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Added unit test for inflate with Z_FINISH and no window.

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This test decompresses a small git pack object with the text:
"alone in the dark". By providing inflate with Z_FINISH, it should not use a
sliding window according to zlib docs. We purposefully limit the read buffer
size to trigger CHECK mode to bail early.
This commit is contained in:
Nathan Moinvaziri 2023-11-21 22:30:45 -08:00 committed by Hans Kristian Rosbach
parent 6592accb25
commit 0b3bb1d823
3 changed files with 14 additions and 0 deletions
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test/GH-1600/packobj.gz Normal file
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8
test/cmake/test-issues.cmake
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@ -66,3 +66,11 @@ add_test(NAME GH-751
-DTEST_NAME=GH-751-test-txt
-DINPUT=${CMAKE_CURRENT_SOURCE_DIR}/GH-751/test.txt
-P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/compress-and-verify.cmake)
set(TEST_COMMAND ${MINIDEFLATE_COMMAND}
"-d;-k;-s;4;${CMAKE_CURRENT_SOURCE_DIR}/GH-1600/packobj.gz")
add_test(NAME GH-1600-no-window-check COMMAND ${TEST_COMMAND})
set(TEST_COMMAND ${MINIDEFLATE_COMMAND}
"-d;-k;-s;4;-r;25;${CMAKE_CURRENT_SOURCE_DIR}/GH-1600/packobj.gz")
add_test(NAME GH-1600-no-window-no-check COMMAND ${TEST_COMMAND})

6
test/minideflate.c
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@ -167,6 +167,12 @@ void inflate_params(FILE *fin, FILE *fout, int32_t read_buf_size, int32_t write_
do {
err = PREFIX(inflate)(&d_stream, flush);
/* Ignore Z_BUF_ERROR if we are finishing and read buffer size is
* purposefully limited */
if (flush == Z_FINISH && err == Z_BUF_ERROR && read_buf_size != BUFSIZE)
err = Z_OK;
if (err == Z_STREAM_END) break;
CHECK_ERR(err, "inflate");