Fix a memory leak in pngtest.c
Ensure that row_buf is deallocated not only after a read error, but
also after a write error.
Use the format "%p" instead of "0x%08lx" for printf-ing row_buf in
a portable manner.
diff --git a/pngtest.c b/pngtest.c
index e196fda..f305d08 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
- * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -957,6 +957,8 @@
if (setjmp(png_jmpbuf(write_ptr)))
{
fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
+ png_free(read_ptr, row_buf);
+ row_buf = NULL;
if (verbose != 0)
fprintf(STDERR, " destroying read structs\n");
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
@@ -1436,7 +1438,7 @@
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
- pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
+ pngtest_debug1("\t%p", row_buf);
#endif /* SINGLE_ROWBUF_ALLOC */
pngtest_debug("Writing row data");
@@ -1490,7 +1492,7 @@
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
- pngtest_debug2("\t0x%08lx (%lu bytes)", (unsigned long)row_buf,
+ pngtest_debug2("\t%p (%lu bytes)", row_buf,
(unsigned long)png_get_rowbytes(read_ptr, read_info_ptr));
#endif /* !SINGLE_ROWBUF_ALLOC */
