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ivlpp: Add -Wredef option to enable redefinition warnings 

Signed-off-by: Andrew Andrianov <andrew@ncrmnt.org>
This commit is contained in:
Andrew Andrianov 2017-10-18 19:18:14 +03:00
parent 73167563d5
commit 0c84413347
3 changed files with 16 additions and 4 deletions
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2
ivlpp/globals.h
View File

@ -53,6 +53,8 @@ extern char dep_mode;
extern int verbose_flag; extern int verbose_flag;
extern int warn_redef;
/* This is the entry to the lexer. */ /* This is the entry to the lexer. */
extern int yylex(void); extern int yylex(void);

4
ivlpp/lexor.lex
View File

@ -868,8 +868,8 @@ void define_macro(const char* name, const char* value, int keyword, int argc)
prev = def_lookup(name); prev = def_lookup(name);
if (prev) { if (prev) {
emit_pathline(istack); emit_pathline(istack);
fprintf(stderr, "warning: redefinition of macro %s\n", fprintf(stderr, "warning: redefinition of macro %s from value '%s' to '%s'\n",
name); name, prev->value, value);
} }
def = malloc(sizeof(struct define_t)); def = malloc(sizeof(struct define_t));

14
ivlpp/main.c
View File

@ -98,6 +98,9 @@ int line_direct_flag = 0;
unsigned error_count = 0; unsigned error_count = 0;
FILE *depend_file = NULL; FILE *depend_file = NULL;
/* Should we warn about macro redefinitions? */
int warn_redef = 0;
static int flist_read_flags(const char*path) static int flist_read_flags(const char*path)
{ {
char line_buf[2048]; char line_buf[2048];
@ -282,7 +285,7 @@ int main(int argc, char*argv[])
include_dir[0] = 0; /* 0 is reserved for the current files path. */ include_dir[0] = 0; /* 0 is reserved for the current files path. */
include_dir[1] = strdup("."); include_dir[1] = strdup(".");
while ((opt=getopt(argc, argv, "F:f:K:Lo:p:P:vV")) != EOF) switch (opt) { while ((opt=getopt(argc, argv, "F:f:K:Lo:p:P:vVW:")) != EOF) switch (opt) {
case 'F': case 'F':
flist_read_flags(optarg); flist_read_flags(optarg);
@ -336,6 +339,12 @@ int main(int argc, char*argv[])
break; break;
} }
case 'W': {
if (strcmp(optarg, "redef")==0)
warn_redef = 1;
break;
}
case 'v': case 'v':
fprintf(stderr, "Icarus Verilog Preprocessor version " fprintf(stderr, "Icarus Verilog Preprocessor version "
VERSION " (" VERSION_TAG ")\n\n"); VERSION " (" VERSION_TAG ")\n\n");
@ -366,7 +375,8 @@ int main(int argc, char*argv[])
" -p<fil> - Write precompiled defines to <fil>\n" " -p<fil> - Write precompiled defines to <fil>\n"
" -P<fil> - Read precompiled defines from <fil>\n" " -P<fil> - Read precompiled defines from <fil>\n"
" -v - Verbose\n" " -v - Verbose\n"
" -V - Print version information and quit\n", " -V - Print version information and quit\n"
" -W<cat> - Enable extra ivlpp warning category (e.g. redef)\n",
argv[0]); argv[0]);
return flag_errors; return flag_errors;
} }