summaryrefslogtreecommitdiffstats
path: root/build/clang-plugin/tests/TestSprintfLiteral.cpp
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /build/clang-plugin/tests/TestSprintfLiteral.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'build/clang-plugin/tests/TestSprintfLiteral.cpp')
-rw-r--r--build/clang-plugin/tests/TestSprintfLiteral.cpp41
1 files changed, 41 insertions, 0 deletions
diff --git a/build/clang-plugin/tests/TestSprintfLiteral.cpp b/build/clang-plugin/tests/TestSprintfLiteral.cpp
new file mode 100644
index 0000000000..3c54ce004f
--- /dev/null
+++ b/build/clang-plugin/tests/TestSprintfLiteral.cpp
@@ -0,0 +1,41 @@
+#include <cstdio>
+
+void bad() {
+ char x[100];
+ snprintf(x, sizeof(x), "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
+ snprintf(x, 100, "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
+ const int hundred = 100;
+ snprintf(x, hundred, "bar"); // expected-error {{Use SprintfLiteral instead of snprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to snprintf accidentally.}}
+}
+
+void ok() {
+ char x[100];
+ int y;
+ snprintf(x, sizeof(y), "foo");
+
+ snprintf(x, 50, "foo");
+
+ int nothundred = 100;
+ nothundred = 99;
+ snprintf(x, nothundred, "foo");
+}
+
+void vargs_bad(va_list args) {
+ char x[100];
+ vsnprintf(x, sizeof(x), "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
+ vsnprintf(x, 100, "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
+ const int hundred = 100;
+ vsnprintf(x, hundred, "bar", args); // expected-error {{Use VsprintfLiteral instead of vsnprintf when writing into a character array.}} expected-note {{This will prevent passing in the wrong size to vsnprintf accidentally.}}
+}
+
+void vargs_good(va_list args) {
+ char x[100];
+ int y;
+ vsnprintf(x, sizeof(y), "foo", args);
+
+ vsnprintf(x, 50, "foo", args);
+
+ int nothundred = 100;
+ nothundred = 99;
+ vsnprintf(x, nothundred, "foo", args);
+}