Merge pull request #349 from lightovernight/fix-pirntchar

fix: ensure isprint() receives unsigned char to prevent MSVC debug as…

.github/workflows/pybind11.yml

@@ -24,9 +24,6 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y gcc g++
 
-      - name: Set up CMake
-        uses: jwlawson/actions-setup-cmake@v1.10
-
       - name: Test
         run: |
           cd include/pybind11/tests
@@ -43,9 +40,6 @@ jobs:
       - name: Set up MSVC
         uses: ilammy/msvc-dev-cmd@v1
 
-      - name: Set up CMake
-        uses: jwlawson/actions-setup-cmake@v1.10
-
       - name: Test
         run: |
           cd include\pybind11\tests
@@ -65,9 +59,6 @@ jobs:
           echo 'export PATH="/usr/local/opt/llvm/bin:$PATH"' >> ~/.zshrc
           source ~/.zshrc
 
-      - name: Set up CMake
-        uses: jwlawson/actions-setup-cmake@v1.10
-
       - name: Test
         run: |
           cd include/pybind11/tests

src/common/sstream.c

@@ -103,7 +103,7 @@ void c11_sbuf__write_quoted(c11_sbuf* self, c11_sv sv, char quote) {
                 if(i + u8bytes > sv.size) u8bytes = 0;  // invalid utf8
                 if(u8bytes <= 1) {
                     // not a valid utf8 char, or ascii
-                    if(!isprint(c)) {
+                    if(!isprint((unsigned char)c)) {
                         unsigned char uc = (unsigned char)c;
                         c11_sbuf__write_cstrn(self, "\\x", 2);
                         c11_sbuf__write_char(self, PK_HEX_TABLE[uc >> 4]);

src/interpreter/frame.c

@@ -121,8 +121,11 @@ void Frame__gc_mark(py_Frame* self) {
 
 int Frame__lineno(const py_Frame* self) {
     int ip = self->ip;
-    if(ip < 0) return 0;
-    return c11__getitem(BytecodeEx, &self->co->codes_ex, ip).lineno;
+    if(ip >= 0)
+        return c11__getitem(BytecodeEx, &self->co->codes_ex, ip).lineno;
+    if(!self->is_locals_special)
+        return self->co->start_line;
+    return 0;
 }
 
 int Frame__iblock(const py_Frame* self) {