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[git/2.1 regression] Fix opj_write_tile() failure when numresolutions=1 

When trying the GDAL OpenJPEG driver against openjpeg current master HEAD,
I get failures when trying to create .jp2 files. The driver uses
opj_write_tile() and in some tests numresolutions = 1.

In openjp2/dwt.c:410, l_data_size = opj_dwt_max_resolution( tilec->resolutions,tilec->numresolutions) * (OPJ_UINT32)sizeof(OPJ_INT32);
is called and returns l_data_size = 0. Now in git opj_malloc() has a special case
for 0 to return a NULL pointer whereas previously it relied on system malloc(),
which in my case didn't return NULL.

So only test the pointer value if l_data_size != 0. This makes the GDAL
autotest suite to pass again.
This commit is contained in:
Even Rouault 2016-01-08 19:38:45 +01:00
parent 0dd44e7dba
commit 87c0d7dc1e
1 changed files with 1 additions and 1 deletions
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src/lib/openjp2/dwt.c
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@ -409,7 +409,7 @@ static INLINE OPJ_BOOL opj_dwt_encode_procedure(opj_tcd_tilecomp_t * tilec,void
l_data_size = opj_dwt_max_resolution( tilec->resolutions,tilec->numresolutions) * (OPJ_UINT32)sizeof(OPJ_INT32);
bj = (OPJ_INT32*)opj_malloc((size_t)l_data_size);
if (! bj) {
if (l_data_size != 0 && ! bj) {
return OPJ_FALSE;
}
i = l;