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Fix a compiler crash that happens after a function definition with two or

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more identical parameter names. The input is of course wrong, but the
compiler shouldn't crash.


git-svn-id: svn://svn.cc65.org/cc65/trunk@644 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2001-03-22 20:54:52 +00:00
parent 787ca6a9dd
commit 00706daa49
1 changed files with 11 additions and 3 deletions
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10
src/cc65/expr.c
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@ -561,10 +561,18 @@ static void callfunction (struct expent* lval)
/* Fetch the pointer to the next argument, check for too many args */ /* Fetch the pointer to the next argument, check for too many args */
if (ParamCount <= Func->ParamCount) { if (ParamCount <= Func->ParamCount) {
/* Beware: If there are parameters with identical names, they
* cannot go into the same symbol table, which means that in this
* case of errorneous input, the number of nodes in the symbol
* table and ParamCount are NOT equal. We have to handle this case
* below to avoid segmentation violations. Since we know that this
* problem can only occur if there is more than one parameter,
* we will just use the last one.
*/
if (ParamCount == 1) { if (ParamCount == 1) {
/* First argument */ /* First argument */
Param = Func->SymTab->SymHead; Param = Func->SymTab->SymHead;
} else { } else if (Param->NextSym != 0) {
/* Next argument */ /* Next argument */
Param = Param->NextSym; Param = Param->NextSym;
CHECK ((Param->Flags & SC_PARAM) != 0); CHECK ((Param->Flags & SC_PARAM) != 0);