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| author | Christoph M. Becker <cmbecker69@gmx.de> | 2016-11-16 18:10:29 +0100 |
|---|---|---|
| committer | Christoph M. Becker <cmbecker69@gmx.de> | 2016-11-16 18:10:29 +0100 |
| commit | fea55903eeeb89d4a0117519f8c1d039adc95da5 (patch) | |
| tree | 23fece8c3691331b5b6f1918b718319970e5ebcf /tests/png/bug00338.c | |
| parent | 5ebbd50cffc013a7dd0f3b1eaaa83d199e8e47fd (diff) | |
| download | libgd-fea55903eeeb89d4a0117519f8c1d039adc95da5.tar.gz | |
Fix #338: Fatal and normal libjpeg/ibpng errors not distinguishable
libgd clients need to be able to distinguish between fatal and
"extremely fatal" libjpeg and libpng errors, because in the former case
execution can proceed, but in the latter case libgd calls exit().
Therefore we report fatal errors as GD_WARNING.
Diffstat (limited to 'tests/png/bug00338.c')
| -rw-r--r-- | tests/png/bug00338.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tests/png/bug00338.c b/tests/png/bug00338.c new file mode 100644 index 0000000..af16df1 --- /dev/null +++ b/tests/png/bug00338.c @@ -0,0 +1,48 @@ +/**
+ * Regression test for <https://github.com/libgd/libgd/issues/338>
+ *
+ * We're testing that writing a PNG image with an unsupported quality
+ * raises a GD_WARNING for the fatal libpng error, but not a GD_ERROR.
+ * We also make sure, that the fatal libpng error is actually reported.
+ *
+ * See also ../jpeg/bug00338.c
+ */
+
+
+#include <string.h>
+#include "gd.h"
+#include "gd_errors.h"
+#include "gdtest.h"
+
+
+#define MSG "gd-png: fatal libpng error: %s\n"
+
+
+static int error_handler_called = 0;
+
+
+static void error_handler(int priority, const char *format, va_list args)
+{
+ if (!strcmp(format, MSG)) {
+ gdTestAssertMsg(priority == GD_WARNING, "expected priority %d, but got %d", GD_WARNING, priority);
+ error_handler_called = 1;
+ }
+}
+
+
+int main()
+{
+ gdImagePtr im;
+ FILE *fp;
+
+ gdSetErrorMethod(error_handler);
+
+ im = gdImageCreateTrueColor(10, 10);
+ fp = gdTestTempFp();
+ gdImagePngEx(im, fp, 100);
+ gdImageDestroy(im);
+
+ gdTestAssert(error_handler_called);
+
+ return gdNumFailures();
+}
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