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If next byte ends the GIF, stay on the current frame

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This commit is contained in:
Andrew Murray 2022-02-21 17:35:50 +11:00
parent 73cf28cc94
commit 590c616cfd
1 changed files with 12 additions and 4 deletions
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14
src/PIL/GifImagePlugin.py
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@ -154,9 +154,6 @@ class GifImageFile(ImageFile.ImageFile):
if frame != self.__frame + 1: if frame != self.__frame + 1:
raise ValueError(f"cannot seek to frame {frame}") raise ValueError(f"cannot seek to frame {frame}")
self.__frame = frame
self.tile = []
self.fp = self.__fp self.fp = self.__fp
if self.__offset: if self.__offset:
@ -166,6 +163,14 @@ class GifImageFile(ImageFile.ImageFile):
pass pass
self.__offset = 0 self.__offset = 0
s = self.fp.read(1)
if not s or s == b";":
raise EOFError
self.__frame = frame
self.tile = []
if self.__frame == 1: if self.__frame == 1:
self.pyaccess = None self.pyaccess = None
if "transparency" in self.info: if "transparency" in self.info:
@ -187,6 +192,7 @@ class GifImageFile(ImageFile.ImageFile):
interlace = None interlace = None
while True: while True:
if not s:
s = self.fp.read(1) s = self.fp.read(1)
if not s or s == b";": if not s or s == b";":
break break
@ -225,6 +231,7 @@ class GifImageFile(ImageFile.ImageFile):
else: else:
info["comment"] = block info["comment"] = block
block = self.data() block = self.data()
s = None
continue continue
elif s[0] == 255: elif s[0] == 255:
# #
@ -266,6 +273,7 @@ class GifImageFile(ImageFile.ImageFile):
else: else:
pass pass
# raise OSError, "illegal GIF tag `%x`" % s[0] # raise OSError, "illegal GIF tag `%x`" % s[0]
s = None
frame_palette = palette or self.global_palette frame_palette = palette or self.global_palette