diff options
| author | Patrick Palka <ppalka@redhat.com> | 2022-05-02 07:00:48 -0400 |
|---|---|---|
| committer | Patrick Palka <ppalka@redhat.com> | 2022-05-02 07:08:28 -0400 |
| commit | 4a6d7da796e456115bbac92e056123f095a3780c (patch) | |
| tree | c99de910dbf3117ba5f3fc9c830dd007fc0f5777 | |
| parent | 1f27cd15b3fb815b6b586aaad007e58edae71468 (diff) | |
libstdc++: case-sensitivity in hexfloat std::from_chars [PR105441]
The hexfloat parser for binary32/64 added in r12-6645-gcc3bf3404e4b1c
overlooked that the exponent part can also begin with an uppercase 'P'.
PR libstdc++/105441
libstdc++-v3/ChangeLog:
* src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
Also accept 'P' as the start of the exponent.
* testsuite/20_util/from_chars/7.cc: Add corresponding testcase.
(cherry picked from commit 576f975cabb0fd9843de152a2d247d486a967b08)
| -rw-r--r-- | libstdc++-v3/src/c++17/floating_from_chars.cc | 2 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/from_chars/7.cc | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/libstdc++-v3/src/c++17/floating_from_chars.cc b/libstdc++-v3/src/c++17/floating_from_chars.cc index 13de1e346ab..e7f3a58cf18 100644 --- a/libstdc++-v3/src/c++17/floating_from_chars.cc +++ b/libstdc++-v3/src/c++17/floating_from_chars.cc @@ -664,7 +664,7 @@ namespace // Parse the written exponent. int written_exponent = 0; - if (first != last && *first == 'p') + if (first != last && (*first == 'p' || *first == 'P')) { // Tentatively consume the 'p' and try to parse a decimal number. const char* const fallback_first = first; diff --git a/libstdc++-v3/testsuite/20_util/from_chars/7.cc b/libstdc++-v3/testsuite/20_util/from_chars/7.cc index 2a78c7441e2..1aa9b230531 100644 --- a/libstdc++-v3/testsuite/20_util/from_chars/7.cc +++ b/libstdc++-v3/testsuite/20_util/from_chars/7.cc @@ -96,6 +96,7 @@ constexpr testcase testcases[] = { { "1p-1", 4, {}, 0x1p-1 }, { "0", 1, {}, 0.0 }, { "A", 1, {}, 0xA }, + { "1.ABCDEFP+10", 12, {}, 0x1.ABCDEFP+10 }, { "-1", 2, {}, -1.0 }, { "-0", 2, {}, -0.0 }, { "42", 2, {}, 0x42p0 }, |