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46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
--- libplot/x_afftext.c.orig 2008-07-16 00:54:10 UTC
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+++ libplot/x_afftext.c
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@@ -185,7 +185,10 @@ XAffCreateAffinedText (Display *dpy, XFontStruct *font
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/* invert transformation matrix */
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det = aa[0] * aa[3] - aa[1] * aa[2];
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if (det == 0.0)
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+ {
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+ free(afftext);
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return NULL; /* don't support singular matrices */
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+ }
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a_inverse[0] = aa[3] / det;
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a_inverse[1] = - aa[1] / det;
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a_inverse[2] = - aa[2] / det;
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@@ -205,7 +208,10 @@ XAffCreateAffinedText (Display *dpy, XFontStruct *font
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/* paranoia */
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if (size_in.x == 0 || size_in.y == 0)
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+ {
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+ free(afftext);
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return NULL;
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+ }
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/* work around a possible bug: some X displays can't create pixmaps that
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are only one pixel wide or high */
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@@ -238,7 +244,10 @@ XAffCreateAffinedText (Display *dpy, XFontStruct *font
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/* create local image */
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im_in = XAffCreateXImage (dpy, size_in);
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if (im_in == NULL)
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+ {
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+ free(afftext);
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return NULL;
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+ }
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/* copy bitmap to it */
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XGetSubImage (dpy, bitmap_in, 0, 0, size_in.x, size_in.y,
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@@ -308,7 +317,10 @@ XAffCreateAffinedText (Display *dpy, XFontStruct *font
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/* create 2nd image, to hold affinely transformed text */
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im_out = XAffCreateXImage (dpy, size_out);
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if (im_out == NULL)
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+ {
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+ free(afftext);
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return NULL;
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+ }
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/* copy from 1st image to this new one */
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