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Fix files being unmapped when still referenced by macros

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This commit is contained in:
ISSOtm
2020-08-17 00:06:02 +02:00
parent 8d18b39eee
commit 35396e6410
1 changed files with 7 additions and 1 deletions
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8
src/asm/lexer.c
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@@ -257,6 +257,7 @@ struct LexerState {
char *ptr; /* Technically `const` during the lexer's execution */
off_t size;
off_t offset;
bool isReferenced; /* If a macro in this file requires not unmapping it*/
};
struct { /* Otherwise */
int fd;
@@ -415,7 +416,7 @@ void lexer_DeleteState(struct LexerState *state)
{
if (!state->isMmapped)
close(state->fd);
else if (state->isFile)
else if (state->isFile && !state->isReferenced)
munmap(state->ptr, state->size);
free(state);
}
@@ -1944,6 +1945,11 @@ void lexer_CaptureMacroBody(char **capture, size_t *size)
unsigned int level = 0;
int c = peek(0);
/* If the file is `mmap`ed, we need not to unmap it to keep access to the macro */
if (lexerState->isMmapped)
/* FIXME: this is godawful, but RGBASM doesn't even clean up anything anyways. */
lexerState->isReferenced = true;
/*
* Due to parser internals, it does not read the EOL after the T_POP_MACRO before calling
* this. Thus, we need to keep one in the buffer afterwards.