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Skip symbol insertion for unreachable basic blocks #154

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Merged
merged 1 commit into from
Sep 25, 2024
Merged

Skip symbol insertion for unreachable basic blocks #154

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2 changes: 2 additions & 0 deletions src/globals.c
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Original file line number Diff line number Diff line change
Expand Up @@ -524,6 +524,8 @@ void bb_disconnect(basic_block_t *pred, basic_block_t *succ)
/* The symbol is an argument of function or the variable in declaration */
void add_symbol(basic_block_t *bb, var_t *var)
{
if (!bb)
return;
symbol_t *sym;
for (sym = bb->symbol_list.head; sym; sym = sym->next) {
if (sym->var == var)
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9 changes: 9 additions & 0 deletions tests/driver.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -271,6 +271,15 @@ int main() {
}
EOF

# Unreachable declaration should not cause prog seg-falut (prog should leave normally with exit code 0)
try_ 0 << EOF
int main()
{
return 0;
int a = 5;
}
EOF

try_ 1 << EOF
int is_odd(int x);

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