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Warn when structs are passed by value to a function.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4369 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2009-10-15 19:18:34 +00:00
parent 1f489fd9e1
commit 1f92d6bfa2
3 changed files with 10 additions and 0 deletions
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7
src/cc65/declare.c
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@ -1167,6 +1167,13 @@ static void ParseAnsiParamList (FuncDesc* F)
/* Create a symbol table entry */
AddLocalSym (Decl.Ident, ParamTypeCvt (Decl.Type), Decl.StorageClass, 0);
/* If the parameter is a struct or union, emit a warning */
if (IsClassStruct (Decl.Type)) {
if (IS_Get (&WarnStructParam)) {
Warning ("Passing struct by value for parameter `%s'", Decl.Ident);
}
}
/* Count arguments */
++F->ParamCount;

2
src/cc65/error.c
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@ -63,6 +63,7 @@ unsigned WarningCount = 0;
/* Warning and error options */
IntStack WarnEnable = INTSTACK(1); /* Enable warnings */
IntStack WarningsAreErrors = INTSTACK(0); /* Treat warnings as errors */
IntStack WarnStructParam = INTSTACK(1); /* Warn about structs passed by val */
IntStack WarnUnusedLabel = INTSTACK(1); /* Warn about unused labels */
IntStack WarnUnusedParam = INTSTACK(1); /* Warn about unused parameters */
IntStack WarnUnusedVar = INTSTACK(1); /* Warn about unused variables */
@ -77,6 +78,7 @@ struct WarnMapEntry {
static WarnMapEntry WarnMap[] = {
/* Keep sorted, even if this isn't used for now */
{ &WarningsAreErrors, "error" },
{ &WarnStructParam, "struct-param" },
{ &WarnUnknownPragma, "unknown-pragma" },
{ &WarnUnusedLabel, "unused-label" },
{ &WarnUnusedParam, "unused-param" },

1
src/cc65/error.h
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@ -60,6 +60,7 @@ extern unsigned WarningCount;
/* Warning and error options */
extern IntStack WarnEnable; /* Enable warnings */
extern IntStack WarningsAreErrors; /* Treat warnings as errors */
extern IntStack WarnStructParam; /* Warn about structs passed by val */
extern IntStack WarnUnusedLabel; /* Warn about unused labels */
extern IntStack WarnUnusedParam; /* Warn about unused parameters */
extern IntStack WarnUnusedVar; /* Warn about unused variables */