Minor OOM check in PIO support routines

6561310d · Earle F. Philhower, III · bac6dae0 · 6561310d
Commit 6561310d authored Feb 23, 2022 by Earle F. Philhower, III
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cores/rp2040/SerialPIO.cpp cores/rp2040/SerialPIO.cpp +4 -0

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--- a/cores/rp2040/SerialPIO.cpp
+++ b/cores/rp2040/SerialPIO.cpp
@@ -36,6 +36,10 @@ static pio_program_t *pio_make_uart_prog(int repl, const pio_program_t *pg) {
    p->length = pg->length;
    p->origin = pg->origin;
    uint16_t *insn = (uint16_t *)malloc(p->length * 2);
+    if (!insn) {
+        delete p;
+        return nullptr;
+    }
    memcpy(insn, pg->instructions, p->length * 2);
    insn[0] = pio_encode_set(pio_x, repl);
    p->instructions = insn;