Fix bad length in snprintf

Author: mattjala

.github/workflows/main.yml

@@ -33,7 +33,7 @@ jobs:
       matrix:
         os: [ubuntu-22.04, ubuntu-latest]
         build_system: ["autotools", "cmake"]
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10"]
         hdf5-branch: ["hdf5_1_14", "develop"]
         compiler: ["gcc-11", "gcc-12", "gcc-13"]
         exclude:

src/rest_vol.c

@@ -3164,10 +3164,9 @@ RV_convert_dataspace_shape_to_JSON(hid_t space_id, char **shape_body, char **max
                         strcat(maxdims_out_string_curr_pos++, "0");
                     } /* end if */
                     else {
-                        if ((bytes_printed =
-                                 snprintf(maxdims_out_string_curr_pos,
-                                          maxdims_out_string_new_len - (size_t)maxdims_out_string_curr_pos,
-                                          "%s%" PRIuHSIZE, i > 0 ? "," : "", maxdims[i])) < 0)
+                        if ((bytes_printed = snprintf(maxdims_out_string_curr_pos,
+                                                      maxdims_out_string_new_len - (size_t)buf_ptrdiff,
+                                                      "%s%" PRIuHSIZE, i > 0 ? "," : "", maxdims[i])) < 0)
                             FUNC_GOTO_ERROR(H5E_DATASPACE, H5E_SYSERRSTR, FAIL, "snprintf error");
                         maxdims_out_string_curr_pos += bytes_printed;
                     } /* end else */

src/rest_vol_config.h.in

@@ -30,6 +30,9 @@
 /* Define to 1 if you have the <mach/mach_time.h> header file. */
 #undef HAVE_MACH_MACH_TIME_H
 
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
 /* Define to 1 if you have the <setjmp.h> header file. */
 #undef HAVE_SETJMP_H
 
@@ -45,9 +48,6 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
-/* Define to 1 if you have the <stdio.h> header file. */
-#undef HAVE_STDIO_H
-
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
@@ -81,9 +81,6 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
-/* Whether HDF5 version is at least 2.0.0 */
-#undef HDF5_2
-
 /* Define to the sub-directory where libtool stores uninstalled libraries. */
 #undef LT_OBJDIR
 
@@ -114,13 +111,10 @@
 /* The size of `off_t', as computed by sizeof. */
 #undef SIZEOF_OFF_T
 
-/* Define to 1 if all of the C90 standard headers exist (not just the ones
-   required in a freestanding environment). This macro is provided for
-   backward compatibility; new code need not use it. */
+/* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
-/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. This
-   macro is obsolete. */
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
 #undef TIME_WITH_SYS_TIME
 
 /* Define to have the REST VOL track memory usage. */