Tweak WUFFS_BASE__FALLTHROUGH comment
diff --git a/internal/cgen/base/fundamental-private.h b/internal/cgen/base/fundamental-private.h
index 8fce6f2..8247011 100644
--- a/internal/cgen/base/fundamental-private.h
+++ b/internal/cgen/base/fundamental-private.h
@@ -31,10 +31,10 @@
// Denote intentional fallthroughs for -Wimplicit-fallthrough.
//
-// As noted on
-// https:// gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html ,
-// combining the two tests in one conditional would not be portable.
-#if defined __has_attribute
+// The two #if lines are deliberately separate. Combining the two conditions
+// into a single "#if foo && bar" line would not be portable. See
+// https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html
+#if defined(__has_attribute)
#if __has_attribute(fallthrough)
#define WUFFS_BASE__FALLTHROUGH __attribute__((fallthrough))
#else
diff --git a/internal/cgen/data/data.go b/internal/cgen/data/data.go
index 16a3420..8896bbd 100644
--- a/internal/cgen/data/data.go
+++ b/internal/cgen/data/data.go
@@ -29,9 +29,9 @@
""
const BaseFundamentalPrivateH = "" +
- "// ---------------- Fundamentals\n\n// WUFFS_BASE__MAGIC is a magic number to check that initializers are called.\n// It's not foolproof, given C doesn't automatically zero memory before use,\n// but it should catch 99.99% of cases.\n//\n// Its (non-zero) value is arbitrary, based on md5sum(\"wuffs\").\n#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71)\n\n// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable\n// error was previously encountered.\n//\n// Its (non-zero) value is arbitrary, based on md5sum(\"disabled\").\n#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2)\n\n// Denote intentional fallthroughs for -Wimplicit-fallthrough.\n//\n// As noted on\n// https:// gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html ,\n// combining the two tests in one conditional would not be portable.\n#if defined __has_attribute\n#if __has_attribute(fallthrough)\n#define WUFFS_BASE__FALLTHROUGH __attribute__((fallthrough))\n#else\n#define WUFFS_BASE__FALLTHROUGH\n#endif\n#else\n#define WUFFS_BASE__FALLTHROUGH\n#endif\n\n// U" +
- "se switch cases for coroutine suspension points, similar to the technique\n// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html\n//\n// We use trivial macros instead of an explicit assignment and case statement\n// so that clang-format doesn't get confused by the unusual \"case\"s.\n#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:;\n#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \\\n coro_susp_point = n; \\\n WUFFS_BASE__FALLTHROUGH; \\\n case n:;\n\n#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \\\n if (!status.repr) { \\\n goto ok; \\\n } else if (*status.repr != '$') { \\\n goto exit; \\\n } \\\n coro_susp_point = n; \\\n goto suspend; " +
- " \\\n case n:;\n\n// Clang also defines \"__GNUC__\".\n#if defined(__GNUC__)\n#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1))\n#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0))\n#else\n#define WUFFS_BASE__LIKELY(expr) (expr)\n#define WUFFS_BASE__UNLIKELY(expr) (expr)\n#endif\n\n" +
+ "// ---------------- Fundamentals\n\n// WUFFS_BASE__MAGIC is a magic number to check that initializers are called.\n// It's not foolproof, given C doesn't automatically zero memory before use,\n// but it should catch 99.99% of cases.\n//\n// Its (non-zero) value is arbitrary, based on md5sum(\"wuffs\").\n#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71)\n\n// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable\n// error was previously encountered.\n//\n// Its (non-zero) value is arbitrary, based on md5sum(\"disabled\").\n#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2)\n\n// Denote intentional fallthroughs for -Wimplicit-fallthrough.\n//\n// The two #if lines are deliberately separate. Combining the two conditions\n// into a single \"#if foo && bar\" line would not be portable. See\n// https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html\n#if defined(__has_attribute)\n#if __has_attribute(fallthrough)\n#define WUFFS_BASE__FALLTHROUGH __attribute__((fallthrough))\n#else\n#define WUFFS_BASE__FALLTHROUGH\n" +
+ "#endif\n#else\n#define WUFFS_BASE__FALLTHROUGH\n#endif\n\n// Use switch cases for coroutine suspension points, similar to the technique\n// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html\n//\n// We use trivial macros instead of an explicit assignment and case statement\n// so that clang-format doesn't get confused by the unusual \"case\"s.\n#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:;\n#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \\\n coro_susp_point = n; \\\n WUFFS_BASE__FALLTHROUGH; \\\n case n:;\n\n#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \\\n if (!status.repr) { \\\n goto ok; \\\n } else if (*status.repr != '$') { \\\n goto exit; \\\n } \\\n coro_susp_point = n; " +
+ " \\\n goto suspend; \\\n case n:;\n\n// Clang also defines \"__GNUC__\".\n#if defined(__GNUC__)\n#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1))\n#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0))\n#else\n#define WUFFS_BASE__LIKELY(expr) (expr)\n#define WUFFS_BASE__UNLIKELY(expr) (expr)\n#endif\n\n" +
"" +
"// --------\n\nstatic inline wuffs_base__empty_struct //\nwuffs_base__ignore_status(wuffs_base__status z) {\n return wuffs_base__make_empty_struct();\n}\n\nstatic inline wuffs_base__status //\nwuffs_base__status__ensure_not_a_suspension(wuffs_base__status z) {\n if (z.repr && (*z.repr == '$')) {\n z.repr = wuffs_base__error__cannot_return_a_suspension;\n }\n return z;\n}\n\n" +
"" +
diff --git a/release/c/wuffs-unsupported-snapshot.c b/release/c/wuffs-unsupported-snapshot.c
index c3eddad..584d0be 100644
--- a/release/c/wuffs-unsupported-snapshot.c
+++ b/release/c/wuffs-unsupported-snapshot.c
@@ -10111,10 +10111,10 @@
// Denote intentional fallthroughs for -Wimplicit-fallthrough.
//
-// As noted on
-// https:// gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html ,
-// combining the two tests in one conditional would not be portable.
-#if defined __has_attribute
+// The two #if lines are deliberately separate. Combining the two conditions
+// into a single "#if foo && bar" line would not be portable. See
+// https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html
+#if defined(__has_attribute)
#if __has_attribute(fallthrough)
#define WUFFS_BASE__FALLTHROUGH __attribute__((fallthrough))
#else
