Crash when using large String or Blob

Symptom

PowerBuilder crashes when loading large data over 250 MB in a
string or a blob

Environment

PowerBuilder

OS: All Windows platforms

Reproducing the Issue

This code crashes

ulonglul_size
lul_size = 1024 * 1000
string ls
int li

        for li = 1 to 256
    ls += space (lul_size)
loop

ulonglul_size

lul_size = 1024 * 1000

string ls

int li

for li = 1 to 256

ls += space (lul_size)

loop

Cause

This is not a PowerBuilder issue but a 32-bit limitation of the
Microsoft Windows memory indexing.

Similar C# code as PowerBuilder’s one crashes:

            int li;
            string large = "";
            string ls_10mg = "";
            ls_10mg = ls_10mg.PadRight(iul_mb, 'x');

                   for (li = 1; li &lt;= 500; li++) {
                large += ls_10mg;
            }

int li;

string large = "";

string ls_10mg = "";

ls_10mg = ls_10mg.PadRight(iul_mb, 'x');

for (li = 1; li <= 500; li++) {

large += ls_10mg;

}

The same code works when compiling a 64-bit executable as well
with C# as with PowerBuilder

Solution

Use a PowerBuilder 64-bit executable.

Document get from Powerbuilder help

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Powerbuilder Documentation 2022

August 21, 2023

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Crash when using large String or Blob

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