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authorVincent Ambo <Vincent Ambo>2020-01-11T23·36+0000
committerVincent Ambo <Vincent Ambo>2020-01-11T23·40+0000
commit7ef0d62730840ded097b524104cc0a0904591a63 (patch)
treea670f96103667aeca4789a95d94ca0dff550c4ce /third_party/git/banned.h
parent6a2a3007077818e24a3d56fc492ada9206a10cf0 (diff)
parent1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5 (diff)
merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373
Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'
Diffstat (limited to 'third_party/git/banned.h')
-rw-r--r--third_party/git/banned.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/third_party/git/banned.h b/third_party/git/banned.h
new file mode 100644
index 000000000000..447af24807f4
--- /dev/null
+++ b/third_party/git/banned.h
@@ -0,0 +1,32 @@
+#ifndef BANNED_H
+#define BANNED_H
+
+/*
+ * This header lists functions that have been banned from our code base,
+ * because they're too easy to misuse (and even if used correctly,
+ * complicate audits). Including this header turns them into compile-time
+ * errors.
+ */
+
+#define BANNED(func) sorry_##func##_is_a_banned_function
+
+#undef strcpy
+#define strcpy(x,y) BANNED(strcpy)
+#undef strcat
+#define strcat(x,y) BANNED(strcat)
+#undef strncpy
+#define strncpy(x,y,n) BANNED(strncpy)
+#undef strncat
+#define strncat(x,y,n) BANNED(strncat)
+
+#undef sprintf
+#undef vsprintf
+#ifdef HAVE_VARIADIC_MACROS
+#define sprintf(...) BANNED(sprintf)
+#define vsprintf(...) BANNED(vsprintf)
+#else
+#define sprintf(buf,fmt,arg) BANNED(sprintf)
+#define vsprintf(buf,fmt,arg) BANNED(sprintf)
+#endif
+
+#endif /* BANNED_H */