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-W-unreachable-code option added, alphabetic order of --list-warnings

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This commit is contained in:
Dirk Lehmann 2021-04-12 17:05:31 +02:00 committed by Oliver Schmidt
parent 5f8d163045
commit eb1cf750f2
4 changed files with 9 additions and 4 deletions
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2
doc/cc65.sgml
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@ -555,6 +555,8 @@ Here is a description of all the command line options:
Warn when passing structs by value.
<tag><tt/unknown-pragma/</tag>
Warn about #pragmas that aren't recognized by cc65.
<tag><tt/unreachable-code/</tag>
Warn about unreachable code in cases of comparing constants, etc.
<tag><tt/unused-label/</tag>
Warn about unused labels.
<tag><tt/unused-param/</tag>

6
src/cc65/error.c
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@ -71,12 +71,13 @@ IntStack WarnNoEffect = INTSTACK(1); /* - statements without an effect */
IntStack WarnPointerSign = INTSTACK(1); /* - pointer conversion to pointer differing in signedness */
IntStack WarnPointerTypes = INTSTACK(1); /* - pointer conversion to incompatible pointer type */
IntStack WarnRemapZero = INTSTACK(1); /* - remapping character code zero */
IntStack WarnReturnType = INTSTACK(1); /* - control reaches end of non-void function */
IntStack WarnStructParam = INTSTACK(0); /* - structs passed by val */
IntStack WarnUnknownPragma = INTSTACK(1); /* - unknown #pragmas */
IntStack WarnUnreachableCode= INTSTACK(1); /* - unreachable code */
IntStack WarnUnusedLabel = INTSTACK(1); /* - unused labels */
IntStack WarnUnusedParam = INTSTACK(1); /* - unused parameters */
IntStack WarnUnusedVar = INTSTACK(1); /* - unused variables */
IntStack WarnReturnType = INTSTACK(1); /* - control reaches end of non-void function */
/* Map the name of a warning to the intstack that holds its state */
typedef struct WarnMapEntry WarnMapEntry;
@ -92,12 +93,13 @@ static WarnMapEntry WarnMap[] = {
{ &WarnPointerSign, "pointer-sign" },
{ &WarnPointerTypes, "pointer-types" },
{ &WarnRemapZero, "remap-zero" },
{ &WarnReturnType, "return-type" },
{ &WarnStructParam, "struct-param" },
{ &WarnUnknownPragma, "unknown-pragma" },
{ &WarnUnreachableCode, "unreachable-code" },
{ &WarnUnusedLabel, "unused-label" },
{ &WarnUnusedParam, "unused-param" },
{ &WarnUnusedVar, "unused-var" },
{ &WarnReturnType, "return-type" },
};
Collection DiagnosticStrBufs;

3
src/cc65/error.h
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@ -68,12 +68,13 @@ extern IntStack WarnPointerSign; /* - pointer conversion to pointer diffe
extern IntStack WarnPointerTypes; /* - pointer conversion to incompatible pointer type */
extern IntStack WarnNoEffect; /* - statements without an effect */
extern IntStack WarnRemapZero; /* - remapping character code zero */
extern IntStack WarnReturnType; /* - control reaches end of non-void function */
extern IntStack WarnStructParam; /* - structs passed by val */
extern IntStack WarnUnknownPragma; /* - unknown #pragmas */
extern IntStack WarnUnreachableCode; /* - unreachable code */
extern IntStack WarnUnusedLabel; /* - unused labels */
extern IntStack WarnUnusedParam; /* - unused parameters */
extern IntStack WarnUnusedVar; /* - unused variables */
extern IntStack WarnReturnType; /* - control reaches end of non-void function */
/* Forward */
struct StrBuf;

2
src/cc65/stmt.c
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@ -187,7 +187,7 @@ static int IfStatement (void)
/* If the if expression was always true, the code in the else branch
** is never executed. Output a warning if this is the case.
*/
if (TestResult == TESTEXPR_TRUE) {
if (TestResult == TESTEXPR_TRUE && IS_Get (&WarnUnreachableCode)) {
Warning ("Unreachable code");
}