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auto_set_wire_bus(): error checks to avoid segfaults

This commit is contained in:
stefan schippers 2026-04-30 15:11:47 +02:00
parent 8c844cc0c9
commit 1cd23c0ddb
1 changed files with 2 additions and 0 deletions
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2
src/netlist.c
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@ -1619,12 +1619,14 @@ void auto_set_wire_bus(int start, int end)
if(xctx->netlist_count) return; /* do this only in top level */
if(end > xctx->wires) return;
if(start < 0) return;
if(!xctx->prep_hi_structs) return;
cc = WIRELAYER; if(xctx->only_probes) cc = GRIDLAYER;
regcomp(&re, "(.+\\[.+(:|\\.\\.)[^.]+\\])|(,)", REG_NOSUB | REG_EXTENDED);
for(i = start;i < end; ++i) {
bus = 0;
oldbus = xctx->wire[i].bus;
if(!xctx->wire[i].node) continue;
if(!regexec(&re, xctx->wire[i].node, 0 , NULL, 0) ) bus = 1;
if( (oldbus == 0.0 && bus == 1) || (oldbus == -1.0 && bus == 0) ) {
dbg(1, "auto_set_wire_bus(): i=%d, oldbus=%g bus=%d\n", i, oldbus, bus);