Fix MODE=optlinux and MODE=tiny builds

test/libc/calls/stackoverflow1_test.c

@@ -80,19 +80,19 @@ void SetUp(void) {
   sigaction(SIGSEGV, &sa, 0);
 }
 
-int StackOverflow(void);
-int (*pStackOverflow)(void) = StackOverflow;
-int StackOverflow(void) {
-  return pStackOverflow();
+int StackOverflow(int d) {
+  char A[8];
+  for (int i = 0; i < sizeof(A); i++)
+    A[i] = d + i;
+  if (__veil("r", d))
+    return StackOverflow(d + 1) + A[d % sizeof(A)];
+  return 0;
 }
 
 TEST(stackoverflow, standardStack_altStack_process_longjmp) {
-  if (IsTiny())
-    return;  // TODO(jart): why?
-
   int jumpcode;
   if (!(jumpcode = setjmp(recover))) {
-    exit(pStackOverflow());
+    exit(StackOverflow(0));
   }
   ASSERT_EQ(123, jumpcode);
   ASSERT_TRUE(smashed_stack);

test/libc/calls/stackoverflow2_test.c

@@ -51,10 +51,13 @@ void CrashHandler(int sig, siginfo_t *si, void *ctx) {
   longjmp(recover, 123);
 }
 
-int StackOverflow(void);
-int (*pStackOverflow)(void) = StackOverflow;
-int StackOverflow(void) {
-  return pStackOverflow();
+int StackOverflow(int d) {
+  char A[8];
+  for (int i = 0; i < sizeof(A); i++)
+    A[i] = d + i;
+  if (__veil("r", d))
+    return StackOverflow(d + 1) + A[d % sizeof(A)];
+  return 0;
 }
 
 void *MyPosixThread(void *arg) {
@@ -71,7 +74,7 @@ void *MyPosixThread(void *arg) {
   sigaction(SIGBUS, &sa, &o1);
   sigaction(SIGSEGV, &sa, &o2);
   if (!(jumpcode = setjmp(recover))) {
-    exit(pStackOverflow());
+    exit(StackOverflow(0));
   }
   ASSERT_EQ(123, jumpcode);
   sigaction(SIGSEGV, &o2, 0);

test/libc/calls/stackoverflow3_test.c

@@ -85,10 +85,13 @@ void CrashHandler(int sig, siginfo_t *si, void *arg) {
 #endif
 }
 
-int StackOverflow(void);
-int (*pStackOverflow)(void) = StackOverflow;
-int StackOverflow(void) {
-  return pStackOverflow();
+int StackOverflow(int d) {
+  char A[8];
+  for (int i = 0; i < sizeof(A); i++)
+    A[i] = d + i;
+  if (__veil("r", d))
+    return StackOverflow(d + 1) + A[d % sizeof(A)];
+  return 0;
 }
 
 void *MyPosixThread(void *arg) {
@@ -103,7 +106,7 @@ void *MyPosixThread(void *arg) {
   sa.sa_sigaction = CrashHandler;
   sigaction(SIGBUS, &sa, 0);
   sigaction(SIGSEGV, &sa, 0);
-  exit(pStackOverflow());
+  exit(StackOverflow(0));
   return 0;
 }
 

test/libc/calls/stackoverflow4_test.c

@@ -45,10 +45,13 @@ void CrashHandler(int sig) {
   pthread_exit((void *)123L);
 }
 
-int StackOverflow(void);
-int (*pStackOverflow)(void) = StackOverflow;
-int StackOverflow(void) {
-  return pStackOverflow();
+int StackOverflow(int d) {
+  char A[8];
+  for (int i = 0; i < sizeof(A); i++)
+    A[i] = d + i;
+  if (__veil("r", d))
+    return StackOverflow(d + 1) + A[d % sizeof(A)];
+  return 0;
 }
 
 void *MyPosixThread(void *arg) {
@@ -63,7 +66,7 @@ void *MyPosixThread(void *arg) {
   sa.sa_handler = CrashHandler;
   sigaction(SIGBUS, &sa, 0);
   sigaction(SIGSEGV, &sa, 0);
-  exit(pStackOverflow());
+  exit(StackOverflow(0));
   return 0;
 }
 

test/libc/calls/stackoverflow5_test.c

@@ -34,14 +34,17 @@ void CrashHandler(int sig) {
   pthread_exit(0);
 }
 
-int StackOverflow(void);
-int (*pStackOverflow)(void) = StackOverflow;
-int StackOverflow(void) {
-  return pStackOverflow();
+int StackOverflow(int d) {
+  char A[8];
+  for (int i = 0; i < sizeof(A); i++)
+    A[i] = d + i;
+  if (__veil("r", d))
+    return StackOverflow(d + 1) + A[d % sizeof(A)];
+  return 0;
 }
 
 void *MyPosixThread(void *arg) {
-  exit(pStackOverflow());
+  exit(StackOverflow(0));
   return 0;
 }
 

test/libc/log/backtrace.c

@@ -20,6 +20,7 @@
 #include "libc/intrin/weaken.h"
 #include "libc/limits.h"
 #include "libc/log/log.h"
+#include "libc/macros.internal.h"
 #include "libc/mem/leaks.h"
 #include "libc/mem/mem.h"
 #include "libc/runtime/internal.h"
@@ -28,8 +29,15 @@
 #include "libc/str/str.h"
 #ifdef __x86_64__
 
-int StackOverflow(void) {
-  return _weaken(StackOverflow)();
+#include <stdlib.h>
+
+int StackOverflow(int d) {
+  char A[8];
+  for (int i = 0; i < sizeof(A); i++)
+    A[i] = d + i;
+  if (__veil("r", d))
+    return StackOverflow(d + 1) + A[d % sizeof(A)];
+  return 0;
 }
 
 void FpuCrash(void) {
@@ -85,14 +93,21 @@ int NpeCrash(char *p) {
   return *p;
 }
 
+int StackOverflowCrash(int d) {
+  char A[8];
+  for (int i = 0; i < sizeof(A); i++)
+    A[i] = d + i;
+  if (__veil("r", d))
+    return StackOverflowCrash(d + 1) + A[d % sizeof(A)];
+  return 0;
+}
+
 void (*pFpuCrash)(void) = FpuCrash;
 void (*pBssOverrunCrash)(int) = BssOverrunCrash;
 void (*pDataOverrunCrash)(int) = DataOverrunCrash;
 int (*pRodataOverrunCrash)(int) = RodataOverrunCrash;
-char *(*pStackOverrunCrash)(int) = StackOverrunCrash;
 char *(*pMemoryLeakCrash)(void) = MemoryLeakCrash;
 int (*pNpeCrash)(char *) = NpeCrash;
-int (*pStackOverflow)(void) = StackOverflow;
 
 int main(int argc, char *argv[]) {
   ShowCrashReports();
@@ -112,7 +127,7 @@ int main(int argc, char *argv[]) {
         pDataOverrunCrash(10 + 1);
         exit(0);
       case 5:
-        exit((intptr_t)pStackOverrunCrash(10 + 10000));
+        exit(StackOverflowCrash(0));
       case 6:
         exit((intptr_t)pMemoryLeakCrash());
       case 7:
@@ -120,7 +135,7 @@ int main(int argc, char *argv[]) {
       case 8:
         exit(pNpeCrash(0));
       case 9:
-        exit(pStackOverflow());
+        exit(StackOverflow(0));
       default:
         fputs("error: unrecognized argument\n", stderr);
         exit(1);

third_party/libcxx/ryu/d2s.cpp

@@ -477,7 +477,7 @@ struct __floating_decimal_64 {
           2882303761517u, 576460752303u, 115292150460u, 23058430092u, 4611686018u, 922337203u, 184467440u,
           36893488u, 7378697u, 1475739u, 295147u, 59029u, 11805u, 2361u, 472u, 94u, 18u, 3u };
 
-        unsigned long _Trailing_zero_bits;
+        unsigned long _Trailing_zero_bits = 0;
 #ifdef _LIBCPP_HAS_BITSCAN64
         (void) _BitScanForward64(&_Trailing_zero_bits, __v.__mantissa); // __v.__mantissa is guaranteed nonzero
 #else // ^^^ 64-bit ^^^ / vvv 32-bit vvv

third_party/libcxx/string

@@ -1883,7 +1883,10 @@ private:
 #endif
 
     for (; __first != __last; ++__first)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
       traits_type::assign(*__dest++, *__first);
+#pragma GCC diagnostic pop
     return __dest;
   }
 

third_party/pcre/pcre2_compile.c

@@ -8169,7 +8169,10 @@ if (*code == OP_CBRA)
   capitem.number = capnumber;
   capitem.next = cb->open_caps;
   capitem.assert_depth = cb->assert_depth;
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdangling-pointer"
   cb->open_caps = &capitem;
+#pragma GCC diagnostic pop
   }
 
 /* Offset is set zero to mark that this bracket is still open */

third_party/stb/stb_image.c

@@ -4211,9 +4211,12 @@ static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) {
               tc16[k] = (uint16_t)stbi__get16be(s);  // copy the values as-is
           } else {
             for (k = 0; k < s->img_n; ++k)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstringop-overflow"
               tc[k] = (unsigned char)(stbi__get16be(s) & 255) *
                       stbi__depth_scale_table[z->depth];  // non 8-bit images
                                                           // will be larger
+#pragma GCC diagnostic pop
           }
         }
         break;

third_party/tidy/tidy.c

@@ -1202,7 +1202,10 @@ static tmbstr cleanup_description( ctmbstr description )
                             name = realloc(name, l_name);
                         }
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstringop-truncation"
                         strncpy(name + i_name, &c, 1);
+#pragma GCC diagnostic pop
                         i_name++;
                         i++;
                         break;

tool/build/pledge.c

@@ -653,8 +653,8 @@ int main(int argc, char *argv[]) {
   bool hasfunbits;
   int useruid, usergid;
   int owneruid, ownergid;
-  int oldfsuid, oldfsgid;
   unsigned long ipromises;
+  int oldfsuid = 0, oldfsgid = 0;
 
   // parse flags
   GetOpts(argc, argv);