Files
RedBear-OS/local/recipes/dev/libclc/source/clang/test/Analysis/std-c-library-functions.c
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class)
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

247 lines
8.4 KiB
C

// RUN: %clang_analyze_cc1 %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=unix.StdCLibraryFunctions \
// RUN: -analyzer-checker=debug.ExprInspection \
// RUN: -analyzer-config eagerly-assume=false \
// RUN: -analyzer-config unix.StdCLibraryFunctions:ModelPOSIX=false \
// RUN: -triple i686-unknown-linux \
// RUN: -verify
// RUN: %clang_analyze_cc1 %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=unix.StdCLibraryFunctions \
// RUN: -analyzer-checker=debug.ExprInspection \
// RUN: -analyzer-config eagerly-assume=false \
// RUN: -analyzer-config unix.StdCLibraryFunctions:ModelPOSIX=false \
// RUN: -triple x86_64-unknown-linux \
// RUN: -verify
// RUN: %clang_analyze_cc1 %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=unix.StdCLibraryFunctions \
// RUN: -analyzer-checker=debug.ExprInspection \
// RUN: -analyzer-config eagerly-assume=false \
// RUN: -analyzer-config unix.StdCLibraryFunctions:ModelPOSIX=false \
// RUN: -triple armv7-a15-linux \
// RUN: -verify
// RUN: %clang_analyze_cc1 %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=unix.StdCLibraryFunctions \
// RUN: -analyzer-checker=debug.ExprInspection \
// RUN: -analyzer-config eagerly-assume=false \
// RUN: -analyzer-config unix.StdCLibraryFunctions:ModelPOSIX=false \
// RUN: -triple thumbv7-a15-linux \
// RUN: -verify
// RUN: %clang_analyze_cc1 %s \
// RUN: -analyzer-checker=core \
// RUN: -analyzer-checker=unix.StdCLibraryFunctions \
// RUN: -analyzer-config unix.StdCLibraryFunctions:DisplayLoadedSummaries=true \
// RUN: -analyzer-checker=debug.ExprInspection \
// RUN: -analyzer-config eagerly-assume=false \
// RUN: -analyzer-config unix.StdCLibraryFunctions:ModelPOSIX=false \
// RUN: -triple i686-unknown-linux 2>&1 | FileCheck %s
// CHECK: Loaded summary for: int isalnum(int)
// CHECK-NEXT: Loaded summary for: int isalpha(int)
// CHECK-NEXT: Loaded summary for: int isascii(int)
// CHECK-NEXT: Loaded summary for: int isblank(int)
// CHECK-NEXT: Loaded summary for: int isdigit(int)
// CHECK-NEXT: Loaded summary for: int isgraph(int)
// CHECK-NEXT: Loaded summary for: int islower(int)
// CHECK-NEXT: Loaded summary for: int isprint(int)
// CHECK-NEXT: Loaded summary for: int ispunct(int)
// CHECK-NEXT: Loaded summary for: int isspace(int)
// CHECK-NEXT: Loaded summary for: int isupper(int)
// CHECK-NEXT: Loaded summary for: int isxdigit(int)
// CHECK-NEXT: Loaded summary for: int toupper(int)
// CHECK-NEXT: Loaded summary for: int tolower(int)
// CHECK-NEXT: Loaded summary for: int toascii(int)
// CHECK-NEXT: Loaded summary for: int getchar(void)
// CHECK-NEXT: Loaded summary for: unsigned int fread(void *restrict, size_t, size_t, FILE *restrict)
// CHECK-NEXT: Loaded summary for: unsigned int fwrite(const void *restrict, size_t, size_t, FILE *restrict)
// CHECK-NEXT: Loaded summary for: ssize_t read(int, void *, size_t)
// CHECK-NEXT: Loaded summary for: ssize_t write(int, const void *, size_t)
// CHECK-NEXT: Loaded summary for: ssize_t getline(char **restrict, size_t *restrict, FILE *restrict)
// CHECK-NEXT: Loaded summary for: ssize_t getdelim(char **restrict, size_t *restrict, int, FILE *restrict)
// CHECK-NEXT: Loaded summary for: char *getenv(const char *)
// CHECK-NEXT: Loaded summary for: int getc(FILE *)
// CHECK-NEXT: Loaded summary for: int fgetc(FILE *)
#include "Inputs/std-c-library-functions.h"
void clang_analyzer_eval(int);
int glob;
void test_getc(FILE *fp) {
int x;
while ((x = getc(fp)) != EOF) {
clang_analyzer_eval(x > 255); // expected-warning{{FALSE}}
clang_analyzer_eval(x >= 0); // expected-warning{{TRUE}}
}
}
void test_fgets(FILE *fp) {
clang_analyzer_eval(fgetc(fp) < 256); // expected-warning{{TRUE}}
clang_analyzer_eval(fgetc(fp) >= 0); // expected-warning{{UNKNOWN}}
}
void test_read_write(int fd, char *buf) {
glob = 1;
ssize_t x = write(fd, buf, 10);
clang_analyzer_eval(glob); // expected-warning{{UNKNOWN}}
if (x >= 0) {
clang_analyzer_eval(x <= 10); // expected-warning{{TRUE}}
ssize_t y = read(fd, &glob, sizeof(glob));
if (y >= 0) {
clang_analyzer_eval(y <= sizeof(glob)); // expected-warning{{TRUE}}
} else {
// -1 overflows on promotion!
clang_analyzer_eval(y <= sizeof(glob)); // expected-warning{{FALSE}}
}
} else {
clang_analyzer_eval(x == -1); // expected-warning{{TRUE}}
}
}
void test_fread_fwrite(FILE *fp, int *buf) {
size_t x = fwrite(buf, sizeof(int), 10, fp);
clang_analyzer_eval(x <= 10); // expected-warning{{TRUE}}
size_t y = fread(buf, sizeof(int), 10, fp);
clang_analyzer_eval(y <= 10); // expected-warning{{TRUE}}
size_t z = fwrite(buf, sizeof(int), y, fp);
clang_analyzer_eval(z <= y); // expected-warning{{TRUE}}
}
void test_fread_uninitialized(void) {
void *ptr;
size_t sz;
size_t nmem;
FILE *fp;
(void)fread(ptr, sz, nmem, fp); // expected-warning {{1st function call argument is an uninitialized value}}
}
void test_getline(FILE *fp) {
char *line = 0;
size_t n = 0;
ssize_t len;
while ((len = getline(&line, &n, fp)) != -1) {
clang_analyzer_eval(len == 0); // expected-warning{{FALSE}}
}
}
void test_isascii(int x) {
clang_analyzer_eval(isascii(123)); // expected-warning{{TRUE}}
clang_analyzer_eval(isascii(-1)); // expected-warning{{FALSE}}
if (isascii(x)) {
clang_analyzer_eval(x < 128); // expected-warning{{TRUE}}
clang_analyzer_eval(x >= 0); // expected-warning{{TRUE}}
} else {
if (x > 42)
clang_analyzer_eval(x >= 128); // expected-warning{{TRUE}}
else
clang_analyzer_eval(x < 0); // expected-warning{{TRUE}}
}
glob = 1;
isascii('a');
clang_analyzer_eval(glob); // expected-warning{{TRUE}}
}
void test_islower(int x) {
clang_analyzer_eval(islower('x')); // expected-warning{{TRUE}}
clang_analyzer_eval(islower('X')); // expected-warning{{FALSE}}
if (islower(x))
clang_analyzer_eval(x < 'a'); // expected-warning{{FALSE}}
}
void test_getchar(void) {
int x = getchar();
if (x == EOF)
return;
clang_analyzer_eval(x < 0); // expected-warning{{FALSE}}
clang_analyzer_eval(x < 256); // expected-warning{{TRUE}}
}
void test_isalpha(void) {
clang_analyzer_eval(isalpha(']')); // expected-warning{{FALSE}}
clang_analyzer_eval(isalpha('Q')); // expected-warning{{TRUE}}
clang_analyzer_eval(isalpha(128)); // expected-warning{{UNKNOWN}}
}
void test_alnum(void) {
clang_analyzer_eval(isalnum('1')); // expected-warning{{TRUE}}
clang_analyzer_eval(isalnum(')')); // expected-warning{{FALSE}}
}
void test_isblank(void) {
clang_analyzer_eval(isblank('\t')); // expected-warning{{TRUE}}
clang_analyzer_eval(isblank(' ')); // expected-warning{{TRUE}}
clang_analyzer_eval(isblank('\n')); // expected-warning{{FALSE}}
}
void test_ispunct(int x) {
clang_analyzer_eval(ispunct(' ')); // expected-warning{{FALSE}}
clang_analyzer_eval(ispunct(-1)); // expected-warning{{FALSE}}
clang_analyzer_eval(ispunct('#')); // expected-warning{{TRUE}}
clang_analyzer_eval(ispunct('_')); // expected-warning{{TRUE}}
if (ispunct(x))
clang_analyzer_eval(x < 127); // expected-warning{{TRUE}}
}
void test_isupper(int x) {
if (isupper(x))
clang_analyzer_eval(x < 'A'); // expected-warning{{FALSE}}
}
void test_isgraph_isprint(int x) {
char y = x;
if (isgraph(y))
clang_analyzer_eval(isprint(x)); // expected-warning{{TRUE}}
}
void test_mixed_branches(int x) {
if (isdigit(x)) {
clang_analyzer_eval(isgraph(x)); // expected-warning{{TRUE}}
clang_analyzer_eval(isblank(x)); // expected-warning{{FALSE}}
} else if (isascii(x)) {
// isalnum() bifurcates here.
clang_analyzer_eval(isalnum(x)); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
clang_analyzer_eval(isprint(x)); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
}
}
void test_isspace(int x) {
if (!isascii(x))
return;
char y = x;
if (y == ' ')
clang_analyzer_eval(isspace(x)); // expected-warning{{TRUE}}
}
void test_isxdigit(int x) {
if (isxdigit(x) && isupper(x)) {
clang_analyzer_eval(x >= 'A'); // expected-warning{{TRUE}}
clang_analyzer_eval(x <= 'F'); // expected-warning{{TRUE}}
}
}
void test_call_by_pointer(void) {
typedef int (*func)(int);
func f = isascii;
clang_analyzer_eval(f('A')); // expected-warning{{TRUE}}
f = ispunct;
clang_analyzer_eval(f('A')); // expected-warning{{FALSE}}
}
void test_getenv(void) {
// getenv() bifurcates here.
clang_analyzer_eval(getenv("FOO") == 0);
// expected-warning@-1 {{TRUE}}
// expected-warning@-2 {{FALSE}}
}