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Mark unused vars on local vars #77

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merged 2 commits into from
Apr 14, 2024
Merged

Mark unused vars on local vars #77

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ea3c6f5
Define MARK_VAR_AS_USED in generate code
masatake Jan 13, 2024
e0ae277
Mark some local variables in generated code as "unused"
masatake Jan 13, 2024
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13 changes: 9 additions & 4 deletions src/packcc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2898,9 +2898,9 @@ static code_reach_t generate_quantifying_code(generate_t *gen, const node_t *exp
indent += 4;
}
stream__write_characters(gen->stream, ' ', indent);
stream__puts(gen->stream, "const size_t p = ctx->cur;\n");
stream__puts(gen->stream, "const size_t p MARK_VAR_AS_USED = ctx->cur;\n");
stream__write_characters(gen->stream, ' ', indent);
stream__puts(gen->stream, "const size_t n = chunk->thunks.len;\n");
stream__puts(gen->stream, "const size_t n MARK_VAR_AS_USED = chunk->thunks.len;\n");
{
const int l = ++gen->label;
if (generate_code(gen, expr, l, indent, FALSE) != CODE_REACH__ALWAYS_SUCCEED) {
Expand Down Expand Up @@ -3024,9 +3024,9 @@ static code_reach_t generate_alternative_code(generate_t *gen, const node_array_
indent += 4;
}
stream__write_characters(gen->stream, ' ', indent);
stream__puts(gen->stream, "const size_t p = ctx->cur;\n");
stream__puts(gen->stream, "const size_t p MARK_VAR_AS_USED = ctx->cur;\n");
stream__write_characters(gen->stream, ' ', indent);
stream__puts(gen->stream, "const size_t n = chunk->thunks.len;\n");
stream__puts(gen->stream, "const size_t n MARK_VAR_AS_USED = chunk->thunks.len;\n");
for (i = 0; i < nodes->len; i++) {
const bool_t c = (i + 1 < nodes->len) ? TRUE : FALSE;
const int l = ++gen->label;
Expand Down Expand Up @@ -3365,6 +3365,11 @@ static bool_t generate(context_t *ctx) {
"#else\n"
"#define MARK_FUNC_AS_USED __attribute__((__unused__))\n"
"#endif\n"
"#ifdef _MSC_VER\n"
"#define MARK_VAR_AS_USED\n"
"#else\n"
"#define MARK_VAR_AS_USED __attribute__((__unused__))\n"
"#endif\n"
"\n"
"#ifndef PCC_BUFFER_MIN_SIZE\n"
"#define PCC_BUFFER_MIN_SIZE 256\n"
Expand Down
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