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Fix segfault due to missing symbol #399

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Merged
t20100 merged 1 commit into from
Jun 25, 2026
Merged

Fix segfault due to missing symbol #399

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19 changes: 12 additions & 7 deletions lib/hdf5_dl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -143,14 +143,19 @@ static struct {


/*HDF5 variables*/
#define DEF_DEFAULT_BOOL_VARIABLE(NAME)\
_Bool NAME = -1
#define DEF_DEFAULT_BOOL_VARIABLE(NAME, value)\
_Bool NAME = value

#define DEF_DLSYM_BOOL_VARIABLE(NAME)\
NAME = *((_Bool *)dlsym(handle, #NAME))
{\
void * symbol = dlsym(handle, #NAME);\
if (symbol != NULL) {\
NAME = *((_Bool *)symbol);\
}\
}

DEF_DEFAULT_BOOL_VARIABLE(H5_libinit_g);
DEF_DEFAULT_BOOL_VARIABLE(H5_libterm_g);
DEF_DEFAULT_BOOL_VARIABLE(H5_libinit_g, true);
DEF_DEFAULT_BOOL_VARIABLE(H5_libterm_g, false);

#define DEF_DEFAULT_VARIABLE(NAME)\
hid_t NAME = -1
Expand Down Expand Up @@ -239,8 +244,8 @@ int init_filter(const char* libname)
DL_H5Functions.H5Zunregister = (DL_func_H5Zunregister)dlsym(handle, "H5Zunregister");

/*Variables*/
DEF_DLSYM_BOOL_VARIABLE(H5_libinit_g);
DEF_DLSYM_BOOL_VARIABLE(H5_libterm_g);
DEF_DLSYM_BOOL_VARIABLE(H5_libinit_g)
DEF_DLSYM_BOOL_VARIABLE(H5_libterm_g)

DEF_DLSYM_VARIABLE(H5E_ARGS_g);
DEF_DLSYM_VARIABLE(H5E_BADTYPE_g);
Expand Down
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