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-rw-r--r--absl/strings/internal/str_format/parser.cc3
-rw-r--r--absl/strings/internal/str_format/parser_test.cc2
2 files changed, 4 insertions, 1 deletions
diff --git a/absl/strings/internal/str_format/parser.cc b/absl/strings/internal/str_format/parser.cc
index 5e3d0d0547d1..10487f23c855 100644
--- a/absl/strings/internal/str_format/parser.cc
+++ b/absl/strings/internal/str_format/parser.cc
@@ -99,10 +99,11 @@ bool ConsumeConversion(string_view *src, UnboundConversion *conv,
     // digit doesn't match the expected characters.
     int num_digits = std::numeric_limits<int>::digits10;
     for (;;) {
-      if (ABSL_PREDICT_FALSE(pos == end || !num_digits)) break;
+      if (ABSL_PREDICT_FALSE(pos == end)) break;
       c = *pos++;
       if (!std::isdigit(c)) break;
       --num_digits;
+      if (ABSL_PREDICT_FALSE(!num_digits)) break;
       digits = 10 * digits + c - '0';
     }
     return digits;
diff --git a/absl/strings/internal/str_format/parser_test.cc b/absl/strings/internal/str_format/parser_test.cc
index ae40203191b9..ff7057534f43 100644
--- a/absl/strings/internal/str_format/parser_test.cc
+++ b/absl/strings/internal/str_format/parser_test.cc
@@ -246,6 +246,8 @@ TEST_F(ConsumeUnboundConversionTest, WidthAndPrecision) {
 
   EXPECT_FALSE(Run("1000000000.999999999d"));
   EXPECT_FALSE(Run("999999999.1000000000d"));
+  EXPECT_FALSE(Run("9999999999d"));
+  EXPECT_FALSE(Run(".9999999999d"));
 }
 
 TEST_F(ConsumeUnboundConversionTest, Flags) {