#*8euyA2rHgF*rZn{?j3OsYYPxU|{fc^>bP0l+XkKkY@Jw

delta 105
zcmX@X(#tqOLYk48fq}tGhg}><u?6^qxB}__|Nk$&IsfiNMR8{aT~8Os5R2aA1PLDp
z##Z%)LysLEZd~wTMnFZ+iZ-(aA7tEgWwsVvIW#fvp#w8RAvfpu&qZ86fQB%5y85}S
Ib4q9e02=5e;Q#;t

diff --git a/ext/gd/tests/imagecolorset_basic.phpt b/ext/gd/tests/imagecolorset_basic.phpt
index 5ed9a1ab8600e..7677b85948aa4 100644
--- a/ext/gd/tests/imagecolorset_basic.phpt
+++ b/ext/gd/tests/imagecolorset_basic.phpt
@@ -25,6 +25,7 @@ $bg = imagecolorat($im, 0, 0);
 // Set the background to be blue
 imagecolorset($im, $bg, 0, 0, 255);
 
+imagepalettetotruecolor($im);
 include_once __DIR__ . '/func.inc';
 test_image_equals_file(__DIR__ . '/imagecolorset_basic.png', $im);
 imagedestroy($im);
diff --git a/ext/gd/tests/imagecolorset_basic.png b/ext/gd/tests/imagecolorset_basic.png
index b9e77d116932d30b8dc5866706b08701dab0b0b2..6a37d1d87176f08c5b1caf1ded356956e774522e 100644
GIT binary patch
literal 434
zcmeAS@N?(olHy`uVBq!ia0y~yVAKJ!Q#jawqzxnQ0U*U$;1OBOz`%C|gc+x5^GO3$
zrFgnHhE&XXd&QBLK|$ca2Il|s4l>zqS`xb9`n5Bb%mN$g*%|g2=_nlD(7<z;$%u#h
hguy6>v@q!5e&51$Y@*eK-@r&<@O1TaS?83{1ORKWio*Z^

delta 81
zcmdnQoIF9on~|A;fr0J({AM7<9N-h;%E0iytKw2PkSp!!;uzx5`SxHVki&3z!O!6P
e4_HDOf$Z}P{5A}XzJg(@AQ?|rKbLh*2~7Z&1Qt{P

diff --git a/ext/gd/tests/imagecreatefromstring_bmp.phpt b/ext/gd/tests/imagecreatefromstring_bmp.phpt
index 34db04297e3aa..746e566fdbfea 100644
--- a/ext/gd/tests/imagecreatefromstring_bmp.phpt
+++ b/ext/gd/tests/imagecreatefromstring_bmp.phpt
@@ -22,7 +22,7 @@ $bmp = "\x42\x4D\x3E\x00\x00\x00\x00\x00\x00\x00\x3E\x00\x00\x00\x28\x00"
      . "\x01\x00\x05\x00\x00\x00\x02\x00\x01\x01\x01\x00\x06\x00\x00\x00"
      . "\x0A\x00\x00\x00\x0A\x00\x00\x00\x00\x01";
 $im = imagecreatefromstring($bmp);
-
+imagepalettetotruecolor($im);
 include_once __DIR__ . '/func.inc';
 test_image_equals_file(__DIR__ . '/imagecreatefromstring_bmp.png', $im);
 ?>
diff --git a/ext/gd/tests/imagecreatefromstring_bmp.png b/ext/gd/tests/imagecreatefromstring_bmp.png
index 04ffc83c468e3066d4214f06698547c2ba7ed74f..a9ae65fdc9827c0d0b56752782658283fb3376dc 100644
GIT binary patch
delta 116
zcmb<xW1Jw7$HB(Hz|d=SelL*XEbxddW?<ku0>X?_wfUrhf)<`Gjv*3LlT#8Bew=q;
zNl<bV>^k)S|3_(_@DnFabc7prUHu`FyhCt$(wcb(mq{#Ne^J!fD8O2VG5MAV-}6h;
RdVppyc)I$ztaD0e0swT2DDeOQ

delta 88
zcmZo;teYSq&B)Baz_9&K>^~sI7T^=&3Z(!4|G)I+{JRqsC5+`fT^vI=W+o>vFtf6;
pF|x7ov9XD<v8l1KxpinTGqB1qIJ9rC;Q?x5@O1TaS?83{1OPlR7Eb^G

diff --git a/ext/gd/tests/imagegammacorrect_variation1.phpt b/ext/gd/tests/imagegammacorrect_variation1.phpt
index 55370aa49cf87..67a8e403377ca 100644
--- a/ext/gd/tests/imagegammacorrect_variation1.phpt
+++ b/ext/gd/tests/imagegammacorrect_variation1.phpt
@@ -26,7 +26,7 @@ $half2 =  imagefilledarc ( $image, 75, 75, 70, 70, 0, -180, $gray, IMG_ARC_PIE )
 
 $gamma = imagegammacorrect($image, 1, 5);
 var_dump((bool) $gamma);
-
+imagepalettetotruecolor($image);
 include_once __DIR__ . '/func.inc';
 test_image_equals_file(__DIR__ . '/imagegammacorrect_variation1.png', $image);
 ?>
diff --git a/ext/gd/tests/imagegammacorrect_variation1.png b/ext/gd/tests/imagegammacorrect_variation1.png
index f9718890968a2eae8faad02ef6a536ddb3000ec5..8b0e80c5ea0345cade6f903a41a4613b8b1f16ea 100644
GIT binary patch
literal 686
zcmeAS@N?(olHy`uVBq!ia0vp^(?FPm4M^HB7Cr(}oCO|{#S9F5M?jcysy3fA0|Qfn
zr;B4q#hkadFXl=c3OG2bdI-O|BD=fiNq0k{!bXALkumptSXJH^`U@?P*VotIpa0=#
zon1BK9M1@q7FVYsN7UI?Gs^G0|Nea3p>1*T@$>h#?7vl)^tPtr{FdK4bL7R0IlEgn
zcyK_7BOM#c{%8HYt2XC&$A%g1AkQZGL<rl3*R*RsH&D|_lN7x+<#yD}E&l@(4Ug~G
zpmz7xdXwDyj}IlaO-%INy?4H8;eO@AN%hHxXH|6nKYpdQkN0)i?CKZ&v-a%2n7DEM
z+yDQ*PApyR|7-S*C!SkpM5y#}zHW)G+dX%4|Ht)*wyW(I^XJU6OiS80eX-g#qs*eY
zW-F&HR=@U+Kll6B+G7)iU$2#2e*L7Q?(z1mZv<|LHbv<PU;ET^V4cX7qMaM2z2|t-
z<)}NIH@oux2YcaLQ=O~ce@fi@eZ9rI@4GAHO1_-ujrR@d7Z&48oG3su;s>+)l%l(S
T|609(36R0l)z4*}Q$iB}bm|H*

delta 183
zcmV;o07(C?1;+u97=Hl+00006&*Py0000J1OjJd9czBVKkv6>FPyhe`d`Uz>R7i>K
z(Y+0TAP|OO2!*9?z$lESqcI92SXvnT37-kMBe}-H$i3y000$VOX_}_}vjgSIX4w7#
z3$X1a^RQL05talSU{Np!TLiN(Q^&ukZGm04ZJu5C89It)`7n58m`p6NW6KLBVvf83
lHl*9#i|Nv<iIb*v-U+%W@TaSj<x2nn002ovPDHLkV1i<$PA~uf

diff --git a/ext/gd/tests/imagegammacorrect_variation2.phpt b/ext/gd/tests/imagegammacorrect_variation2.phpt
index 33c89d205a1a7..7621ff98c8945 100644
--- a/ext/gd/tests/imagegammacorrect_variation2.phpt
+++ b/ext/gd/tests/imagegammacorrect_variation2.phpt
@@ -33,6 +33,9 @@ function test_gamma($in, $out, $constructor)
 
     imagegammacorrect($im, $in, $out);
 
+    if ($constructor === "imagecreate") {
+        imagepalettetotruecolor($im);
+    }
     $filename = __DIR__ . DIRECTORY_SEPARATOR
         . "imagegammacorrect_variation2_{$in}_{$out}.png";
     $kind = $constructor === 'imagecreate' ? 'palette' : 'truecolor';
diff --git a/ext/gd/tests/imagetruecolortopalette_basic.phpt b/ext/gd/tests/imagetruecolortopalette_basic.phpt
index 2f1c2961a603c..4abe6cf0b37ad 100644
--- a/ext/gd/tests/imagetruecolortopalette_basic.phpt
+++ b/ext/gd/tests/imagetruecolortopalette_basic.phpt
@@ -25,7 +25,7 @@ $half =  imagefilledarc ( $image, 75, 75, 70, 70, 0, 180, $a, IMG_ARC_PIE );
 $half2 =  imagefilledarc ( $image, 75, 55, 80, 70, 0, -180, $b, IMG_ARC_PIE );
 
 var_dump(imagetruecolortopalette($image, true, 2));
-
+imagepalettetotruecolor($image);
 include_once __DIR__ . '/func.inc';
 test_image_equals_file(__DIR__ . '/imagetruecolortopalette_basic.png', $image);
 ?>
diff --git a/ext/gd/tests/imagetruecolortopalette_basic.png b/ext/gd/tests/imagetruecolortopalette_basic.png
index 7d042f2ac3da278c8ebeedd18665cdbae49e86d4..79e14eef35908f66237035ea8e7b8e6af6357b00 100644
GIT binary patch
literal 709
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zr;B4q#hkad4gHiI1spE2P0W9g@V?&0sYu0aQ_9*Kq6&7GP3zvX+<p4~(~U{;di~S4
zv)+I6@da~%-ytPM9iagxK9+o8%-g%iPQJF~W1a0^yI&mHYtNcp({rAgwftwUsMvE9
zC*E$|dO7@=XW8uAWr>A+hm<y^M(keu_3m4X^}2_X>=Gy5Fk2&g{dZs4+{@b%*KU1(
zp={&lnr(dDJGb#?KQDhev26b7Z;6JNJ2sTnm;c+s`B_5nT9k3yPvK=}5`7}F&q`*c
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z-@R2>J=b)_>fIc#uT7jd*LGQSx%joK{%mFbj<I)hBi{e)yYbF&(RYs5!f|o)TR%G<
qQYySPU)o~Y1`m$zmO(@OVf_DI$62MOC>xkA89ZJ6T-G@yGywo>bt(h^

delta 192
zcmV;x06+i51<(PI7=Hl+00006&*Py0000J1OjJb^0uu!O{2_F>GXMYpg-Jv~R7i>K
z&@m2xAPhj!8U{zb0Y~9za5Rs?5f~ka8Y68A9SDhu4*laBXeofEY1&KK6H8<ZS^V5)
zvTfK5Ss1p7j2#Q<=$J2-JLZb*%xtm53=b1Kh93#c@FT#JD>>tWxiTl#!@;pKBgW!j
usPkgP^I&Yui09xwO=<~Xm85B!_M<M+nH5;T09JGW0000<MNUMnLSTZ+c1_j*

diff --git a/ext/gd/tests/similarity.inc b/ext/gd/tests/similarity.inc
deleted file mode 100644
index cb0dba77f2064..0000000000000
--- a/ext/gd/tests/similarity.inc
+++ /dev/null
@@ -1,64 +0,0 @@
-<?php
-
-/**
- * A very simple algorithm for finding the dissimilarity between images,
- * mainly useful for checking lossy compression.
- */
-
-/**
- * Gets the individual components of an RGB value.
- *
- * @param int $color
- * @param int $red
- * @param int $green
- * @param int $blue
- *
- * @return void
- */
-function get_rgb($color, &$red, &$green, &$blue)
-{
-    // assumes $color is an RGB value
-    $red = ($color >> 16) & 0xFF;
-    $green = ($color >> 8) & 0xFF;
-    $blue = $color & 0xFF;
-}
-
-/**
- * Calculates the euclidean distance of two RGB values.
- *
- * @param int $color1
- * @param int $color2
- *
- * @return int
- */
-function calc_pixel_distance($color1, $color2)
-{
-    get_rgb($color1, $red1, $green1, $blue1);
-    get_rgb($color2, $red2, $green2, $blue2);
-    return sqrt(
-        pow($red1 - $red2, 2) + pow($green1 - $green2, 2) + pow($blue1 - $blue2, 2)
-    );
-}
-
-/**
- * Calculates dissimilarity of two images.
- *
- * @param resource $image1
- * @param resource $image2
- *
- * @return int The dissimilarity. 0 means the images are identical. The higher
- *             the value, the more dissimilar are the images.
- */
-function calc_image_dissimilarity($image1, $image2)
-{
-    // assumes image1 and image2 have same width and height
-    $dissimilarity = 0;
-    for ($i = 0, $n = imagesx($image1); $i < $n; $i++) {
-        for ($j = 0, $m = imagesy($image1); $j < $m; $j++) {
-            $color1 = imagecolorat($image1, $i, $j);
-            $color2 = imagecolorat($image2, $i, $j);
-            $dissimilarity += calc_pixel_distance($color1, $color2);
-        }
-    }
-    return $dissimilarity;
-}
diff --git a/ext/gd/tests/test_image_equals_file_palette.phpt b/ext/gd/tests/test_image_equals_file_palette.phpt
index 2e294c04c4066..d8f6a0556b20c 100644
--- a/ext/gd/tests/test_image_equals_file_palette.phpt
+++ b/ext/gd/tests/test_image_equals_file_palette.phpt
@@ -18,6 +18,7 @@ $red = imagecolorallocate($im, 255, 0, 0);
 imagefilledrectangle($im, 3,3, 7,7, $red);
 
 $filename = __DIR__ . DIRECTORY_SEPARATOR . 'test_image_equals_file_palette.png';
+imagepalettetotruecolor($im);
 imagepng($im, $filename);
 
 $im = imagecreate(10, 10);
@@ -25,6 +26,7 @@ imagecolorallocate($im, 255, 255, 255);
 $blue = imagecolorallocate($im, 0, 0, 255);
 imagefilledrectangle($im, 3,3, 7,7, $blue);
 
+imagepalettetotruecolor($im);
 test_image_equals_file($filename, $im);
 
 $im = imagecreate(10, 10);
@@ -33,6 +35,7 @@ imagecolorallocate($im, 0, 0, 0);
 $red = imagecolorallocate($im, 255, 0, 0);
 imagefilledrectangle($im, 3,3, 7,7, $red);
 
+imagepalettetotruecolor($im);
 test_image_equals_file($filename, $im);
 ?>
 --EXPECT--
diff --git a/ext/gd/tests/webp_basic.phpt b/ext/gd/tests/webp_basic.phpt
index 97b0451c09b8d..ef2fae8652560 100644
--- a/ext/gd/tests/webp_basic.phpt
+++ b/ext/gd/tests/webp_basic.phpt
@@ -12,7 +12,7 @@ if (!function_exists('imagewebp') || !function_exists('imagecreatefromwebp'))
 ?>
 --FILE--
 <?php
-require_once __DIR__ . '/similarity.inc';
+require_once __DIR__ . '/func.inc';
 
 $filename = __DIR__ . '/webp_basic.webp';
 
@@ -30,12 +30,12 @@ imagewebp($im1, $filename);
 $im2 = imagecreatefromwebp($filename);
 imagewebp($im2, $filename);
 echo 'Is lossy conversion close enough? ';
-var_dump(calc_image_dissimilarity($im1, $im2) < 10e5);
+var_dump(mse($im1, $im2) < 500);
 
 imagewebp($im1, $filename, IMG_WEBP_LOSSLESS);
 $im_lossless = imagecreatefromwebp($filename);
 echo 'Does lossless conversion work? ';
-var_dump(calc_image_dissimilarity($im1, $im_lossless) == 0);
+var_dump(mse($im1, $im_lossless) == 0);
 
 try {
 	imagewebp($im1, $filename, -10);

From 75d7684e9f6c7a883d93d02f67b6a8ed2ff6d091 Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Sat, 25 Jan 2025 19:59:12 +0100
Subject: [PATCH 4/4] Remove useless compiler options (GH-17553)

* `/Fp` provides a path name for procompiled headers[1], but we don't use
  these.
* `/FR` is used to generate .sbr files; these have been important long
  ago for Visual Studio support, but as of Visual Studio 2008 the IDE
  no longer uses .sbr files.
* `/LD` is used to inform the *compiler* that it should build a DLL[3];
  however, we build all DLLs with the *linker*.

[1] <https://learn.microsoft.com/en-us/cpp/build/reference/fp-name-dot-pch-file>
[2] <https://learn.microsoft.com/en-us/cpp/build/reference/fr-fr-create-dot-sbr-file>
[3] <https://learn.microsoft.com/en-us/cpp/build/reference/md-mt-ld-use-run-time-library>
---
 win32/build/confutils.js | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/win32/build/confutils.js b/win32/build/confutils.js
index e992d0935feaa..cbc2f6deda816 100644
--- a/win32/build/confutils.js
+++ b/win32/build/confutils.js
@@ -1670,7 +1670,6 @@ function ADD_SOURCES(dir, file_list, target, obj_dir)
 		var mangle_dir = k.replace(new RegExp("[\\\\/.-]", "g"), "_");
 		var bd_flags_name = "CFLAGS_BD_" + mangle_dir.toUpperCase();
 
-		DEFINE(bd_flags_name, "/Fp" + sub_build + d + " /FR" + sub_build + d + " ");
 		if (VS_TOOLSET) {
 			ADD_FLAG(bd_flags_name, "/Fd" + sub_build + d);
 		}
@@ -2474,15 +2473,12 @@ function handle_analyzer_makefile_flags(fd, key, val)
 
 		if ("clang" == PHP_ANALYZER) {
 			val = val.replace(/\/FD /, "")
-				.replace(/\/Fp.+? /, "")
 				.replace(/\/Fo.+? /, "")
 				.replace(/\/Fd.+? /, "")
 				//.replace(/\/Fd.+?/, " ")
-				.replace(/\/FR.+? /, "")
 				.replace("/guard:cf ", "")
 				.replace(/\/MP \d+ /, "")
 				.replace(/\/MP /, "")
-				.replace("/LD ", "")
 				.replace("/Qspectre ", "");
 		} else if ("cppcheck" == PHP_ANALYZER) {
 			new_val = "";
@@ -3449,7 +3445,7 @@ function toolset_setup_common_libs()
 function toolset_setup_build_mode()
 {
 	if (PHP_DEBUG == "yes") {
-		ADD_FLAG("CFLAGS", "/LDd /MDd /Od /U NDebug /U NDEBUG /D ZEND_DEBUG=1 " +
+		ADD_FLAG("CFLAGS", "/MDd /Od /U NDebug /U NDEBUG /D ZEND_DEBUG=1 " +
 			(TARGET_ARCH == 'x86'?"/ZI":"/Zi"));
 		ADD_FLAG("LDFLAGS", "/debug");
 		// Avoid problems when linking to release libraries that use the release
@@ -3461,7 +3457,7 @@ function toolset_setup_build_mode()
 			ADD_FLAG("CFLAGS", "/Zi");
 			ADD_FLAG("LDFLAGS", "/incremental:no /debug /opt:ref,icf");
 		}
-		ADD_FLAG("CFLAGS", "/LD /MD");
+		ADD_FLAG("CFLAGS", "/MD");
 		if (PHP_SANITIZER == "yes") {
 			if (VS_TOOLSET) {
 				ADD_FLAG("CFLAGS", "/Ox /U NDebug /U NDEBUG /D ZEND_DEBUG=1");