gbdev/rgbds
1
0
Fork 0
mirror of https://github.com/gbdev/rgbds.git synced 2025-11-20 18:22:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix string expansion reporting

Browse Source 
More expansions were allowed than the limit specified, and reporting code
did not account for the extra one that caused overflow
This commit is contained in:
ISSOtm
2020-07-31 09:49:51 +02:00
parent 149db9a022
commit 38bda7e1bb
1 changed files with 7 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/asm/lexer.c
View File

@@ -501,14 +501,10 @@ static void reallocCaptureBuf(void)
static struct Expansion *getExpansionAtDistance(size_t *distance)
{
unsigned int depth = 0;
struct Expansion *expansion = NULL; /* Top level has no "previous" level */
#define LOOKUP_PRE_NEST(exp)
#define LOOKUP_POST_NEST(exp) do { \
if (depth++ > nMaxRecursionDepth) \
fatalerror("Recursion limit (%u) exceeded", nMaxRecursionDepth); \
} while (0)
#define LOOKUP_POST_NEST(exp)
lookupExpansion(expansion, *distance);
#undef LOOKUP_PRE_NEST
#undef LOOKUP_POST_NEST
@@ -522,9 +518,13 @@ static void beginExpansion(size_t distance, uint8_t skip,
distance += lexerState->expansionOfs; /* Distance argument is relative to read offset! */
/* Increase the total length of all parents, and return the topmost one */
struct Expansion *parent = NULL;
unsigned int depth = 0;
#define LOOKUP_PRE_NEST(exp) (exp)->totalLen += size
#define LOOKUP_POST_NEST(exp)
#define LOOKUP_POST_NEST(exp) do { \
if (++depth >= nMaxRecursionDepth) \
fatalerror("Recursion limit (%u) exceeded", nMaxRecursionDepth); \
} while (0)
lookupExpansion(parent, distance);
#undef LOOKUP_PRE_NEST
#undef LOOKUP_POST_NEST
@@ -784,7 +784,7 @@ void lexer_DumpStringExpansions(void)
{
if (!lexerState)
return;
struct Expansion *stack[nMaxRecursionDepth];
struct Expansion *stack[nMaxRecursionDepth + 1];
unsigned int depth = 0;
size_t distance = lexerState->expansionOfs;