diff --git a/internal/cgen/base/intconv-submodule.c b/internal/cgen/base/intconv-submodule.c
index 34a81f2..859594e 100644
--- a/internal/cgen/base/intconv-submodule.c
+++ b/internal/cgen/base/intconv-submodule.c
@@ -147,7 +147,7 @@
       } else if (r.value == 0x8000000000000000) {
         wuffs_base__result_i64 ret;
         ret.status.repr = NULL;
-        ret.value = -0x8000000000000000;
+        ret.value = INT64_MIN;
         return ret;
       }
       goto fail_out_of_bounds;
diff --git a/internal/cgen/data/data.go b/internal/cgen/data/data.go
index aef0227..d35e719 100644
--- a/internal/cgen/data/data.go
+++ b/internal/cgen/data/data.go
@@ -524,11 +524,11 @@
 	"0, 0x00, 0x00, 0x00,  // 0xF0 ..= 0xF7.\n    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // 0xF8 ..= 0xFF.\n    // 0     1     2     3     4     5     6     7\n    // 8     9     A     B     C     D     E     F\n};\n\nstatic const uint8_t wuffs_base__private_implementation__encode_base16[16] = {\n    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,  // 0x00 ..= 0x07.\n    0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,  // 0x08 ..= 0x0F.\n};\n\n" +
 	"" +
 	"// --------\n\nWUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64  //\nwuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) {\n  uint8_t* p = s.ptr;\n  uint8_t* q = s.ptr + s.len;\n\n  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n    for (; (p < q) && (*p == '_'); p++) {\n    }\n  }\n\n  bool negative = false;\n  if (p >= q) {\n    goto fail_bad_argument;\n  } else if (*p == '-') {\n    p++;\n    negative = true;\n  } else if (*p == '+') {\n    p++;\n  }\n\n  do {\n    wuffs_base__result_u64 r = wuffs_base__parse_number_u64(\n        wuffs_base__make_slice_u8(p, (size_t)(q - p)), options);\n    if (r.status.repr != NULL) {\n      wuffs_base__result_i64 ret;\n      ret.status.repr = r.status.repr;\n      ret.value = 0;\n      return ret;\n    } else if (negative) {\n      if (r.value < 0x8000000000000000) {\n        wuffs_base__result_i64 ret;\n        ret.status.repr = NULL;\n        ret.value = -(int64_t)(r.value);\n        return ret;\n      } else if (r.value == 0x8000000000000000) {\n        wuffs_base__re" +
-	"sult_i64 ret;\n        ret.status.repr = NULL;\n        ret.value = -0x8000000000000000;\n        return ret;\n      }\n      goto fail_out_of_bounds;\n    } else if (r.value > 0x7FFFFFFFFFFFFFFF) {\n      goto fail_out_of_bounds;\n    } else {\n      wuffs_base__result_i64 ret;\n      ret.status.repr = NULL;\n      ret.value = +(int64_t)(r.value);\n      return ret;\n    }\n  } while (0);\n\nfail_bad_argument:\n  do {\n    wuffs_base__result_i64 ret;\n    ret.status.repr = wuffs_base__error__bad_argument;\n    ret.value = 0;\n    return ret;\n  } while (0);\n\nfail_out_of_bounds:\n  do {\n    wuffs_base__result_i64 ret;\n    ret.status.repr = wuffs_base__error__out_of_bounds;\n    ret.value = 0;\n    return ret;\n  } while (0);\n}\n\nWUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64  //\nwuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) {\n  uint8_t* p = s.ptr;\n  uint8_t* q = s.ptr + s.len;\n\n  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n    for (; (p < q) && (*p == '_'); p++) {\n    }\n  }\n\n  if (p >= q) " +
-	"{\n    goto fail_bad_argument;\n\n  } else if (*p == '0') {\n    p++;\n    if (p >= q) {\n      goto ok_zero;\n    }\n    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n      if (*p == '_') {\n        p++;\n        for (; p < q; p++) {\n          if (*p != '_') {\n            if (options &\n                WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {\n              goto decimal;\n            }\n            goto fail_bad_argument;\n          }\n        }\n        goto ok_zero;\n      }\n    }\n\n    if ((*p == 'x') || (*p == 'X')) {\n      p++;\n      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n        for (; (p < q) && (*p == '_'); p++) {\n        }\n      }\n      if (p < q) {\n        goto hexadecimal;\n      }\n\n    } else if ((*p == 'd') || (*p == 'D')) {\n      p++;\n      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n        for (; (p < q) && (*p == '_'); p++) {\n        }\n      }\n      if (p < q) {\n        goto decimal;\n      }\n    }\n\n    if (options & WUFFS_BA" +
-	"SE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {\n      goto decimal;\n    }\n    goto fail_bad_argument;\n  }\n\ndecimal:\n  do {\n    uint64_t v = wuffs_base__parse_number__decimal_digits[*p++];\n    if (v == 0) {\n      goto fail_bad_argument;\n    }\n    v &= 0x0F;\n\n    // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1).\n    const uint64_t max10 = 1844674407370955161u;\n    const uint8_t max1 = 5;\n\n    for (; p < q; p++) {\n      if ((*p == '_') &&\n          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {\n        continue;\n      }\n      uint8_t digit = wuffs_base__parse_number__decimal_digits[*p];\n      if (digit == 0) {\n        goto fail_bad_argument;\n      }\n      digit &= 0x0F;\n      if ((v > max10) || ((v == max10) && (digit > max1))) {\n        goto fail_out_of_bounds;\n      }\n      v = (10 * v) + ((uint64_t)(digit));\n    }\n\n    wuffs_base__result_u64 ret;\n    ret.status.repr = NULL;\n    ret.value = v;\n    return ret;\n  } while (0);\n\nhexadecimal:\n  do {\n    uint64_t v = wuffs" +
-	"_base__parse_number__hexadecimal_digits[*p++];\n    if (v == 0) {\n      goto fail_bad_argument;\n    }\n    v &= 0x0F;\n\n    for (; p < q; p++) {\n      if ((*p == '_') &&\n          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {\n        continue;\n      }\n      uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p];\n      if (digit == 0) {\n        goto fail_bad_argument;\n      }\n      digit &= 0x0F;\n      if ((v >> 60) != 0) {\n        goto fail_out_of_bounds;\n      }\n      v = (v << 4) | ((uint64_t)(digit));\n    }\n\n    wuffs_base__result_u64 ret;\n    ret.status.repr = NULL;\n    ret.value = v;\n    return ret;\n  } while (0);\n\nok_zero:\n  do {\n    wuffs_base__result_u64 ret;\n    ret.status.repr = NULL;\n    ret.value = 0;\n    return ret;\n  } while (0);\n\nfail_bad_argument:\n  do {\n    wuffs_base__result_u64 ret;\n    ret.status.repr = wuffs_base__error__bad_argument;\n    ret.value = 0;\n    return ret;\n  } while (0);\n\nfail_out_of_bounds:\n  do {\n    wuffs_base__result_u64 ret;\n    ret.status.repr = " +
-	"wuffs_base__error__out_of_bounds;\n    ret.value = 0;\n    return ret;\n  } while (0);\n}\n\n" +
+	"sult_i64 ret;\n        ret.status.repr = NULL;\n        ret.value = INT64_MIN;\n        return ret;\n      }\n      goto fail_out_of_bounds;\n    } else if (r.value > 0x7FFFFFFFFFFFFFFF) {\n      goto fail_out_of_bounds;\n    } else {\n      wuffs_base__result_i64 ret;\n      ret.status.repr = NULL;\n      ret.value = +(int64_t)(r.value);\n      return ret;\n    }\n  } while (0);\n\nfail_bad_argument:\n  do {\n    wuffs_base__result_i64 ret;\n    ret.status.repr = wuffs_base__error__bad_argument;\n    ret.value = 0;\n    return ret;\n  } while (0);\n\nfail_out_of_bounds:\n  do {\n    wuffs_base__result_i64 ret;\n    ret.status.repr = wuffs_base__error__out_of_bounds;\n    ret.value = 0;\n    return ret;\n  } while (0);\n}\n\nWUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64  //\nwuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) {\n  uint8_t* p = s.ptr;\n  uint8_t* q = s.ptr + s.len;\n\n  if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n    for (; (p < q) && (*p == '_'); p++) {\n    }\n  }\n\n  if (p >= q) {\n    goto" +
+	" fail_bad_argument;\n\n  } else if (*p == '0') {\n    p++;\n    if (p >= q) {\n      goto ok_zero;\n    }\n    if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n      if (*p == '_') {\n        p++;\n        for (; p < q; p++) {\n          if (*p != '_') {\n            if (options &\n                WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {\n              goto decimal;\n            }\n            goto fail_bad_argument;\n          }\n        }\n        goto ok_zero;\n      }\n    }\n\n    if ((*p == 'x') || (*p == 'X')) {\n      p++;\n      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n        for (; (p < q) && (*p == '_'); p++) {\n        }\n      }\n      if (p < q) {\n        goto hexadecimal;\n      }\n\n    } else if ((*p == 'd') || (*p == 'D')) {\n      p++;\n      if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {\n        for (; (p < q) && (*p == '_'); p++) {\n        }\n      }\n      if (p < q) {\n        goto decimal;\n      }\n    }\n\n    if (options & WUFFS_BASE__PARSE_" +
+	"NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {\n      goto decimal;\n    }\n    goto fail_bad_argument;\n  }\n\ndecimal:\n  do {\n    uint64_t v = wuffs_base__parse_number__decimal_digits[*p++];\n    if (v == 0) {\n      goto fail_bad_argument;\n    }\n    v &= 0x0F;\n\n    // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1).\n    const uint64_t max10 = 1844674407370955161u;\n    const uint8_t max1 = 5;\n\n    for (; p < q; p++) {\n      if ((*p == '_') &&\n          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {\n        continue;\n      }\n      uint8_t digit = wuffs_base__parse_number__decimal_digits[*p];\n      if (digit == 0) {\n        goto fail_bad_argument;\n      }\n      digit &= 0x0F;\n      if ((v > max10) || ((v == max10) && (digit > max1))) {\n        goto fail_out_of_bounds;\n      }\n      v = (10 * v) + ((uint64_t)(digit));\n    }\n\n    wuffs_base__result_u64 ret;\n    ret.status.repr = NULL;\n    ret.value = v;\n    return ret;\n  } while (0);\n\nhexadecimal:\n  do {\n    uint64_t v = wuffs_base__par" +
+	"se_number__hexadecimal_digits[*p++];\n    if (v == 0) {\n      goto fail_bad_argument;\n    }\n    v &= 0x0F;\n\n    for (; p < q; p++) {\n      if ((*p == '_') &&\n          (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {\n        continue;\n      }\n      uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p];\n      if (digit == 0) {\n        goto fail_bad_argument;\n      }\n      digit &= 0x0F;\n      if ((v >> 60) != 0) {\n        goto fail_out_of_bounds;\n      }\n      v = (v << 4) | ((uint64_t)(digit));\n    }\n\n    wuffs_base__result_u64 ret;\n    ret.status.repr = NULL;\n    ret.value = v;\n    return ret;\n  } while (0);\n\nok_zero:\n  do {\n    wuffs_base__result_u64 ret;\n    ret.status.repr = NULL;\n    ret.value = 0;\n    return ret;\n  } while (0);\n\nfail_bad_argument:\n  do {\n    wuffs_base__result_u64 ret;\n    ret.status.repr = wuffs_base__error__bad_argument;\n    ret.value = 0;\n    return ret;\n  } while (0);\n\nfail_out_of_bounds:\n  do {\n    wuffs_base__result_u64 ret;\n    ret.status.repr = wuffs_base" +
+	"__error__out_of_bounds;\n    ret.value = 0;\n    return ret;\n  } while (0);\n}\n\n" +
 	"" +
 	"// --------\n\n// wuffs_base__render_number__first_hundred contains the decimal encodings of\n// the first one hundred numbers [0 ..= 99].\nstatic const uint8_t wuffs_base__render_number__first_hundred[200] = {\n    '0', '0', '0', '1', '0', '2', '0', '3', '0', '4',  //\n    '0', '5', '0', '6', '0', '7', '0', '8', '0', '9',  //\n    '1', '0', '1', '1', '1', '2', '1', '3', '1', '4',  //\n    '1', '5', '1', '6', '1', '7', '1', '8', '1', '9',  //\n    '2', '0', '2', '1', '2', '2', '2', '3', '2', '4',  //\n    '2', '5', '2', '6', '2', '7', '2', '8', '2', '9',  //\n    '3', '0', '3', '1', '3', '2', '3', '3', '3', '4',  //\n    '3', '5', '3', '6', '3', '7', '3', '8', '3', '9',  //\n    '4', '0', '4', '1', '4', '2', '4', '3', '4', '4',  //\n    '4', '5', '4', '6', '4', '7', '4', '8', '4', '9',  //\n    '5', '0', '5', '1', '5', '2', '5', '3', '5', '4',  //\n    '5', '5', '5', '6', '5', '7', '5', '8', '5', '9',  //\n    '6', '0', '6', '1', '6', '2', '6', '3', '6', '4',  //\n    '6', '5', '6', '6', '6', '7', '6', '8', '6', '9',  //\n    '" +
 	"7', '0', '7', '1', '7', '2', '7', '3', '7', '4',  //\n    '7', '5', '7', '6', '7', '7', '7', '8', '7', '9',  //\n    '8', '0', '8', '1', '8', '2', '8', '3', '8', '4',  //\n    '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',  //\n    '9', '0', '9', '1', '9', '2', '9', '3', '9', '4',  //\n    '9', '5', '9', '6', '9', '7', '9', '8', '9', '9',  //\n};\n\nstatic size_t  //\nwuffs_base__private_implementation__render_number_u64(wuffs_base__slice_u8 dst,\n                                                      uint64_t x,\n                                                      uint32_t options,\n                                                      bool neg) {\n  uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL];\n  uint8_t* ptr = &buf[0] + sizeof(buf);\n\n  while (x >= 100) {\n    size_t index = ((size_t)((x % 100) * 2));\n    x /= 100;\n    uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];\n    uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];\n    ptr -= 2;\n    ptr[0] = s0;\n    ptr[1] = s1;\n  }\n\n  if " +
diff --git a/release/c/wuffs-unsupported-snapshot.c b/release/c/wuffs-unsupported-snapshot.c
index 9370e9c..0d2f31e 100644
--- a/release/c/wuffs-unsupported-snapshot.c
+++ b/release/c/wuffs-unsupported-snapshot.c
@@ -14281,7 +14281,7 @@
       } else if (r.value == 0x8000000000000000) {
         wuffs_base__result_i64 ret;
         ret.status.repr = NULL;
-        ret.value = -0x8000000000000000;
+        ret.value = INT64_MIN;
         return ret;
       }
       goto fail_out_of_bounds;