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Always perform == or != operation on cmp function result

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Although not required to address bad code generation in
some versions of gcc 9 and 10, a coding style that requires
explicit comparison of the result to zero before use is
both clearer and would have avoided the generation of bad
code.

This change converts all use of cmp function usage from

```
    if (strcmp(a, b) || !strcmp(c, d)) ...
```

to

```
    if (strcmp(a, b) != 0 || strcmp(c, d)) == 0
```

for all C library cmp functions and related:

 - strcmp(), strncmp()
 - strcasecmp(), strncasecmp()
 - stricmp(), strnicmp()
 - memcmp()

Change-Id: Ic60c15e1e3a07e4faaf10648eefe3adae2543188
This commit is contained in:
Nicolas Williams
2021-11-14 23:52:50 -06:00
committed by Jeffrey Altman
parent 02200d55ea
commit 5f63215d0d
46 changed files with 119 additions and 116 deletions
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9
lib/asn1/gen.c
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@@ -990,7 +990,7 @@ get_open_type_defn_fields(const Type *t,
}
/* Look for the type ID member identified in the previous loop */
HEIM_TAILQ_FOREACH(m, t->members, members) {
if (!m->type->subtype || strcmp(m->name, idmembername))
if (!m->type->subtype || strcmp(m->name, idmembername) != 0)
continue;
if (m->type->constraint &&
m->type->constraint->ctype == CT_TABLE_CONSTRAINT)
@@ -1040,7 +1040,7 @@ define_open_type(int level, const char *newbasename, const char *name, const cha
newbasename);
for (i = 0; i < nobjs; i++) {
HEIM_TAILQ_FOREACH(of, objects[i]->objfields, objfields) {
if (strcmp(of->name, typeidfield->name))
if (strcmp(of->name, typeidfield->name) != 0)
continue;
if (!of->value || !of->value->s)
errx(1, "Unknown value in value field %s of object %s",
@@ -1060,7 +1060,7 @@ define_open_type(int level, const char *newbasename, const char *name, const cha
HEIM_TAILQ_FOREACH(of, objects[i]->objfields, objfields) {
char *n = NULL;
if (strcmp(of->name, opentypefield->name))
if (strcmp(of->name, opentypefield->name) != 0)
continue;
if (!of->type || (!of->type->symbol && of->type->type != TTag) ||
of->type->tag.tagclass != ASN1_C_UNIV) {
@@ -1631,7 +1631,8 @@ generate_type_header (const Symbol *s)
t = s->type->symbol->type;
}
if (t->type == TType && t->symbol && strcmp(t->symbol->name, "HEIM_ANY")) {
if (t->type == TType && t->symbol &&
strcmp(t->symbol->name, "HEIM_ANY") != 0) {
/*
* This type is ultimately an alias of an imported type, so we don't
* know its outermost tag here.