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| author | Joseph Myers <joseph@codesourcery.com> | 2009-02-21 21:25:39 +0000 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2009-02-21 21:25:39 +0000 |
| commit | 4bb09c26bc590129675100ee0a87f9408b8afab9 (patch) | |
| tree | 7886f1b6dbd2bde455eb82ab0f653f93286218f7 | |
| parent | 8e361f234b4c853d77a8a8146d093b13ce005ce2 (diff) | |
| download | gcc-4bb09c26bc590129675100ee0a87f9408b8afab9.zip gcc-4bb09c26bc590129675100ee0a87f9408b8afab9.tar.gz gcc-4bb09c26bc590129675100ee0a87f9408b8afab9.tar.bz2 | |
lex.c (lex_string): Return a CPP_LESS token for missing '>' in a header name.
libcpp:
* lex.c (lex_string): Return a CPP_LESS token for missing '>' in a
header name.
(_cpp_lex_direct): Handle this.
gcc/testsuite:
* gcc.dg/cpp/include4.c: New test.
From-SVN: r144361
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/include4.c | 14 | ||||
| -rw-r--r-- | libcpp/ChangeLog | 6 | ||||
| -rw-r--r-- | libcpp/lex.c | 15 |
4 files changed, 37 insertions, 2 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 160b9f6..1d2db2e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2009-02-21 Joseph Myers <joseph@codesourcery.com> + + * gcc.dg/cpp/include4.c: New test. + 2008-02-21 Uros Bizjak <ubizjak@gmail.com> PR target/39256 diff --git a/gcc/testsuite/gcc.dg/cpp/include4.c b/gcc/testsuite/gcc.dg/cpp/include4.c new file mode 100644 index 0000000..d5e7fee --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/include4.c @@ -0,0 +1,14 @@ +/* Preprocessing tokens are always formed according to a greedy algorithm, + so "#include <stddef.h" must be interpreted as a sequence of tokens, + of which the "h" then gets macro expanded. Likewise the other + examples. */ + +#define h h> +#include <stddef.h +#undef h + +#define foo stddef.h> +#include <foo + +#include <foo /* +> */ diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog index f84aab3..d86092b 100644 --- a/libcpp/ChangeLog +++ b/libcpp/ChangeLog @@ -1,3 +1,9 @@ +2009-02-21 Joseph Myers <joseph@codesourcery.com> + + * lex.c (lex_string): Return a CPP_LESS token for missing '>' in a + header name. + (_cpp_lex_direct): Handle this. + 2009-02-15 Richard Guenther <rguenther@suse.de> Revert last change. diff --git a/libcpp/lex.c b/libcpp/lex.c index 96d1a99..452e8ea 100644 --- a/libcpp/lex.c +++ b/libcpp/lex.c @@ -613,7 +613,9 @@ create_literal (cpp_reader *pfile, cpp_token *token, const uchar *base, /* Lexes a string, character constant, or angle-bracketed header file name. The stored string contains the spelling, including opening quote and leading any leading 'L', 'u' or 'U'. It returns the type - of the literal, or CPP_OTHER if it was not properly terminated. + of the literal, or CPP_OTHER if it was not properly terminated, or + CPP_LESS for an unterminated header name which must be relexed as + normal tokens. The spelling is NUL-terminated, but it is not guaranteed that this is the first NUL since embedded NULs are preserved. */ @@ -652,6 +654,14 @@ lex_string (cpp_reader *pfile, cpp_token *token, const uchar *base) else if (c == '\n') { cur--; + /* Unmatched quotes always yield undefined behavior, but + greedy lexing means that what appears to be an unterminated + header name may actually be a legitimate sequence of tokens. */ + if (terminator == '>') + { + token->type = CPP_LESS; + return; + } type = CPP_OTHER; break; } @@ -1181,7 +1191,8 @@ _cpp_lex_direct (cpp_reader *pfile) if (pfile->state.angled_headers) { lex_string (pfile, result, buffer->cur - 1); - break; + if (result->type != CPP_LESS) + break; } result->type = CPP_LESS; |