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fix! loops in preprocess_use_blocks iterate to the wrong bound

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A token_stream being constructed on the spot has different
used/available properties to a fully constructed one: a fully
constructed token stream uses available to hold the total number of
tokens and used as an internal iterator, while one that is still being
constructed uses the semantics of a standard darr.

Furthermore, some loops didn't divide by ~sizeof(token_t)~ which lead
to iteration over bound errors.
This commit is contained in:
Aryadev Chavali
2024-04-14 01:57:04 +06:30
parent e2667eda65
commit 4e9eb0a42e
2 changed files with 10 additions and 10 deletions
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6
asm/parser.c
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@@ -379,7 +379,7 @@ perr_t preprocess_use_blocks(token_stream_t *stream, token_stream_t *new)
DARR_AT(token_t, stream->data, i + 1).type != TOKEN_LITERAL_STRING)
{
stream->used = i + 1 >= stream->available ? i : i + 1;
for (size_t i = 0; i < (new_stream.available / sizeof(token_t)); ++i)
for (size_t i = 0; i < (new_stream.used / sizeof(token_t)); ++i)
free(TOKEN_STREAM_AT(new_stream.data, i).str);
free(new_stream.data);
return PERR_PREPROCESSOR_EXPECTED_STRING;
@@ -390,7 +390,7 @@ perr_t preprocess_use_blocks(token_stream_t *stream, token_stream_t *new)
FILE *fp = fopen(t.str, "rb");
if (!fp)
{
for (size_t i = 0; i < new_stream.available; ++i)
for (size_t i = 0; i < (new_stream.used / sizeof(token_t)); ++i)
free(TOKEN_STREAM_AT(new_stream.data, i).str);
free(new_stream.data);
stream->used = i;
@@ -410,7 +410,7 @@ perr_t preprocess_use_blocks(token_stream_t *stream, token_stream_t *new)
free(TOKEN_STREAM_AT(fstream.data, i).str);
free(fstream.data);
}
for (size_t i = 0; i < new_stream.available; ++i)
for (size_t i = 0; i < (new_stream.used / sizeof(token_t)); ++i)
free(TOKEN_STREAM_AT(new_stream.data, i).str);
free(new_stream.data);
stream->used = i;